Data Networks ISDN - Electronic Engineering (MCQ) questions & answers

1)   Which type of framing technique/s reduce/s the problem of synchronization of the receiver?

a. Character Count
b. Character Stuffing
c. Bit Stuffing
d. All of the above
Answer  Explanation 

ANSWER: Character Stuffing

Explanation:
No explanation is available for this question!


2)   In Protocol Data Units (PDUs), where do/does the data get/s interchanged?

a. Between peer entities
b. Between entities of neighboring layers
c. Between 'N' & 'N+1' layers
d. All of the above
Answer  Explanation 

ANSWER: Between peer entities

Explanation:
No explanation is available for this question!


3)   Consider the statements given below. Which among them represents the operational step executed in datagram Packet Switched Network?

a. Fixed Path is assigned between nodes from source to destination
b. First Come First Serviced basis is applicable
c. Necessity of an identifier for a connection between source host & destination host
d. Transmission of short messages of one or two packet lengths
Answer  Explanation 

ANSWER: Transmission of short messages of one or two packet lengths

Explanation:
No explanation is available for this question!


4)   The transfer of user messages from node to another by means of store and forward switching network is known as _______

a. jitter
b. scaling
c. hop
d. entity
Answer  Explanation 

ANSWER: hop

Explanation:
No explanation is available for this question!


5)   Which among the following can be adopted as a dedicated path between the source and destination in circuit switching?

a. Physical Wire
b. Radio Link
c. Co-axial Cable
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!


6)   Which among the following utilizes the transmission line upto 85 - 95 %?

a. Voice Traffic
b. Data Traffic
c. Both a and b
d. None of the above
Answer  Explanation 

ANSWER: Voice Traffic

Explanation:
No explanation is available for this question!


7)   In Phase Shift Keying, how many bit/s is/are allowed to be transmitted per shift?

a. 1
b. 2
c. 4
d. 8
Answer  Explanation 

ANSWER: 2

Explanation:
No explanation is available for this question!


8)   If the voice channel is free in PSTN, then what would be the maximum data rate supported by 3.1 kHz bandwidth of voice channel?

a. 2000 bps
b. 4000 bps
c. 6000 bps
d. 8000 bps
Answer  Explanation 

ANSWER: 6000 bps

Explanation:
No explanation is available for this question!


9)   Which among the following is/are supported by LAN?

a. PABX
b. PSTN
c. SBDN
d. All of the above
Answer  Explanation 

ANSWER: PABX

Explanation:
No explanation is available for this question!


10)   Which type of data network supports the interconnection of computers within highly populated area?

a. LAN
b. WAN
c. MAN
d. None of the above
Answer  Explanation 

ANSWER: MAN

Explanation:
No explanation is available for this question!