CCNA 2 Module 9 Quiz – FHRP Concepts (Answers)

1. What is the purpose of HSRP?

  • It prevents a rogue switch from becoming the STP root.
  • It provides a continuous network connection when a router fails.
  • It enables an access port to immediately transition to the forwarding state.
  • It prevents malicious hosts from connecting to trunk ports.
Explanation: HSRP is a first hop redundancy protocol and allows hosts to use multiple gateways through the use of a single virtual router.

2. Which nonproprietary protocol provides router redundancy for a group of routers which support IPv4 LANs?

  • SLB
  • HSRP
  • VRRPv2
  • GLBP
Explanation: The only nonproprietary FHRP used for router redundancy listed in the options is VRRPv2. HSRP and GLBP are both Cisco proprietary FHRPs. IOS SLB is a Cisco-based solution used to load balance traffic across multiple servers.

3. A network administrator is analyzing first-hop router redundancy protocols. What is a characteristic of VRRPv3?

  • It works together with HSRP.
  • It allows load balancing between routers.
  • VRRPv3 is Cisco proprietary.
  • It supports IPv6 and IPv4 addressing.
Explanation: VRRPv3 is a non-proprietary, first-hop router redundancy protocol. It provides features for both IPv4 and IPv6 addressing. HSRP and GLBP are both Cisco-proprietary protocols. GLBP provides load balancing between a group of redundant routers.

4. What is a potential disadvantage when implementing HSRP as compared to GLBP?

  • HSRP provides default gateway failover only when the active router fails.
  • HSRP does not function in a multivendor environment.
  • HSRP does not provide load balancing with multiple active routers.
  • HSRP does not have the capability to support IPv6 addresses.
Explanation: HSRP is a first-hop redundancy protocol that can utilize a group of routers, where a single router is acting as the default gateway and all other HSRP routers will maintain a backup status. GLBP supports load balancing, where multiple active routers can share the traffic load at a single time. Both HSRP and GLBP are Cisco proprietary. HSRP provides default gateway failover when pre-set conditions are met or when the active router fails, and HSRP can support IPv6 addressing.

5. A network engineer is configuring a LAN with a redundant first hop to make better use of the available network resources. Which protocol should the engineer implement?

  • HSRP
  • GLBP
  • FHRP
  • VRRP
Explanation: Gateway Load Balancing Protocol (GLBP) provides load sharing between a group of redundant routers while also protecting data traffic from a failed router or circuit.

6. When first hop redundancy protocols are used, which two items will be shared by a set of routers that are presenting the illusion of being a single router? (Choose two.)

  • IP address
  • BID
  • hostname
  • MAC address
  • static route
Explanation: In order for a set of routers to present the illusion of being a single router, they must share both an IP address and MAC address. A static route, BID, or hostname does not have to be shared in this context.

7. In FHRP terminology, what represents a set of routers that present the illusion of a single router to hosts?

  • virtual router
  • default gateway
  • forwarding router
  • standby router
Explanation: In FHRP multiple routers are configured to work together to present to hosts a single gateway router. This single gateway router is a virtual router which has a virtual IP address that is used by hosts as a default gateway.

8. A user needs to add redundancy to the routers in a company. What are the three options the user can use? (Choose three.)

  • HSRP
  • VRRP
  • RAID
  • STP
  • GLBP
Explanation: Three protocols that provide default gateway redundancy include VRRP, GLBP, and HSRP.

9. Which two protocols provide gateway redundancy at Layer 3? (Choose two.)

  • HSRP
  • PVST
  • STP
  • VRRP
  • RSTP
Explanation: HSRP (Hot Standby Routing Protocol) and VRRP (Virtual Router Redundancy Protocol) are both Layer 3 redundancy protocols. Both protocols allow multiple physical routers to act as a single virtual gateway router for hosts.

10. A network administrator is overseeing the implementation of first hop redundancy protocols. Which two protocols are Cisco proprietary? (Choose two.)

  • IRDP
  • GLBP
  • VRRP
  • VRRPv2
  • HSRP
Explanation: The first hop redundancy protocols HSRP and GLBP are Cisco proprietary and will not function in a multivendor environment.

11. Which statement describes a characteristic of GLBP?

  • It provides automatic rerouting if any router in the group fails.
  • It does not provide support for IPv6.
  • It provides multiple virtual IP addresses and multiple virtual MAC addresses.
  • It provides load balancing for a maximum of four gateways.
Explanation: GLBP provides support for IPv6. It provides one virtual IP address and multiple virtual MAC addresses, and there is no such limit of four gateways to provide load balancing.

12. A network administrator is analyzing the features that are supported by different first-hop router redundancy protocols. Which statement is a feature that is associated with GLBP?

  • GLBP allows load balancing between routers.
  • It is nonproprietary.
  • It uses a virtual router master.
  • It works together with VRRP.
Explanation: The GLBP first-hop router redundancy protocol is Ciscoproprietary and supports load balancing between a group of redundant routers. VRRPv2 and VRRPv3 are nonproprietary protocols and use a virtual router master.

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