CCNA 3 Final Exam Answers
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A network administrator is adding a new VLAN for testing. The company uses VTP and the VLAN is not directly attached to either of the switches configured as VTP servers. What is the best method to add this VLAN to the network?
Change the switch that has connected hosts in the new VLAN to be in VTP server mode.
Configure a port on the VTP servers for the same VLAN as the new VLAN.
Manually add the VLAN to the VLAN database of the VTP servers.*
Configure interfaces on the switch that has connected hosts in the new VLAN and reboot the switch.
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Which industry-wide specification was developed to decrease the time that is needed to move to the forwarding state by switch ports that are operating in a redundantly switched topology?
VLSM
PVST
802.1Q
RSTP*
VTP
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Refer to the exhibit.
A network administrator is verifying the bridge ID and the status of this switch in the STP election. Which statement is correct based on the command output?
The bridge priority of Switch_2 has been lowered to a predefined value to become the root bridge.*
The bridge priority of Switch_2 has been lowered to a predefined value to become the backup root bridge.
The STP instance on Switch_2 is failing due to no ports being blocked and all switches believing they are the root.
The STP instance on Switch_2 is using the default STP priority and the election is based on Switch_2 MAC address.
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Refer to the exhibit.
Which switching technology would allow data to be transmitted over each access layer switch link and prevent the port from being blocked by spanning tree due to the redundant link?
EtherChannel*
HSRP
PortFast
trunking
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Which three pairs of trunking modes will establish a functional trunk link between two Cisco switches?
(Choose three.)
dynamic desirable – dynamic desirable*
dynamic auto – dynamic auto
dynamic desirable – dynamic auto*
dynamic desirable – trunk*
access – trunk
access – dynamic auto
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Refer to the exhibit.
The configuration shows the commands entered by a network administrator for inter-VLAN routing. However, host PCA cannot communicate with PCB. Which part of the inter-VLAN configuration causes the problem?
trunking
port mode on the two switch FastEthernet ports
VLAN configuration*
router port configuration
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Refer to the exhibit.
What is the role of the SW3 switch?
designated switch
edge switch
root bridge*
enabled bridge
local bridge
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Which routing protocol is able to scale for large networks and utilizes non-backbone areas for expansion?
EIGRP
BGP
OSPF*
RIPv2
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In the Cisco hierarchical design model, which layer is more likely to have a fixed configuration switch than the other layers?
distribution
transport
internet
access*
core
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A network engineer is interested in obtaining specific information relevant to the operation of both distribution and access layer Cisco devices. Which command provides common information relevant to both types of devices?
show ip protocols
show ip interface
show cdp neighbors*
show port-security
show mac-address-table
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A switched network has converged completely. All switches currently have a VTP revision number of 5. A new switch that has been configured as a VTP server is added to the network. The new switch has a VTP revision number of 4. What will occur within the network?
The network will no longer share VLAN database updates.
The newly added switch will automatically switch to VTP client mode.
The VTP databases will remain unchanged in all switches with the exception of the newly added switch.*
All switches in the network will update their VTP database to reflect the VTP database of the new switch.
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Which spanning tree standard was developed by Cisco to provide separate instances of 802.1w per VLAN?
RSTP
802.1D
MSTP
Rapid PVST+*
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What are two advantages of EtherChannel?
(Choose two.)
Configuring the EtherChannel interface provides consistency in the configuration of the physical links.*
Load balancing occurs between links configured as different EtherChannels.
EtherChannel uses upgraded physical links to provide increased bandwidth.
Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection.*
Spanning Tree Protocol ensures redundancy by transitioning failed interfaces in an EtherChannel to a forwarding state.
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When EtherChannel is implemented, multiple physical interfaces are bundled into which type of logical connection?
interface range
loopback
VLAN interface
port channel*
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When a range of ports is being configured for EtherChannel, which mode will configure LACP on a port only if the port receives LACP packets from another device?
active
auto
desirable
passive*
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A new chief information officer (CIO) has requested implementation of a link-state dynamic routing protocol. Which two routing protocols fulfill this requirement?
(Choose two.)
RIPv2
BGP
OSPF*
IS-IS*
EIGRP
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Refer to the exhibit. A network administrator is utilizing RIPv1 in the exhibited network topology. What would the router R2 do with a packet that is originating from the 192.168.4.0/24 network and destined for network 172.16.1.0/24?
The router will forward the packet to R1.
The router will forward the packet to R3.
