Introduction to Computing MCQs with Answers
Practice important Introduction to Computing MCQs with answers and explanations.
Chapter: 60
Q841:
What are rules governing network communication called?
A. Protocols
B. Standards
C. Algorithms
D. Frameworks
Correct Answer:
A
Chapter: 60
Q842:
What does the CSMA/CD protocol stand for?
A. Carrier Sense, Multiple Access with Collision Detection
B. Carrier Sense, Multiple Access with Collision Avoidance
C. Carrier Sense, Multiple Access with Collision Prevention
D. Carrier Sense, Multiple Access with Collision Management
Correct Answer:
A
Chapter: 60
Q843:
In a bus network, how does CSMA/CD control message transmission?
A. By broadcasting messages to all machines and detecting collisions
B. By encrypting messages sent over the network
C. By limiting the number of machines on the network
D. By routing messages through a central server
Correct Answer:
A
Chapter: 60
Q844:
What happens if two machines transmit simultaneously under CSMA/CD?
A. Both machines detect a clash and pause before retrying
B. One machine will override the other
C. Messages are lost without detection
D. The network crashes
Correct Answer:
B
Chapter: 60
Q845:
Why is CSMA/CD not compatible with wireless star networks?
A. Wireless networks cannot detect transmission collisions due to signal interference
B. Wireless networks have too few machines for CSMA/CD to be effective
C. Wireless networks use a different protocol entirely
D. Wireless networks do not use any protocol for collision detection
Correct Answer:
A
Chapter: 60
Q846:
What is the main difference between CSMA/CD and CSMA/CA?
A. CSMA/CA tries to avoid collisions rather than detecting them
B. CSMA/CA detects collisions and retries immediately
C. CSMA/CA allows unlimited transmissions without restrictions
D. CSMA/CA uses encryption to protect messages
Correct Answer:
A
Chapter: 60
Q847:
What is the hidden terminal problem in wireless networks?
A. A situation where machines cannot detect collisions due to signal interference
B. A problem where machines are too close to each other
C. A situation where the central AP fails to function properly
D. A problem with physical hardware malfunctions
Correct Answer:
A
Chapter: 60
Q848:
How do some WiFi networks solve the hidden terminal problem?
A. By requiring machines to send a request message to the AP before transmitting
B. By limiting the number of machines on the network
C. By using higher frequency bands
D. By encrypting all transmitted messages
Correct Answer:
A
Chapter: 60
Q849:
What does a machine do if it finds the communication channel busy during CSMA/CA?
A. It waits for a randomly determined period before trying again
B. It immediately retries the transmission
C. It abandons the message and does not retry
D. It notifies the central AP of the busy channel
Correct Answer:
A
Chapter: 60
Q850:
When a machine sends a request message to the AP, what is the next step if the AP acknowledges the request?
A. The machine can safely transmit its message
B. Wait for another request from the AP
C. Abandon the message and try later
D. Retry sending the request until it is acknowledged
Correct Answer:
A
Chapter: 60
Q851:
How does CSMA/CA differ from CSMA/CD in handling busy channels?
A. CSMA/CA waits and retries based on the channel status, while CSMA/CD detects and manages collisions
B. CSMA/CA uses encryption, while CSMA/CD does not
C. CSMA/CA allows immediate retries, while CSMA/CD waits
D. CSMA/CA ignores busy channels, while CSMA/CD addresses them directly
Correct Answer:
A
Chapter: 60
Q852:
In CSMA/CA, what is the purpose of waiting before starting transmission?
A. To avoid collisions with machines that have already been waiting
B. To increase transmission speed
C. To ensure messages are encrypted
D. To reduce network traffic
Correct Answer:
A
Chapter: 60
Q853:
What does the acknowledgment of a request message from the AP indicate in a WiFi network?
A. The channel is free, and the machine can transmit its message
B. The channel is busy, and the machine should retry later
C. The AP is malfunctioning
D. The message is not needed
Correct Answer:
A
Chapter: 61
Q854:
What device connects two buses and passes signals back and forth?
A. Repeater
B. Bridge
C. Switch
D. Router
Correct Answer:
A
Chapter: 61
Q855:
How does a bridge differ from a repeater in network connections?
A. A bridge forwards messages based on destination addresses, while a repeater does not
B. Bridge connects multiple networks, repeater connects only two
C. Bridge amplifies signals, repeater forwards signals without amplification
D. Bridge provides routing capabilities, repeater does not
Correct Answer:
A
Chapter: 61
Q856:
What does a switch do in a network?
A. It connects multiple buses and forwards messages only to the appropriate spokes
B. It amplifies signals between two networks
C. It directly connects two networks without considering destination addresses
D. It manages internet-wide addressing and routing
Correct Answer:
A
Chapter: 61
Q857:
Which device connects networks with incompatible characteristics to form an internet?
A. Router
B. Repeater
C. Bridge
D. Switch
Correct Answer:
A
Chapter: 61
Q858:
What is the primary function of a router in an internet?
A. To forward messages between networks while allowing each network to maintain its unique characteristics
B. To amplify signals between two networks
C. To connect multiple networks as spokes on a wheel
D. To pass signals without consideration of destination addresses
Correct Answer:
A
Chapter: 61
Q859:
What does each machine in an internet have in addition to its local address?
A. An internet address
B. A forwarding table
C. A gateway address
D. A router address
Correct Answer:
A
Chapter: 61
Q860:
What is the role of a gateway in a network?
A. To serve as a passageway between the network and the outside world
B. To connect multiple buses and forward messages to appropriate spokes
C. To amplify signals between two networks
D. To provide internet-wide addressing and routing
Correct Answer:
A