Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 183
Q2781:
Fill in the blank: The process of sending an address online starts from ______.
A. the rightmost byte of the address
B. the leftmost bit of the first byte
C. the rightmost bit of the first byte
D. the middle byte of the address
Correct Answer:
B
Chapter: 183
Q2782:
Which of the following best describes the address 4A:30:10:21:10:1A?
A. Multicast address
B. Unicast address
C. Broadcast address
D. Private IP address
Correct Answer:
B
Chapter: 183
Q2783:
The hexadecimal digit 'F' in binary is:
A. 1110
B. 1111
C. 111
D. 1100
Correct Answer:
B
Chapter: 183
Q2784:
Which part of the MAC address determines the address type (unicast, multicast)?
A. First byte
B. Second digit of the first byte
C. Third byte
D. All digits
Correct Answer:
B
Chapter: 183
Q2785:
What type of Ethernet address is used when a message is to be sent to only one destination?
A. Broadcast
B. Unicast
C. Multicast
D. Anycast
Correct Answer:
B
Chapter: 183
Q2786:
Fill in the blank: A NIC card fits ______ the station and provides connectivity.
A. around
B. below
C. inside
D. near
Correct Answer:
C
Chapter: 184
Q2787:
Which network protocol is described as a broadcast network?
A. Ethernet
B. Wi-Fi
C. Bluetooth
D. ATM
Correct Answer:
A
Chapter: 184
Q2788:
What access method is used by standard Ethernet to control access to the shared medium?
A. CSMA/CA
B. CSMA/CD
C. ALOHA
D. FDMA
Correct Answer:
B
Chapter: 184
Q2789:
The term "1-Persistent" in CSMA/CD refers to:
A. Transmitting randomly
B. Transmitting after a fixed time
C. Transmitting immediately when the channel is idle
D. Transmitting after waiting some time
Correct Answer:
C
Chapter: 184
Q2790:
In Ethernet, what does CSMA/CD stand for?
A. Carrier Sense Medium Allocation/Collision Detection
B. Carrier Sense Multiple Access/Collision Detection
C. Channel Switch Medium Access/Collision Division
D. Control Sequence Mechanism Access/Data
Correct Answer:
C
Chapter: 184
Q2791:
CSMA/CD is essential in Ethernet because the medium is:
A. Unshared
B. Privately switched
C. Shared and can cause collisions
D. Fully duplexed
Correct Answer:
C
Chapter: 184
Q2792:
Which of the following is **not** a part of CSMA/CD?
A. Carrier Sensing
B. Collision Detection
C. Token Passing
D. Backoff Algorithm
Correct Answer:
C
Chapter: 184
Q2793:
Fill in the blank: Ethernet is based on the _______ network principle.
A. circuit
B. switching
C. broadcast
D. point-to-point
Correct Answer:
C
Chapter: 184
Q2794:
In CSMA/CD, when a collision occurs, the station must:
A. Shut down
B. Quit the network
C. Stop transmission and wait for a random time
D. Continue transmitting
Correct Answer:
C
Chapter: 184
Q2795:
Fill in the blank: The main reason for using CSMA/CD in Ethernet is to avoid ______.
A. delay
B. broadcast
C. bandwidth wastage
D. collision
Correct Answer:
D
Chapter: 184
Q2796:
What is the role of the backoff algorithm in CSMA/CD?
A. To increase signal speed
B. To decrease bandwidth
C. To handle errors
D. To manage retransmission timing
Correct Answer:
D
Chapter: 184
Q2797:
Which protocol uses the "listen before talk" principle?
A. CSMA/CD
B. TCP/IP
C. FTP
D. HTTP
Correct Answer:
A
Chapter: 184
Q2798:
Which of the following describes 1-Persistent CSMA best?
A. The device always waits
B. The device transmits immediately when the channel is idle
C. The device uses a timer
D. The device never checks the channel
Correct Answer:
B
Chapter: 184
Q2799:
Which of the following access methods is **not** used in LAN environments?
A. CSMA/CD
B. Token Passing
C. FDMA
D. CSMA/CA
Correct Answer:
C
Chapter: 184
Q2800:
In 1-Persistent CSMA, what happens if the channel is busy?
A. The device waits and retries immediately after it is idle
B. The device stops
C. The device picks a random backoff time
D. The device restarts
Correct Answer:
A