The router will load balance and forward packets to both R1 and R3.*
The router will drop the packet.
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What best describes the operation of distance vector routing protocols?
They use hop count as their only metric.
They only send out updates when a new network is added.
They send their routing tables to directly connected neighbors.*
They flood the entire network with routing updates.
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Which statement defines the speed of convergence of routing protocols?
The time it takes a router to form a neighbor adjacency.
The time it takes a router to learn about directly connected links..
The time it takes a router to calculate the cost of a link.
The time it takes a router within a network to forward routing information.*
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What is associated with link-state routing protocols?
low processor overhead
poison reverse
routing loops
split horizon
Shortest Path First calculations*
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Which two pieces of information are contained within a link-state packet (LSP)?
(Choose two.)
hop count
bandwidth*
link type*
delay
load
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What is a difference between the routing protocols EIGRP and OSPF?
EIGRP uses hop count as the metric and OSPF uses cost as the metric.
EIGRP is an implementation of EGP whereas OSPF is an implementation of IGP.
EIGRP supports routing different network layer protocols whereas OSPF supports routing only IP-based protocols.*
EIGRP only supports equal-cost load balancing whereas OSPF supports both equal-cost and unequal-cost load balancing.
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What protocol is used by EIGRP for the delivery and receipt of EIGRP packets?
RTP*
TCP
UDP
ICMP
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How is bandwidth to a destination network calculated by EIGRP?
the lowest configured bandwidth of any interface along the route*
the sum of the configured bandwidths of all interfaces along the path
the highest configured bandwidth of any interface along the path
the bandwidth of the ingress interface of the last hop router
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Refer to the exhibit.
A network administrator has attempted to implement a default route from R1 to the ISP and propagate the default route to EIGRP neighbors. Remote connectivity from the EIGRP neighbor routers to the ISP connected to R1 is failing. Based on the output from the exhibit, what is the most likely cause of the problem?
The command default-information originate has not been issued on R1.
There are no EIGRP neighbor relationships on R1.
The ip route command must specify a next-hop IP address instead of an exit interface when creating a default route.
The command redistribute static has not been issued on R1.*
The network statement for the ISP connection has not been issued.
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Refer to the exhibit.
Which statement accurately reflects the configuration of routing on the HQ router?
A static default route was configured on this router.*
A static default route was learned via EIGRP routing updates.
The static default route should be redistributed using the default-information originate command.
The IP address assigned to the GigabitEthernet0/0 interface is 172.16.2.0 255.255.255.0.
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Which command would limit the amount of bandwidth that is used by EIGRP for protocol control traffic to approximately 128 Kb/s on a 1.544 Mb/s link?
ip bandwidth-percent eigrp 100 8*
maximum-paths 8
variance 8
traffic-share balanced
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Which criterion is preferred by the router to choose a router ID?
the IP address of the highest configured loopback interface on the router
the IP address of the highest active interface on the router
the router-id rid command*
the IP address of the highest active OSPF-enabled interface
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What is the effect of entering the network 192.168.10.1 0.0.0.0 area 0 command in router configuration mode?
The interface with the IPv4 address 192.168.10.1 will be a passive interface.
OSPF advertisements will include the network on the interface with the IPv4 address 192.168.10.1.*
This command will have no effect because it uses a quad zero wildcard mask.
OSPF advertisements will include the specific IPv4 address 192.168.10.1.
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Which three requirements are necessary for two OSPFv2 routers to form an adjacency?
(Choose three.)
The two routers must include the inter-router link network in an OSPFv2 network command.*
The OSPFv2 process is enabled on the interface by entering the ospf process area-id command.
The OSPF hello or dead timers on each router must match.*
The OSPFv2 process ID must be the same on each router.
The link interface subnet masks must match.*
The link interface on each router must be configured with a link-local address.
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Which type of OSPF router connects an OSPF area to non-OSPF routing domains?
ABR
ASBR*
DR
backbone router
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Which function is performed by an OSPF ABR?
flooding type 2 LSAs within an area
originating type 5 LSAs into an area
injecting type 3 LSAs into an area*
advertising the router ID of any designated routers within an area
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In which mode is the area area-id range address mask command issued when multiarea OSPF summarization is being configured?
global configuration mode
router configuration mode*
interface configuration mode of area 0 interfaces
interface configuration mode of all participating interfaces
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Refer to the exhibit.
What are three resulting DR and DBR elections for the given topology?
(Choose three.)
R4 is BDR for segment B.
R4 is DR for segment B.
