CCNA Chapter 3

1.What application layer protocol is commonly used to support for file transfers between a client and a server?
–> FTP

2.What are two forms of application layer software? (Choose two.)
–> Application
–> Services

3.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
–> security is easier to enforce

4.What is the purpose of resource records in DNS?
–> Used by the server to resolve names

5.What is the automated service that matches resource names with the required IP address?
–> DNS

6.What three protocols operate at the Application layer of the OSI model? (Choose three.)
–> DNS
–> SMTP
–> POP

7.What are three properties of peer-to-peer applications? (Choose three.)
–> acts as both a client and server within the same communication
–> hybrid mode includes a centralized directory of files
–> can be used in client-server networks

8.Which application layer protocols correctly match a corresponding function? (Choose two.)
–> HTTP transfers data from a web server to a client
–> Telnet provides a virtual connection for remote access

9.Which email components are used to forward mail between servers? (Choose two.)
–> MTA
–> SMTP

10.As compared to SSH, what is the primary disadvantage of telnet?
–> Does not support encryption

11.Which statements are correct concerning the role of the MTA in handling email? (Choose three.)
–> receives email from the client’s MUA
–> passes email to the MDA for final delivery
–> uses SMTP to route email between servers

12.Which two protocols are used to control the transfer of web resources from a web server to a client browser? (Choose two.)
–> HTTP
–> HTTPS

13.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.)
–> Security is difficult to enforce.
–> A computer that responds to a file sharing request is functioning as a server.

14.Which layer of the OSI model supplies services that allow user to interface with the network?
–> Application

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

–> 80

16.What are two characteristics of peer-to-peer networks? (Choose two.)
–> Decentralized resources
–> Resource sharing without a dedicated server

17.What application layer protocol describes the services that are used for file sharing in Microsoft networks? (Be careful its asking in Microsoft network)
–> SMB

18.What are two characteristics of clients in data networks? (Choose two.)
–> initiate data exchanges

–> may upload data to servers

19.What is the role of the OSI application layer?
–> provides the interface between the applications on either end of the network

20.How does the application layer on a server usually process multiple client request for services?
–> uses support from lower layer functions to distinguish between connections to the service