ENetwork Chapter 3

1   
What is the purpose of resource records in DNS?

•     used by the server to resolve names

   
2   
What are two forms of application layer software? (Choose two.)

•     applications
•     services

   
3  

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

•     80

   
4   
What are two characteristics of peer-to-peer networks? (Choose two.)

•     decentralized resources
•     resource sharing without a dedicated server

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   
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.

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

•     FTP

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

•     application

   
15   
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

   
16   
Which email components are used to forward mail between servers? (Choose two.)

•     MTA
•     SMTP

   
17   
What application layer protocol describes the services that are used for file sharing in Microsoft networks?

•     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

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