3,123 views
1 votes
1 votes
Which of the following are not true?
I. Only gateway can be used to connect different protocol networks
II. Gateway occur at all layers.
III. Bridge and switch some times occur in network layer also
IV. Repeater occur at both physical layer and data link layer.

A)Only I and IV

B)Only II, III and IV

C)Only III and IV

D)Only I, II and III

2 Answers

Best answer
4 votes
4 votes

Answer should be option C).

Gateway is used to connect different protocol networks and it occurs at all layers.

Repeater occur only at physical layer.(option 4 is false)

Switch can occur at layer 2(Data link) as well as layer 3( Network layer).

Bridge does not understand IP address and cannot occur at Network layer, it is layer 2 device.(which makes option 3 is false).

http://www.comptechdoc.org/independent/networking/guide/netdevices.html

selected by
2 votes
2 votes
  1. Router connects same protocol networks while Gateway connects different protocol networks.(I is true) [Refer: https://www.quora.com/What-is-the-difference-between-a-gateway-and-a-router]
  2. Gateway occur at all layers (II is true)
  3. Bridge is a Regenerator which decides whether a frame can be dropped. (Based on destination physical address only) Switch is a type of bridge such that each node will be in separate collision domain. Layer 3 switch can act in network layer. Since option III says bridge and switch it is False.
  4. Repeater regenerates signal (not an amplifier; not a filter); hence extends the physical length of a LAN. It works only in physical layer. IV is false.

Answer is C ) III and IV are false

Related questions

0 votes
0 votes
1 answer
1
RamaSivaSubrahmanyam asked Oct 17, 2022
265 views
Can we connect LAN and WAN using bridges??What is the problem, i think there is no problem except expansion of broadcast domain..
1 votes
1 votes
1 answer
2
A_i_$_h asked Sep 22, 2017
361 views
Bridges connect two LAn segments of same or different protocol?
6 votes
6 votes
0 answers
3
Kapil asked Oct 19, 2016
721 views
Explain the followīng sentences with an example ?A). "Bridge is used to connect different LAN's in the same network"B). "Router is used to connect different similar netw...