What condition occurs on a shared bus network if multiple stations attempt to transmit data frames over the backbone line simultaneously? MCQ with Answer and Explanation

Question

What condition occurs on a shared bus network if multiple stations attempt to transmit data frames over the backbone line simultaneously?

A. Data Collision

B. Automatic loopback routing

C. Signal termination bypass

D. MAC address duplication

Answer: Option A

Solution (By JKSSB Mock Tests)

Data collisions occur when multiple devices transmit signals over a shared electrical medium simultaneously, garbling the data frames.

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What is the main difference between a hub and a switch?

A. Hub forwards data based on IP, switch based on MAC

B. Hub works at layer 3; switch at layer 2

C. Hub is intelligent; switch is not

D. Hub broadcasts to all ports; switch forwards to specific port based on MAC

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Correct Answer: Option D

Explanation:
A hub sends data to all ports, while a switch learns MAC addresses and sends only to the destination port.

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Question #2

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Which of the following is a broadcast address for a network with subnet mask 255.255.255.0 and network IP 192.168.1.0?

A. 192.168.1.1

B. 192.168.1.0

C. 192.168.1.254

D. 192.168.1.255

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Correct Answer: Option D

Explanation:
The broadcast address is the highest address in the subnet, i.e., 192.168.1.255 for a /24 network.

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Question #3

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What is the primary function of a network Default Gateway configuration point on a local client terminal?

A. To translate public domains to internal directory paths.

B. To provide the routing IP path used to send data outside the local network segment.

C. To handle internal loopback software testing.

D. To generate dynamic MAC hardware masks.

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Correct Answer: Option B

Explanation:
The default gateway is the router interface address that a device uses to send traffic destined for networks outside its local subnet.

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