CCNA Exploration 1 Chapter 3 Exam Answers

1. What is the role of the OSI application layer?

provides segmentation of data

provides encryption and conversion of data

provides the interface between the applications on either end of the network

provides control of all the data flowing between the source and destination devices

 

2. What is the purpose of resource records in DNS?

temporarily holds resolved entries

used by the server to resolve names

sent by the client to during a query

passes authentication information between the server and client

 

3. What are two forms of application layer software? (Choose two.)

applications

dialogs

requests

services

syntax

 

4. A small home network has been installed to interconnect three computers together for gaming and file sharing. What two properties represent this network type? (Choose two.)

User accounts are centralized.

Security is difficult to enforce.

Specialized operating system software is required.

File permissions are controlled by a single computer.

A computer that responds to a file sharing request is functioning as a server.

 

5. What application layer protocol is commonly used to support for file transfers between a client and a server?

HTML

HTTP

FTP

Telnet

 

6. What three protocols operate at the Application layer of the OSI model? (Choose three.)

ARP

DNS

PPP

SMTP

POP

ICMP

 

7
CCNAExploration1Chapter3ExamAnswers thumb CCNA Exploration 1 Chapter 3 Exam Answers 

Refer to the exhibit. What is the destination port for the communication that is represented on line 5?

80

1261

15533

3912

65520

 

8. Which statements are correct concerning the role of the MTA in handling email? (Choose three.)

routes email to the MDA on other servers

receives email from the client’s MUA

receives email via the POP3 protocol

passes email to the MDA for final delivery

uses SMTP to route email between servers

delivers email to clients via the POP3 protocol

 

9. What are two characteristics of peer-to-peer networks? (Choose two.)

scalable

one way data flow

decentralized resources

centralized user accounts

resource sharing without a dedicated server

 

10. Which layer of the OSI model supplies services that allow user to interface with the network?

physical

session

network

presentation

application

transport

 

11. How does the application layer on a server usually process multiple client request for services?

ceases all connections to the service

denies multiple connections to a single daemon

suspends the current connection to allow the new connection

uses support from lower layer functions to distinguish between connections to the service

 

12. Which email components are used to forward mail between servers? (Choose two.)

MDA

IMAP

MTA

POP

SMTP

MUA

 

13. What are three properties of peer-to-peer applications? (Choose three.)

acts as both a client and server within the same communication.

requires centralized account administration.

hybrid mode includes a centralized directory of files.

can be used in client-server networks.

requires a direct physical connection between devices.

centralized authentication is required.

 

14. A network administrator is designing a network for a new branch office of twenty-five users. What are the advantages of using a client-server model? (Choose two.)

centralized administration

does not require specialized software

security is easier to enforce

lower cost implementation

provides a single point of failure

 

15. Which application layer protocols correctly match a corresponding function? (Choose two.)

DNS dynamically allocates IP addresses to hosts

HTTP transfers data from a web server to a client

POP delivers email from the client to the server email server

SMTP supports file sharing

Telnet provides a virtual connection for remote access

 

16. Which two protocols are used to control the transfer of web resources from a web server to a client browser? (Choose two.)

ASP

FTP

HTML

HTTP

HTTPS

IP

 

17. What is the automated service that matches resource names with the required IP address?

HTTP

SSH

FQDN

DNS

Telnet

SMTP

 

18. What application layer protocol describes the services that are used for file sharing in Microsoft networks?

DHCP

DNS

SMB

SMTP

Telnet

 

19. What are two characteristics of clients in data networks? (Choose two.)

use daemons

initiate data exchanges

are repositories of data

may upload data to servers

listen for requests from servers

 

20. As compared to SSH, what is the primary disadvantage of telnet?

not widely available

does not support encryption

consumes more network bandwidth

does not support authentication

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