CS610 Midterm Subjective

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Q1. Define Vector-Distance Algorithm?

Answer

Packet switches wait for next update message and they iterate through entries in message. If entry has shortest path to destination, insert source as next hop to destination and record distance as distance from next hop to destination plus distance from this switch to next hop.

Q2. CLASSIFICATION OF NETWORKS

Answer

Computer networks are classified by four factors which are as follow:

1. BY SIZE:
2. BY CONNECTIVITY:
3. BY MEDIUM:
4. BY MOBILITY:

Q3. Define static and dynamic routing?

Answer

Static Routing

Static routing is the simplest form of routing, but it is a manual process.

Dynamic Routing

Dynamic routing protocols are supported by software applications running on the routing device (the router) which dynamically learn network destinations and how to get to them and also advertise those destinations to other routers.

Q4. How many uses of CRC hardware Component?

Answer

CRC uses just two hardware components:

• Shift register
• Exclusive OR ( XOR unit )

Q5. What is 10base T?

Answer

One of several adaptations of the Ethernet (IEEE 802.3) standard for Local Area Networks (LANs). The 10Base-T standard (also called Twisted Pair Ethernet) uses a twisted-pair cable with maximum lengths of 100 Meters.

Q6. What is Multicasting?

Answer

It works like broadcasting however it does not forward frames automatically to the CPU. The interface hardware is programmed in advance to accept certain frames that have multicast address as the destination address.

Q7. Difference between EXPLICIT FRAME TYPE and IMPLICIT FRAME TYPE?

Answer

IMPLICIT FRAME TYPE:

In implicit frame the receiver must infer from frame data.

EXPLICIT FRAME TYPE:

In this type the identifying value is included with frame describes types of included data.