Basic CS [3i Infotech Placement]: Sample Questions 78 - 79 of 243

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Question 78


Write in Short

Short Answer▾

Paging is a memory management function, while multiprogramming is a processor management function, are the two interdependent?


  • Yes, paging and multiprogramming are independent.
  • Multiprogramming requires large memory for many processors, virtual memory and paging provide nearly infinite memory. Paging divides address space into smaller segments stored in secondary storage.
  • Moreover, main memory is limited and multiprogramming necessitates multiple working sets in the RAM. Intelligent memory management may thus improve performance.

Question 79

Basic CS

Describe in Detail


What are different types of networking and internetworking devices?


Difference Types of Networking and Internetworking

4 Types of Networking and Internetworking Devices Are

  1. Repeaters
  2. Bridges
  3. Routers
  4. Gateways


  • Operates only at the physical layer.
  • Increases the length of the network by correcting for the effect of signal attenuation.
  • Receives the signal in the network before it becomes weak, regenerates the original bit pattern and puts the refreshed copy back in to the link.
  • Forwards every frame; it has no filtering capability.


  • Operates in both the physical and logical data link layer.
  • Divides large network into smaller segments.
  • Contains logic allowing the traffic for each segment to be kept separate
  • Essentially a repeaters which relays a frame only on the side of the segment containing the intended recipient.
  • A bridge has a table that maps address to ports.
  • Limits or filters traffic keeping local traffic low.


  • Routes packets based on their logical address.
  • Operates in physical and data link layers.
  • Normally connects LANs and WANs in the internet
  • Has a routing table used for making decision on the route.
  • Routing tables are dynamic and updated using routing protocols.


  • Multi-purpose connection devices.
  • Accepts a packet formatted for one protocol and converts it to a packet formatted for another protocol before forwarding it.
  • Sometimes used to refer to a router.
  • Operates in all seven layers of OSI model.

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