Friday, April 11, 2014

CCNA 1 Chapter 3 -2014

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.)
applications
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?
not widely available
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?
physical
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?
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






CCNA 1 Chapter 3 Answers

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