Saturday, August 20, 2011

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



2 komentar:

Anonymous said...

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Admin said...

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