R3 is DR for segment A.*
R2 is DR for segment A.
R3 is BDR for segment B.*
R5 is DR for segment B.*
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Refer to the exhibit.
How did this router learn of the highlighted route in the routing table?
by entering the router configuration mode command default-information originate
by entering the global configuration mode command ip route 0.0.0.0 0.0.0.0 interface-type interface-number
by entering the global configuration mode command ip route 0.0.0.0 0.0.0.0 ip-address
by receiving an update from another OSPF router that is running another routing protocol
by receiving an update from another OSPF router that has the default-information originate command configured*
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Which command can be used to view OSPF adjacencies with neighboring routers along with the transition state?
show ip protocols
show ip ospf neighbor*
show ip ospf interface
show running-config
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Match the description to the EIGRP packet type. (Not all options are used.)
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Match each description to its corresponding LSA type. (Not all options are used.)
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What is the term that is used for the area of a network that is affected when a device or network service experiences problems?
failure domain*
collision domain
broadcast domain
user domain
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What term is used to express the thickness or height of a switch?
rack unit*
port density
domain size
module size
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Which configuration changes will increment the configuration revision number on the VTP server?
configuring trunk links on the VTP server
configuring or changing the VTP password
configuring or changing the VTP domain name
configuring or changing the VTP version number
configuring or deleting a VLAN or creating a VLAN name*
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What are three characteristics of VTP?
(Choose three.)
In the default VTP mode, VLANs can be created and modified on a switch.*
Switches in VTP server mode store VLANs in the vlan.dat database.*
VTP-enabled switches exchange three types of advertisements: summary routes, subnet advertisements, and advertisement requests from transparent bridges.
The switch configuration must be saved and the switch reloaded to reset a configuration revision number.
VTP updates are exchanged across trunk links only.*
Switches in different VTP domains can exchange updates if revision numbers are the same.
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What is the purpose of the vlan.dat file on a switch?
It holds the running configuration.
It holds the saved configuration.
It holds the VLAN database.*
It holds the operating system.
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What eliminates switching loops?
hold-down timers
poison reverse
Spanning Tree Protocol*
Time to Live
VTP
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A small company network has six interconnected Layer 2 switches. Currently all switches are using the default bridge priority value. Which value can be used to configure the bridge priority of one of the switches to ensure that it becomes the root bridge in this design?
1
28672*
32768
34816
61440
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What is the value used to determine which port on a non-root bridge will become a root port in a STP network?
the highest MAC address of all the ports in the switch
the lowest MAC address of all the ports in the switch
the VTP revision number
the path cost*
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Which three STP states were replaced with the RSTP discarding state?
(Choose three.)
listening*
learning
blocking*
disabled*
forwarding
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As the network administrator you have been asked to implement EtherChannel on the corporate network. What does this configuration consist of?
providing redundant links that dynamically block or forward traffic
grouping multiple physical ports to increase bandwidth between two switches*
grouping two devices to share a virtual IP address
providing redundant devices to allow traffic to flow in the event of device failure
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Which command will start the process to bundle two physical interfaces to create an EtherChannel group via LACP?
channel-group 2 mode auto
interface port-channel 2
channel-group 1 mode desirable
interface range GigabitEthernet 0/4 – 5*
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A network administrator configured an EtherChannel link with three interfaces between two switches. What is the result if one of the three interfaces is down?
The EtherChannel fails.
The remaining two interfaces continue to load balance traffic.*
The remaining two interfaces become separate links between the two switches.
One interface becomes an active link for data traffic and the other becomes a backup link.
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When EtherChannel is configured, which mode will force an interface into a port channel without exchanging aggregation protocol packets?
active
auto
on*
desirable
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Refer to the exhibit.
A network administrator is reviewing the configuration of switch S1. Which protocol has been implemented to group multiple physical ports into one logical link?
PAgP*
DTP
LACP
STP
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What is the term used to describe a network topology where the subnets from a major classful network address space are separated from each other by addresses from a different major classful network address?
multihomed network
converged network
discontiguous network*
data network
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What type of packets are sent when there is a change in the EIGRP topology?
hello
triggered bounded update*
acknowledge
reply
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Which three pieces of information does a link-state routing protocol use initially as link-state information for locally connected links?
(Choose three.)
the link router interface IP address and subnet mask*
the type of network link*
the link next-hop IP address
the link bandwidth
the cost of that link*
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What indicates to a link-state router that a neighbor is unreachable?
if the router no longer receives routing updates
if the router no longer receives hello packets*
if the router receives an update with a hop count of 16
if the router receives an LSP with previously learned information
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What are three features of EIGRP?
