网络面试问题和答案Networking - Interview Questions and Answers.docx

Networking - Interview Questions and Answers1. Define Network?A network is a set of devices connected by physical media links. A network is recursively is a connection of two or more nodes by a physical link or two or more networks connected by one or more nodes.2. What is a Link?At the lowest level, a network can consist of two or more computers directly connected by some physical medium such as coaxial cable or optical fiber. Such a physical medium is called as Link.3. What is a node?A network can consist of two or more computers directly connected by some physical medium such as coaxial cable or optical fiber. Such a physical medium is called as Links and the computer it connects is called as Nodes.4. What is a gateway or Router?A node that is connected to two or more networks is commonly called as router or Gateway. It generally forwards message from one network to another.5. What is point-point link?If the physical links are limited to a pair of nodes it is said to be point-point link.6. What is Multiple Access?If the physical links are shared by more than two nodes, it is said to be Multiple Access.7. What are the advantages of Distributed Processing?a. Security/Encapsulationb. Distributed databasec. Faster Problem solvingd. Security through redundancye. Collaborative Processing8. What are the criteria necessary for an effective and efficient network?a. Performance It can be measured in many ways, including transmit time and response time. b. Reliability It is measured by frequency of failure, the time it takes a link to recover from a failure, and the networks robustness.c. SecuritySecurity issues includes protecting data from unauthorized access and virues.9. Name the factors that affect the performance of the network?a. Number of Usersb. Type of transmission mediumc. Hardwared. Software10. Name the factors that affect the reliability of the network?a. Frequency of failureb. Recovery time of a network after a failure11. Name the factors that affect the s