Data Communication MCQs | Interview Questions and Answers | Basic Computer Knowledge

1.

The attackers a network of compromised devices known as

   A.) Internet
   B.) Telnet
   C.) Botnet
   D.) D-net

Answer: Option 'C'

Botnet

2.

Which of the following file retrieval methods use hypermedia?

   A.) HTTP
   B.) WAIS
   C.) Veronica
   D.) Archie

Answer: Option 'A'

HTTP

3.

Which of the following is a security protocol designed to provide a wireless LAN with better security and privacy?

   A.) WAP
   B.) WEP
   C.) LDAP
   D.) SNMP

Answer: Option 'A'

WAP

4.

Which of the following TCP/IP protocol is used for transferring files from one machine to another?

   A.) RARP
   B.) FTP
   C.) ARP
   D.) TCP

Answer: Option 'B'

FTP

5.

When the sender and the receiver of an email are on different systems, we need only ______ .

   A.) One MTA
   B.) Two UAs
   C.) Two UAs and one pair of MTAs
   D.) Two UAs and two pairs of MTAs

Answer: Option 'D'

Two UAs and two pairs of MTAs

6.

MAC address is of

   A.) 24 bits
   B.) 36 bits
   C.) 48 bits
   D.) 42 bits

Answer: Option 'C'

​48 bits

7.

The conditional GET mechanism

   A.) Imposes conditions on the objects to be requested
   B.) Limits the number of response from a server
   C.) Helps to keep a cache upto date
   D.) All of the mentioned

Answer: Option 'C'

​Helps to keep a cache upto date

8.

The HTTP request message is sent in ____ part of three-way handshake.

   A.) First
   B.) Second
   C.) Third
   D.) Fourth

Answer: Option 'C'

​Third

9.

The datalink layer of Ethernet consists of _______

   A.) LLC sublayer
   B.) MAC sublayer
   C.) Both (A) & (B)
   D.) Only (B)

Answer: Option 'C'

Both (A) & (B)

10.

What is the term used to describe addresses available on a DHCP server?

   A.) Pools
   B.) Ranges
   C.) Scopes
   D.) Notes

Answer: Option 'C'

Scopes

11.

What can greatly reduce TCP/IP configuration problems?

   A.) WINS Server
   B.) WINS Proxy
   C.) DHCP Server
   D.) PDC

Answer: Option 'C'

DHCP Server

12.

Header of a frame generally contains

   A.) synchronization bytes
   B.) frame identifier
   C.) addresses
   D.) all of the mentioned

Answer: Option 'D'

all of the mentioned

13.

What function does a serial interface perform in data communication?

   A.) Converts serial data into audio signals
   B.) Converts analog signals into digital signals
   C.) Converts parallel data into a stream of bits
   D.) Decodes incoming signals into computer data

Answer: Option 'C'

Converts parallel data into a stream of bits

14.

After you have verified that TCP/IP is installed correctly, what is the next step in verifying the TCP/IP configuration?

   A.) Ping the broadcast address
   B.) Ping the address of the local host
   C.) Ping the Microsoft Web site
   D.) Ping a distant router.

Answer: Option 'B'

Ping the address of the local host

15.

Identify the incorrect statement

   A.) FTP stands for File Transfer Protocol
   B.) FTP sends exactly one file over the data connection
   C.) FTP sends its control information in-band
   D.) FTP uses two parallel TCP connections

Answer: Option 'C'

​FTP sends its control information in-band

16.

You are trying to decide which type of network you will use at your office, and you want the type that will provide communication and avoid collisions on the cable. Which of the following is the best choice?

   A.) Token-Ring
   B.) CSMA/CD
   C.) Ethernet
   D.) CSMA/CA

Answer: Option 'A'

Token-Ring

17.

The number of objects in a Web page which consists of 4 jpeg images and HTML text is ______

   A.) 1
   B.) 3
   C.) 5
   D.) 4

Answer: Option 'C'

5

18.

When a DNS server accepts and uses incorrect information from a host that has no authority giving that information, then it is called

   A.) DNS lookup
   B.) DNS hijacking
   C.) DNS spoofing
   D.) DNS error

Answer: Option 'C'

​DNS spoofing

19.

Eight stations are competing for the use of a shared channel using the 'Adaptive tree Walk Protocol'. If the stations 7 and 8 are suddenly become ready at once, how many bit slots are needed to resolve the contention?

   A.) 7 slots
   B.) 5 slots
   C.) 14 slots
   D.) 10 slots

Answer: Option 'A'

7 slots

20.

What is A2DP (advanced audio distribution profile)?

   A.) a bluetooth profile for streaming audio
   B.) a bluetooth profile for streaming video
   C.) a bluetooth profile for security
   D.) all of the mentioned

Answer: Option 'A'

​a bluetooth profile for streaming audio


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