(Choose three.)
uses the Shortest Path First algorithm
establishes neighbor adjacencies*
uses the Reliable Transport Protocol*
sends full routing table updates periodically
broadcasts updates to all EIGRP routers
supports equal and unequal cost load balancing*
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What capability do protocol-dependent modules provide to the EIGRP routing protocol?
route different Layer 3 protocols*
exchange summary routes between areas
combine routes learned from different protocols into a single routing table
load balance between routing protocols
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Which command should be used to configure EIGRP to only advertise the network that is attached to the gigabit Ethernet 0/1 interface?
network 172.16.23.64 0.0.0.63*
network 172.16.23.0 255.255.255.192
network 172.16.23.64 0.0.0.127
network 172.16.23.0 255.255.255.128
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Which command will configure an IPv6 default static route?
router(config)# ipv6 ::/64 s0/0/0
router(config-rtr)# redistribute static
router(config)# ipv6 route ::/0 s0/0/0*
router(config)# ipv6 unicast-routing
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What routing protocol can be configured to load balance across paths with unequal metrics through the use of the variance command?
EIGRP*
OSPF
OSPFv3
RIPng
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What are two features of a link-state routing protocol? (Choose two.)
Routers send periodic updates only to neighboring routers.
Routers send triggered updates in response to a change.*
Routers create a topology of the network by using information from other routers.*
The database information for each router is obtained from the same source.
Paths are chosen based on the lowest number of hops to the designated router.
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A router is participating in an OSPFv2 domain. What will always happen if the dead interval expires before the router receives a hello packet from an adjacent DROTHER OSPF router?
OSPF will run a new DR/BDR election.
SPF will run and determine which neighbor router is “down”.
A new dead interval timer of 4 times the hello interval will start.
OSPF will remove that neighbor from the router link-state database.*
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In an OSPFv2 configuration, what is the effect of entering the command network 192.168.1.1 0.0.0.0 area 0?
It changes the router ID of the router to 192.168.1.1.
It enables OSPF on all interfaces on the router.
It tells the router which interface to turn on for the OSPF routing process.*
It allows all 192.168.1.0 networks to be advertised.
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What does the cost of an OSPF link indicate?
A higher cost for an OSPF link indicates a faster path to the destination.
Link cost indicates a proportion of the accumulated value of the route to the destination.
Cost equals bandwidth.
A lower cost indicates a better path to the destination than a higher cost does.*
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Which two addresses represent valid destination addresses for an OSPFv3 message? (Choose two.)
FF02::5*
224.0.0.5
FF02::A
FE80::42*
2001:db8:acad:1::1
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What information is contained in OSPF type 3 LSAs?
networks reachable in other areas*
networks learned from other routing protocols
the router ID of the DR to all routers in the area
the router ID of an ASBR and the route to reach it
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Refer to the exhibit.
For the given topology, what are three results of the OSPF DR and BDR elections ?
(Choose three.)
R1 is BDR for segment A.
R2 is DR for segment A.
R3 is DR for segment A.*
R4 is DR for segment B.
R5 is BDR for segment B.*
R3 is DR for segment B.*
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Refer to the exhibit.
In this scenario, Area 40 cannot be connected directly to Area 0. Which OSPF network type must be configured in Area 1 to connect these areas?
point-to-point
virtual link*
point-to-multipoint
nonbroadcast multiaccess
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Refer to the exhibit.
What method can be used to enable an OSPF router to advertise a default route to neighboring OSPF routers?
Use a static route pointing to the ISP and redistribute it.
Use a static route pointing to the ISP and redistribute it.
Use the redistribute static command on R0-A.
Use the default-information originate command on ISP.
Use the default-information originate command on R0-A.*
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Refer to the exhibit.
A network administrator has configured the OSPF timers to the values that are shown in the graphic. What is the result of having those manually configured timers?
The R1 dead timer expires between hello packets from R2.*
R1 automatically adjusts its own timers to match the R2 timers.
The hello timer on R2 expires every ten seconds.
The neighbor adjacency has formed.
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Refer to the exhibit.
A network administrator has configured OSPFv2 on the two Cisco routers as shown. The routers are unable to form a neighbor adjacency. What should be done to fix the problem?
Implement the command no passive-interface Serial0/1.
