Basic CS [3i Infotech Placement]: Sample Questions 223 - 224 of 243

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Question 223

Basic CS
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Describe in Detail

Essay▾

How Gateway is different from Router?

Explanation

Different between Gateway and Router
GatewaysRouter
It is either a server with a gateway application or a device connecting a network of computers to another network.An application or device with ports, to which computers and servers connect.
If Network A wants to connect to Network B and vice versa, both networks must have gateways that provide exit and entry points for computers across two networks.Routers are programmed with routing tables to determine the shortest possible path between Computer A and Computer B
Used for user authentication which router cannot provide.Provides routing tables and deciding best path for the data to travel.
Used across more than one networks.Used only on one single network.
It is more costly.It is less costly.

Question 224

Basic CS
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Describe in Detail

Essay▾

What is frame relay, in which layer it comes?

Explanation

Given Frame-Relay Network
  • Frame relay is a packet switching technology.
  • Operates in the data link layer.
  • Connection is used for remote sites inside the same country or across different countries.
  • It is a WAN protocol- operating in physical and data link layer in OSI model.
  • Designed for use across Integrated Services Digital Network interfaces- but also over other network interfaces.
  • Packet-switched networks enable end stations to dynamically share the network medium and the available bandwidth.

Bellow techniques are used in packet-switching technology.

  • Variable-length packets
  • Statistical multiplexing

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