Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 212
Q3361:
Which technology uses the same ISM band as Bluetooth?
A. Wi-Fi
B. NFC
C. Infrared
D. DSL
Correct Answer:
A
Chapter: 212
Q3362:
Fill in the blank: The bandwidth used by Bluetooth technology is _______.
A. 3.4 GHz
B. 2.4 GHz
C. 5.2 GHz
D. 1.8 GHz
Correct Answer:
B
Chapter: 212
Q3363:
The presence of multiple devices in the 2.4 GHz band can cause _______.
A. speed up
B. data enhancement
C. interference
D. range extension
Correct Answer:
C
Chapter: 212
Q3364:
Which of the following statements is FALSE about Bluetooth?
A. It uses long-range communication
B. It operates in 2.4 GHz
C. It has a built-in radio transmitter
D. It uses several communication layers
Correct Answer:
A
Chapter: 212
Q3365:
Which protocol stack is Bluetooth **not** based on?
A. OSI model
B. TCP/IP stack
C. Custom Bluetooth stack
D. Internet model
Correct Answer:
B
Chapter: 212
Q3366:
Fill in the blank: Bluetooth communication uses a _______ GHz bandwidth.
A. 1.5
B. 2.4
C. 3
D. 4.9
Correct Answer:
B
Chapter: 213
Q3367:
What is the primary role of connecting devices in a network?
A. To store data
B. To secure connections
C. To connect hosts or networks
D. To display websites
Correct Answer:
C
Chapter: 213
Q3368:
Which of the following is NOT a type of connecting device?
A. Hub
B. Switch
C. Router
D. Monitor
Correct Answer:
D
Chapter: 213
Q3369:
Fill in the blank: ________ devices connect hosts to form a network or networks to form an internet.
A. Transmitting
B. Storing
C. Connecting
D. Forwarding
Correct Answer:
C
Chapter: 213
Q3370:
Which of the following types of devices work at the physical layer?
A. Hub
B. Switch
C. Router
D. Firewall
Correct Answer:
A
Chapter: 213
Q3371:
Link-layer switches operate at which layer of the Internet model?
A. Application layer
B. Transport layer
C. Network layer
D. Data link layer
Correct Answer:
D
Chapter: 213
Q3372:
Routers are responsible for forwarding data based on _______.
A. MAC addresses
B. Port numbers
C. IP addresses
D. File size
Correct Answer:
C
Chapter: 213
Q3373:
Fill in the blank: Routers connect _______ together to form an internet.
A. devices
B. subnets
C. servers
D. networks
Correct Answer:
D
Chapter: 213
Q3374:
Which of the following devices is used mainly to reduce network collisions?
A. Router
B. Hub
C. Repeater
D. Switch
Correct Answer:
D
Chapter: 213
Q3375:
Which device only repeats the incoming signal to all ports without filtering?
A. Switch
B. Hub
C. Router
D. Gateway
Correct Answer:
B
Chapter: 213
Q3376:
Fill in the blank: A ______ operates at the physical layer and does not examine data content.
A. Router
B. Switch
C. Hub
D. Gateway
Correct Answer:
C
Chapter: 213
Q3377:
Connecting devices can operate at _______ layers of the Internet model.
A. only transport
B. only network
C. different
D. all
Correct Answer:
D
Chapter: 213
Q3378:
Which device is best for segmenting a network and managing traffic flow efficiently?
A. Router
B. Hub
C. Switch
D. Repeater
Correct Answer:
C
Chapter: 213
Q3379:
Fill in the blank: Hubs, switches, and routers are three _______ of connecting devices.
A. types
B. purposes
C. versions
D. speeds
Correct Answer:
A
Chapter: 213
Q3380:
What is a key limitation of using a hub in a network?
A. High cost
B. Signal loss
C. Limited distance
D. No traffic filtering
Correct Answer:
D