Implement the command network 192.168.2.4 0.0.0.3 area 0 on router R2.
Implement the command network 192.168.3.0 0.0.0.255 area 0 on router R2.
Change the router-id of router R2 to 2.2.2.2.
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A network administrator has configured an EtherChannel between two switches that are connected via four trunk links. If the physical interface for one of the trunk links changes to a down state, what happens to the EtherChannel?
Spanning Tree Protocol will transition the failed physical interface into forwarding mode.
Spanning Tree Protocol will recalculate the remaining trunk links.
The EtherChannel will transition to a down state.
The EtherChannel will remain functional.*
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Which mode configuration setting would allow formation of an EtherChannel link between switches SW1 and SW2 without sending negotiation traffic?
SW1: on
SW2: on*SW1: desirable
SW2: desirableSW1: auto
SW2: auto
PortFast enabled on both switchesSW1: auto
SW2: auto
trunking enabled on both switchesSW1: passive
SW2: active -
Which two statements are correct about EIGRP acknowledgment packets? (Choose two.)
The packets are used to discover neighbors that are connected on an interface.
The packets are sent as unicast.*
The packets require confirmation.
The packets are unreliable.*
The packets are sent in response to hello packets.
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A set of switches is being connected in a LAN topology. Which STP bridge priority value will make it least likely for the switch to be selected as the root?
61440*
4096
65535
32768
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The graphic shows the following information: Switch S1 (the root bridge) uses a port that is labeled B to connect to switch S3 on a port labeled D. S3 is connected to switch S2 on a port labeled A. S2 uses a port labeled C to connect to S1. S2 is connected also to three PC workstations labeled A, B, and C.
Refer to the exhibit. What are the possible port roles for ports A, B, C, and D in this RSTP-enabled network?
alternate, root, designated, root
designated, alternate, root, root
alternate, designated, root, root*
designated, root, alternate, root
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Refer to the exhibit. What are two results of issuing the displayed commands on S1, S2, and S3? (Choose two.)
S2 can become root bridge if S1 fails.*
S2 can become root bridge if S3 fails.
S1 will automatically adjust the priority to be the lowest*.
S3 can be elected as a secondary bridge.
S1 will automatically adjust the priority to be the highest.
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Which statement describes a characteristic of OSPF external routes?
The cost of a type 1 route is always the external cost, regardless of the interior cost to reach that route.
The difference between type 1 and type 2 is in the way the cost of the route is being calculated.*
A type 2 route is always preferred over a type 1 route for the same destination.
Type 1 and type 2 external routes in IPv4 networks are represented in the routing table by EX1 and EX2, respectively.
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By default, how many equal cost routes to the same destination can be installed in the routing table of a Cisco router?
2
4*
16
32
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An EIGRP router loses the route to a network. Its topology table contains two feasible successors to the same network. What action will the router take?
The best alternative backup route is immediately inserted into the routing table.*
The router will query neighbors for an alternate route.
The DUAL algorithm is recomputed to find an alternate route.
The router uses the default route.
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A network administrator is analyzing first-hop router redundancy protocols. What is a characteristic of VRRPv3?
It allows load balancing between routers.
VRRPv3 is Cisco proprietary.
It supports IPv6 and IPv4 addressing.*
It works together with HSRP.
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What is the function of STP in a scalable network?
It combines multiple switch trunk links to act as one logical link for increased bandwidth.
It protects the edge of the enterprise network from malicious activity.
It disables redundant paths to eliminate Layer 2 loops.*
It decreases the size of the failure domain to contain the impact of failures.
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When should EIGRP automatic summarization be turned off?
when a router has less than five active interfaces
when a router has more than three active interfaces
when a network contains discontiguous network addresses*
when a router has not discovered a neighbor within three minutes
when a network addressing scheme uses VLSM
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Which characteristic would most influence a network design engineer to select a multilayer switch over a Layer 2 switch?
ability to aggregate multiple ports for maximum data throughput
ability to have multiple forwarding paths through the switched network based on VLAN number(s)
ability to provide power to directly-attached devices and the switch itself
ability to build a routing table*
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What are two features of OSPF interarea route summarization? (Choose two.)
Route summarization results in high network traffic and router overhead.
Routes within an area are summarized by the ABR.*
Type 3 and type 5 LSAs are used to propagate summarized routes by default.
ASBRs perform all OSPF summarization.
ABRs advertise the summarized routes into the backbone.*
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Refer to the exhibit. Which two conclusions can be derived from the output? (Choose two.)
