Which of the following is a key operational drawback of using a basic hardware hub instead of a network switch? MCQ with Answer and Explanation

Which of the following is a key operational drawback of using a basic hardware hub instead of a network switch?
A. Hubs alter the physical MAC addresses of packets.
B. Hubs broadcast all incoming traffic to every connected port, which reduces available bandwidth and increases data collision risks.
C. Hubs cannot interface with Ethernet cabling.
D. Hubs require manual IP allocation steps.
Answer: Option B
Solution (By JKSSB Mock Tests)
Because a hub lacks forwarding logic, it repeats incoming data to all ports, creating a single shared collision domain that reduces performance.

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Practice More Computer Networking Questions

Question #1
Which of the following is an example of a Class C IP address based on the traditional classful addressing scheme?
A. 10.0.0.5
B. 240.0.0.1
C. 192.168.1.50
D. 172.16.254.1

Correct Answer: Option C


Explanation:
Class C IP addresses have a first octet range spanning from 192 to 223, commonly used for small local area networks.

This question belongs to: Computer Computer Networking
Question #2
Which topology design features all client nodes wired directly to a central switch or hub, ensuring that a broken client cable only affects that single node?
A. Linear Topology
B. Bus Topology
C. Ring Topology
D. Star Topology

Correct Answer: Option D


Explanation:
In a star topology, each device connects back to a central switch via an isolated cable run, so a cable break only affects that specific device.

This question belongs to: Computer Computer Networking
Question #3
What layer of the OSI model does a traditional hardware Router operate within to make path-forwarding decisions?
A. Data Link Layer (Layer 2)
B. Physical Layer (Layer 1)
C. Network Layer (Layer 3)
D. Transport Layer (Layer 4)

Correct Answer: Option C


Explanation:
Routers operate at Layer 3 (Network Layer), analyzing logical IP addresses to direct data packets across networks.

This question belongs to: Computer Computer Networking