Network devices ………………… and ………………… are used at physical layer.
2022
Network devices ………………… and ………………… are used at physical layer.
Answer: D. Repeater, Hub — Hub: Essentially a multiport repeater that forwards incoming bit-level signals to all other ports without addressing or frame processing (Layer 1). Why the…
- A.
Gateway, Bridge
- B.
Router, Repeater
- C.
Hub, Switch
- D.
Repeater, Hub
Attempted by 3280 students.
Show answer & explanation
Correct answer: D
Hub: Essentially a multiport repeater that forwards incoming bit-level signals to all other ports without addressing or frame processing (Layer 1).
Why the other devices are not correct: Bridge: Operates at the Data Link layer (Layer 2) and forwards frames based on MAC addresses.
Switch: Operates at the Data Link layer (Layer 2), using MAC addresses to forward frames to the correct port.
Router: Operates at the Network layer (Layer 3) and routes packets between different networks using IP addresses.
Gateway: Typically operates at higher layers (often application layer) performing protocol translation between different network architectures or applications.
Conclusion: The pair Repeater and Hub are the correct Physical Layer devices because they operate on raw signals and bits without frame or address processing.