Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 115
Q1621:
What is the primary disadvantage of message switching?
A. It requires real-time connection
B. It causes high delays due to storage
C. It does not allow routing
D. It uses only wireless communication
Correct Answer:
B
Chapter: 115
Q1622:
Fill in the blank: ______ switching is more efficient for data that can be broken into smaller parts.
A. Message
B. Circuit
C. Packet
D. Analog
Correct Answer:
C
Chapter: 115
Q1623:
Which method is less efficient for real-time communication?
A. Circuit Switching
B. Packet Switching
C. Message Switching
D. All are equally efficient
Correct Answer:
C
Chapter: 115
Q1624:
Which switching technique ensures real-time and continuous communication?
A. Message Switching
B. Circuit Switching
C. Packet Switching
D. Binary Switching
Correct Answer:
B
Chapter: 115
Q1625:
Fill in the blank: ______ switching temporarily holds the entire message before forwarding to the next node.
A. Packet
B. Circuit
C. Message
D. Digital
Correct Answer:
C
Chapter: 115
Q1626:
The taxonomy of switched networks includes all EXCEPT:
A. Message Switching
B. Packet Switching
C. Circuit Switching
D. Bus Switching
Correct Answer:
D
Chapter: 115
Q1627:
Which switching method is best for non-time-sensitive data?
A. Circuit Switching
B. Packet Switching
C. Message Switching
D. Digital Switching
Correct Answer:
C
Chapter: 115
Q1628:
What does packet switching help optimize?
A. Speed of light
B. Data redundancy
C. Network efficiency
D. Color coding
Correct Answer:
C
Chapter: 116
Q1629:
What is a circuit-switched network composed of?
A. Satellites and routers
B. Wireless links and modems
C. A set of switches connected by physical links
D. Computers connected to a server
Correct Answer:
C
Chapter: 116
Q1630:
In a circuit-switched network, how is a connection between two stations established?
A. Using shared paths
B. Through a dedicated path made of one or more links
C. Using packet forwarding
D. Dynamically via routing tables
Correct Answer:
B
Chapter: 116
Q1631:
Each connection in a circuit-switched network uses ______ on each link.
A. multiple paths
B. shared channels
C. one dedicated channel
D. digital routing
Correct Answer:
C
Chapter: 116
Q1632:
Each link in a circuit-switched network can be divided into channels using:
A. FDM or TDM
B. FAT or DAT
C. ATM or DSL
D. PCM or DTM
Correct Answer:
A
Chapter: 116
Q1633:
Fill in the blank: In circuit-switched networks, each link is normally divided into ______ using FDM or TDM.
A. 1 path
B. n channels
C. IP packets
D. segments
Correct Answer:
B
Chapter: 116
Q1634:
How many 4-kHz voice channels can be connected on a link with 8 kHz bandwidth using FDM?
A. 4
B. 2
C. 1
D. 8
Correct Answer:
B
Chapter: 116
Q1635:
In a circuit-switched network for phones, which technique is typically used to divide the link bandwidth?
A. PDM
B. FDM
C. PCM
D. CDM
Correct Answer:
B
Chapter: 116
Q1636:
Which line type is used to connect two remote offices in a circuit-switched network example?
A. Ethernet
B. TCP
C. T-1
D. Wi-Fi
Correct Answer:
C
Chapter: 116
Q1637:
How many outputs are available in the 4×8 switch example given?
A. 4
B. 2
C. 8
D. 6
Correct Answer:
C
Chapter: 116
Q1638:
Fill in the blank: A ______ path is reserved for the duration of the communication in a circuit-switched network.
A. shared
B. random
C. dedicated
D. split
Correct Answer:
C
Chapter: 116
Q1639:
Which of the following is NOT commonly used in circuit-switched network links?
A. TDM
B. FDM
C. TCP
D. Frequency Division
Correct Answer:
C
Chapter: 116
Q1640:
In the example of a voice circuit-switched network, what is the bandwidth of each link?
A. 2 kHz
B. 8 kHz
C. 4 kHz
D. 16 kHz
Correct Answer:
B