11-04-2017, 02:19 PM
1. Define the network?
A network is a set of devices connected by physical media links. A network is recursively a connection of two or more nodes over a physical link or two or more networks connected by one or more nodes.
2. What is a link?
At the lower level, a network may consist of two or more computers directly connected by some physical medium such as coaxial cable or optical fiber. This physical medium is called Link.
3. What is a node?
A network may consist of two or more computers directly connected by some physical medium such as coaxial cable or optical fiber. This physical medium is called Links and the computer to which it connects is called Nodes.
4. What is a gateway or router?
A node that is connected to two or more networks is commonly referred to as a router or gateway. Usually forward the message from one network to another.
5. What is a point-point link?
If the physical links are limited to a pair of nodes it is said to be a point-point link.
6. What is multiple access?
If physical links are shared by more than two nodes, they are said to be multiple-access.
7. What are the advantages of distributed processing?
to. Security / Encapsulation
second. Distributed database
do. Faster Troubleshooting
re. Security through redundancy
my. Collaborative Processing
8. What are the criteria for an effective and efficient network?
to. Performance
It can be measured in many ways, including transmission time and response time. second. Reliability
It is measured by the frequency of the fault, the time it takes a link to recover from a fault and the robustness of the network.
do. Security
Security issues include data protection against unauthorized access and viruses.
9. Name the factors that affect network performance?
to. Number of users
second. Type of transmission medium
do. Hardware
re. software
10. Name the factors that affect the reliability of the network?
to. Fault frequency
second. Network recovery time after a failure
11. Name the factors that affect network security?
to. Unauthorized access
second. Virus
12. What is the Protocol?
A protocol is a set of rules that govern all aspects of information communication.