There is one feasible successor to network 192.168.1.8/30.*
The network 192.168.10.8/30 can be reached through 192.168.11.1.
The reported distance to network 192.168.1.0/24 is 41024256.
The neighbor 172.16.6.1 meets the feasibility condition to reach the 192.168.1.0/24 network.
Router R1 has two successors to the 172.16.3.0/24 network.*
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What are the only two roles that permit an OSPF router to be configured for summarization? (Choose two.)
designated router
backbone router
internal router
autonomous system boundary router*
area border router*
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A network engineer examining the operation of EIGRP on a router notices that one particular route is in an active state. What can the engineer determine about this route?
Data packets to be sent to the specified network will be forwarded on this route.
The Diffusing Update Algorithm has determined a successor and a feasible successor for this route.
The EIGRP processes are still calculating the administrative distance for this route.
EIGRP query messages are being sent to other routers requesting paths to this network.*
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A router needs to be configured to route within OSPF Area 0. Which two commands are required to accomplish this? (Choose two.)
RouterA(config)# router ospf 0
RouterA(config-router)# network 192.168.2.0 255.255.255.0 0
RouterA(config-router)# network 192.168.2.0 0.0.0.255 area 0*
RouterA(config-router)# network 192.168.2.0 0.0.0.255 0
RouterA(config)# router ospf 1*
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Refer to the exhibit. What are three resulting DR and BDR elections for the given topology? (Choose three.)
R4 is BDR for segment B.*
R1 is DR for segment A.
R5 is DR for segment B.*
R3 is DR for segment B.
R3 is DBR for segment B.
R2 is BDR for segment A.*
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Which statement is true about the states of the IEEE 802.1D Spanning Tree Protocol?
Ports must be blocked before they can be placed in the disabled state.
Ports listen and learn before going into the forwarding state.
Ports are manually configured to be in the forwarding state.
It takes 15 seconds for a port to go from blocking to forwarding.*
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What is one reason to use the ip ospf priority command when the OSPF routing protocol is in use?
to influence the DR/BDR election process*
to streamline and speed up the convergence process
to provide a backdoor for connectivity during the convergence process
to activate the OSPF neighboring process
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A network administrator is configuring EIGRP load balancing with the commands:
Router(config)# router eigrp 1
Router(config-router)# variance 3
Router(config-router)# endWhat is a direct result of entering these commands?
Any feasible successor routes to the same destination network with a metric, equal to or less than 3 times that of the successor, will be installed in the routing table.*
Up to three equal cost routes to the same destination can be installed in the routing table.
No matter whether the metric is equal or unequal, up to three routes to the same destination can be installed in the routing table.
Up to three unequal cost routes to the same destination can be installed in the routing table.
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What are two load-balancing methods in the EtherChannel technology? (Choose two.)
source IP to destination IP*
source MAC to destination MAC*
combination of source MAC and IP to destination MAC and IP
combination of source port and IP to destination port and IP
source port to destination port
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Which statement describes the autonomous system number used in EIGRP configuration on a Cisco router?
It carries the geographical information of the organization.
It identifies the ISP that provides the connection to network of the organization.
It functions as a process ID in the operation of the router.*
It is a globally unique autonomous system number that is assigned by IANA. -
An administrator was troubleshooting a router-on-a-stick topology and concluded that the problem was related to the configuration of VLANs on the router subinterfaces. Which two commands can the administrator use in the router to identify the problem? (Choose two.)
show controllers
show vlan
show running-config*
show ip interface*
show ip protocols
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What is a key distinction between classful and classless routing protocols?
Classful routing protocols do not send subnet mask information in their routing updates.*
Classful routing protocols are better suited for implementation in discontiguous networks.
Classless routing protocols are not scalable.
Classless routing protocols do not allow for route summarization.
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Refer to the exhibit. The network administrator configures both switches as displayed. However, host C is unable to ping host D and host E is unable to ping host F. What action should the administrator take to enable this communication?
Associate hosts A and B with VLAN 10 instead of VLAN 1.
Configure either trunk port in the dynamic desirable mode.*
Include a router in the topology.
Remove the native VLAN from the trunk.
Add the switchport nonegotiate command to the configuration of SW2.
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Which is a characteristic of EtherChannel?
STP will not block redundant EtherChannel bundles between two switches.
STP treats all interfaces in a bundle as a single logical link.*
EtherChannel configuration is applied to each physical port.
EtherChannel uses physical ports that have been upgraded to provide a faster connection.
