Basic CS-Networks [3i Infotech Placement]: Sample Questions 81 - 82 of 90
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Question 81
Explanation
- NETBIOS:
- Programming interface allowing I/O requests to be sent to and received from a remote computer.
- Hides the networking hardware from applications.
- Supports small to medium networks providing transport and network layer support.
- Fast and small and works well for the DOS operating system.
- System wide methods of resolving NETBIOS names to IP address are:
- b-node - Broadcast node
- p-node - Point-to-point node queries an NBNS name server to resolve addresses.
- m-node - First uses broadcasts, then falls back to querying an NBNS name server.
- h-node - The system first attempts to query an NBNS name server, then falls back to broadcasts if the name server fails.
- NETBEUI:
- NETBEUI is NETBIOS extended user interface.
- A transport protocol designed by Microsoft and IBM for small subnets responsible for data transport.
- Handles all the frame formatting not handled by NETBIOS.
Question 82
Explanation
Gateways | Router |
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. |