Networking :: All Aptitude Test ::

1.UDP is called a ________________transport protocol:
A. connectionless, reliable
B. connection-oriented, unreliable
C. connectionless, unreliable
D. connectionless, reliable

2. Although there are several ways to achieve process-to-process communication, the most common is through the __________ paradigm:
A. client-server
B. client-client
C. server-server
D. client-server

3.The local host and the remote host are defined using IP addresses. To define the processes, we need second identifiers called ____________?
A. UDP addresses
B. transport addresses
C. port addresses
D. UDP addresses

4.The ports ranging from 49,152 to 65,535 can be used as temporary or private port numbers. They are called the ________ ports?
A. well-known
B. registered
C. none of the above
D. well-known

5.In the sending computer, UDP receives a data unit from the _______ layer?
A. application
B. transport
C. IP
D. application

6. In the sending computer, UDP sends a data unit to the _______ layer?
A. application
B. transport
C. IP
D. application

7.UDP and TCP are both _______ layer protocols:
A. data link
B. network
C. transport
D. data link

8.Which of the following functions does UDP perform?
A. process-to-process communication
B. host-to-host communication
C. end-to-end reliable data delivery
D. process-to-process communication

9.When the IP layer of a receiving host receives a datagram, _______?
A. delivery is complete
B. a transport layer protocol takes over
C. a header is added
D. delivery is complete

10.UDP needs the _______ address to deliver the user datagram to the correct application process...?
A. port
B. application
C. internet
D. port

11. A port address in UDP is _______bits long.
A. 8
B. 16
C. 32
D. 8

12.Which of the following does UDP guarantee?
A. flow control
B. connection-oriented delivery
C. flow control
D. flow control

13. The source port address on the UDP user datagram header defines _______?
A. the sending computer
B. the receiving computer
C. the process running on the sending computer
D. the sending computer

14.The combination of an IP address and a port number is called a ____________?
A. transport address
B. network address
C. socket address
D. transport address

15.To use the services of UDP, we need ________ socket addresses:
A. four
B. two
C. three
D. four

16. UDP packets have a fixed-size header of _______ bytes:
A. 6
B. 8
C. 40
D. 6

17. UDP packets are encapsulated in __________?
A. an Ethernet frame
B. an TCP segment
C. an IP datagram
D. an Ethernet frame

18. UDP uses ________ to handle outgoing user datagrams from multiple processes on one host?
A. flow control
B. multiplexing
C. demultiplexing
D. flow control

19.UDP uses _______ to handle incoming user datagrams that go to different processes on the same host.
A. flow control
B. multiplexing
C. demultiplexing
D. flow control

20.The value of the window size is determined by _______?
A. the sender
B. the receiver
C. both the sender and receiver
D. the sender

21.______ provides either authentication or encryption, or both, for packets at the IP level.?
A. AH
B. ESP
C. PGP
D. AH

22.One security protocol for the e-mail system is _________.?
A. IPSec
B. SSL
C. PGP
D. IPSec

23.IPSec defines two protocols: _______ and ________.?
A. AH; SSL
B. PGP; ESP
C. AH; ESP
D. AH; SSL

24.______ provides authentication at the IP level.?
A. AH
B. ESP
C. PGP
D. AH

25._____ is the protocol designed to create security associations, both inbound and outbound.?
A. SA
B. CA
C. KDC
D. SA

26.IKE creates SAs for ____?
A. SSL
B. PGP
C. IPSec
D. SSL

27.IKE uses _____?
A. Oakley
B. SKEME
C. ISAKMP
D. Oakley

28. A _______network is used inside an organization.?
A. private
B. public
C. semi-private
D. private

29. An ________ is a private network that uses the Internet model?
A. intranet
B. internet
C. extranet
D. intranet

30.A ______ provides privacy for LANs that must communicate through the global Internet.?
A. VPP
B. VNP
C. VNN
D. VPP


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