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The topology displays seven routers with four alternative ways to get from source to destination:
Path cost for R1-R3-R4-R5-R6-R7 = 29
Path cost for R1-R3-R2-R6-R7 = 42
Path cost for R1-R2-R6-R7 = 43
Path cost for R1-R4-R5-R6-R7 = 31The source is the LAN that is connected to R1. The destination is the LAN that is connected to R7.
Refer to the exhibit. A network administrator has configured OFPF in the topology as shown. What is the preferred path to get from the LAN network that is connected to R1 to the LAN network that is connected to R7?
R1-R2-R6-R7
R1-R3-R2-R6-R7
R1-R3-R4-R5-R6-R7*
R1-R4-R5-R6-R7
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Four switches, labeled as SW1, SW2, SW3, and SW4, are interconnected. SW1 interface Gi 1/1 is connected to SW4 interface Gi 1/2. SW1 interface Gi 1/2 is connected to SW3 interface Gi 1/1. SW2 interface Gi 1/1 is connected to SW3 interface Gi 1/2. SW2 interface Gi 1/2 is connected to SW4 interface Gi 1/1. There are four text boxes.
Text box 1 shows the following:
SW1 Priority 32769
MAC Address = 00E0.000B.2222Text box 2 shows the following:
SW2 Priority 32769
MAC Address = 00E0.000C.3333Text box 3 shows the following:
SW3 Priority 32769
MAC Address = 00E0.000A.1111Text box 4 shows the following:
SW4 Priority 32769
MAC Address = 00E0.000D.4444Refer to the exhibit. Which switch will be elected the root bridge and which switch will place a port in blocking mode? (Choose two.)
SW1 will become the root bridge.
SW4 will become the root bridge.
SW2 will become the root bridge.
SW2 will get a port blocked.
SW3 will become the root bridge.*
SW4 will get a port blocked.*
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Which command can be used by an administrator to display a list of interfaces that are enabled for OSPFv3?
show ipv6 protocols*
show ipv6 neighbor
show ipv6 route ospf
show ipv6 ospf
-
What EIGRP packet type is used by EIGRP routers to discover neighbors on directly connected links?
acknowledgment
query
Hello*
update
-
Refer to the exhibit. All the displayed switches are Cisco 2960 switches with the same default priority and operating at the same bandwidth. Which three ports will be STP designated ports? (Choose three.)
fa0/9
fa0/20
fa0/13*
fa0/21*
fa0/10*
fa0/11
-
How is the router ID for an OSPFv3 router determined?
the highest IPv6 address on an active interface
the highest EUI-64 ID on an active interface
the highest IPv4 address on an active interface*
the lowest MAC address on an active interface
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Which step can be taken to ensure that a switch added to the network does not overwrite the VLAN databases on existing switches in the same VTP domain?
Erase the startup configuration and reboot the switch.
Reset the switch VTP revision number to 0.*
Delete any configured VLANs and reboot the switch.
Change the VTP mode to client.
-
A network administrator is planning to add a new switch to the network. What should the network administrator do to ensure the new switch exchanges VTP information with the other switches in the VTP domain?
Configure the correct VTP domain name and password on the new switch.*
Associate all ports of the new switch to a VLAN that is not VLAN 1.
Configure all ports on the new switch to access mode.
Configure the VLANs on the new switch.
-
Refer to the exhibit. A network administrator has configured OSPFv2 on the two Cisco routers as shown. PC1 is unable to communicate with PC2. What should be done to fix the problem?
Add the network 192.168.255.0 0.0.0.3 area 0 command to router R1 and remove the network 192.168.255.1 0.0.0.0 area 0command.*
Add the network 192.168.255.2 0.0.0.0 area 0 command to router R1 and remove the network 192.168.255.1 0.0.0.0 area 0command.
Add the network 192.168.10.0 0.0.0.255 area 0 command to router R1 and remove the network 192.168.10.1 0.0.0.0 area 0command.
Add the passive-interface S0/0 command to router R1.
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When the show spanning-tree vlan 33 command is issued on a switch, three ports are shown in the forwarding state. In which two port roles could these interfaces function while in the forwarding state? (Choose two.)
blocked
alternate
disabled
Designated*
Root*
-
Which two parameters must match on the ports of two switches to create a PAgP EtherChannel between the switches? (Choose two.)
