Computer Networking MCQs
Practice Computer Networking MCQs covering LAN, MAN, WAN, PAN, topology, modem, router, hub, switch and IP address concepts.
Question #51
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What is the purpose of a subnet mask?
Correct Answer: Option A
Explanation:
A subnet mask separates the IP address into network and host bits.
A subnet mask separates the IP address into network and host bits.
This question belongs to:
Computer
Computer Networking
Question #52
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Which of the following is a Class B private IP address range?
Correct Answer: Option A
Explanation:
172.16.0.0/12 is a Class B private range.
172.16.0.0/12 is a Class B private range.
This question belongs to:
Computer
Computer Networking
Question #53
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Which protocol is used to resolve an IP address to a MAC address?
Correct Answer: Option D
Explanation:
ARP (Address Resolution Protocol) maps IP addresses to MAC addresses.
ARP (Address Resolution Protocol) maps IP addresses to MAC addresses.
This question belongs to:
Computer
Computer Networking
Question #54
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What is the effect of a network collision?
Correct Answer: Option A
Explanation:
Collisions corrupt data frames, requiring retransmission and reducing efficiency.
Collisions corrupt data frames, requiring retransmission and reducing efficiency.
This question belongs to:
Computer
Computer Networking
Question #55
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Which OSI layer is responsible for error detection and correction at the data link layer?
Correct Answer: Option D
Explanation:
The data link layer performs error detection (and sometimes correction) using frame check sequences.
The data link layer performs error detection (and sometimes correction) using frame check sequences.
This question belongs to:
Computer
Computer Networking
Question #56
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What does the term broadcast domain mean?
Correct Answer: Option A
Explanation:
A broadcast domain is a logical division where a broadcast frame sent by one device can reach all other devices.
A broadcast domain is a logical division where a broadcast frame sent by one device can reach all other devices.
This question belongs to:
Computer
Computer Networking
Question #57
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Which device creates separate broadcast domains?
Correct Answer: Option C
Explanation:
Routers create separate broadcast domains because they do not forward broadcasts.
Routers create separate broadcast domains because they do not forward broadcasts.
This question belongs to:
Computer
Computer Networking
Question #58
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What is the maximum transmission unit (MTU) for Ethernet?
Correct Answer: Option D
Explanation:
The Ethernet MTU is 1500 bytes for the payload, not including headers.
The Ethernet MTU is 1500 bytes for the payload, not including headers.
This question belongs to:
Computer
Computer Networking
Question #59
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Which IP address is used for limited broadcast within the local network?
Correct Answer: Option C
Explanation:
255.255.255.255 is the limited broadcast address, used to send a packet to all nodes on the local network.
255.255.255.255 is the limited broadcast address, used to send a packet to all nodes on the local network.
This question belongs to:
Computer
Computer Networking
Question #60
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What is the function of a firewall in a network?
Correct Answer: Option D
Explanation:
A firewall filters network traffic based on security rules to protect the network.
A firewall filters network traffic based on security rules to protect the network.
This question belongs to:
Computer
Computer Networking