MAC address
VLAN information*
port ID
Speed*
PAgP mode
-
What is the final operational state that will form between an OSPF DR and a DROTHER once the routers reach convergence?
established
loading
two-way
Full*
-
Which command is used to display the bandwidth of an interface on an EIGRP-enabled router?
show ip interface brief
show ip protocols
show interfaces*
show ip route
-
How are externally learned EIGRP routes identified in the routing table?
EX*
*
O1 E
D
-
What does the SPF algorithm consider to be the best path to a network?
The path that includes the fastest single bandwidth link.
The path with the smallest delays.
The path that includes the fastest cumulative bandwidth links.*
The path with the least number of hops.
-
Which protocol does EIGRP use for the transportation of EIGRP packets?
Transmission Control Protocol
User Datagram Protocol
Real-Time Transport Protocol*
Reliable Transport Protocol
-
What is a function of OSPF hello packets?
to ensure database synchronization between routers
to discover neighbors and build adjacencies between them*
to send specifically requested link-state records
to request specific link-state records from neighbor routers
-
Which routing table descriptor is used to identify the OSPF networks advertised by type 1 LSAs?
O*
O IA
O E2
O E1
-
What does an OSPF area contain?
routers whose SPF trees are identical
routers that share the same process ID
routers that have the same link-state information in their LSDBs*
routers that share the same router ID
-
What two values must match between two EIGRP directly connected neighbors to establish and maintain an adjacency? (Choose two.)
autonomous system number*
metric parameters*
hello timers
router ID
Area ID
-
Refer to the exhibit. Switch SW-A is to be used as a temporary replacement for another switch in the VTP Student domain. What two pieces of information are indicated from the exhibited output? (Choose two.)
The other switches in the domain can be running either VTP version 1 or 2.
VLAN configuration changes made on this switch will be sent to other devices in the VTP domain.
VTP will block frame forwarding on at least one redundant trunk port that is configured on this switch.
This switch will update its VLAN configuration when VLAN changes are made on a VTP server in the same domain.*
There is a risk that the switch may cause incorrect VLAN information to be sent through the domain.*
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What are two reasons to install a single 48-port fixed configuration switch, rather than two 24-port fixed configuration switches, in a wiring closet that supports two classrooms? (Choose two.)
more ports available for end devices*
more power provided to each port
higher uplink speeds
reduced power and space requirements*
reduced number of VLANs/broadcast domains
-
What is a characteristic of spanning tree?
It prevents propagation of Layer 2 broadcast frames.
It is enabled by default on Cisco switches.*
It is used to discover information about an adjacent Cisco device.
It has a TTL mechanism that works at Layer 2.
-
Refer to the exhibit. A network administrator would like to implement dynamic routing within a small network environment as shown in the exhibit. Which routing protocol would be a viable solution?
BGP
IGRP
RIPv1
EIGRP*
-
Refer to the exhibit. R1 and R2 are OSPFv3 neighbors. Which address would R1 use as the next hop for packets that are destined for the Internet?
2001:DB8:C5C0:1::2
FF02::5
2001:DB8:ACAD:1::2
FE80::21E:BEFF:FEF4:5538*
-
Refer to the exhibit. What will Router1 do if it receives packets that are destined to network 2001:db8:11:100::/64?
send the packets out interface Serial 0/0/0
drop the packets*
send the packets out interface GigabitEthernet 0/0
forward the packets to the gateway of last resort
-
Match the order in which the link-state routing process occurs on a router. (Not all options are used.)
Each router learns about its own directly connected networks. => Step 1
Each router is responsible for “saying hello” to its neighbors on directly connected networks. => Step 2
Each router builds a Link-State Packet (LSP) containing the state of each directly connected link => Step 3
Each router floods the LSP to all neighbors, who then store all LSPs received in a database => Step 4
Each router uses the database to construct a complete map of the topology and computes the best => Step 5
-
Match the description to the term. (Not all options are used.)
Place the options in the following order:
adjacency database => This is where the details of the neighboring routers can be found.
Shortest Path First => This is the algorithm used by OSPF.
Single-area OSPF => All the routers are in the backbone area.
– not scored –
link-state database => This is where you can find the topology table.
– not scored – -
Match the order of precedence to the process logic that an OSPFv3 network router goes through in choosing a router ID. (Not all options are used.)
The router displays a console message to configure the router ID manually. => priority 4
The router uses the highest configured IPv4 address of an active interface. => priority 3
The router uses the highest configured IPv4 address of a loopback interface. => prority 2
The router uses the explicitly configured router ID if any. => priority 1
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