COMPUTER NETWORK SECURITY QUESTION BANK UNIT-I DATA COMMUNICATION

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1 COMPUTER NETWORK SECURITY QUESTION BANK UNIT-I DATA COMMUNICATION 1. Define protocol. 2. Define transmission medium. 3. What are the basic components of data communication? 4. What is dataflow? 5. List out the types of data flow. 6. Mention the types of connections. 7. Define network. 8. Define topology. 9. Give the types of networks. 10. Differentiate between LAN, WAN and MAN. 11. What is attenuation? 12. What is guided media? 13. What are the advantages of UTP? 14. Mention the disadvantages of UTP. 15. Define unguided media. 16. Define radio waves. 17. What are the networking devices? 18. Differentiate between hub and bridge. 19. Define routers. 20. Define gateways. 1. Explain data flow of data communication with a neat diagram. 2. Explain network topologies with neat diagram. 3. Briefly explain about types of network. 4. Discuss about twisted pair cable in detail. 5. Explain about co-axial cable and fiber optic cable. 6. Describe about networking devices in detail.

2 UNIT-II OSI MODEL AND LAN PROTOCOLS 1. What is OSI model? 2. Define standards. 3. Mention the functions of application layer. 4. In communication networks which system uses the token passing technology? 5. What is PDU? 6. Define gigabit Ethernet. 7. Comparison of 802.3, 802.4, Define FDDI. 9. What are the advantages of FDDI? 10. Give the disadvantages of FDDI. 11. What is switching? 12. Mention the types of switching technique. 13. Define ISDN. 14. What are the ISDN services? 15. Expand the term CSMA/CD. 16. What is CSMA/CD? 1. Explain about OSI reference model in detail. 2. Discuss about token ring and token bus in detail. 3. Explain about Ethernet and its types. 4. Describe about FDDI and its frame formats. 5. Explain about ISDN services and layers. 6. Explain in detail about broadband technology ISDN.

3 UNIT-III TCP/IP SUIT 1. Define TCP. 2. What are the layers present in TCP/IP model? 3. Define UDP. 4. Define sockets. 5. Differentiate between TCP and UDP. 6. List out the network layer protocols. 7. Define IPV6 and IPV4. 8. Define ICMP. 9. Give the types of interior gateway protocols. 10. Define IP addressing. Give an example. 11. Define subnetting. 12. What is supernetting? 13. What is VLSM technique? 14. List out the application layer protocols. 15. What are the two modes in data connection? 16. Define FTP. 17. What is SMTP? 18. Define HTTP. 19. Define DNS. 20. What is the use of POP protocol. 1. Differentiate connection oriented and connectionless services. 2. Briefly explain about TCP and its header format. 3. Explain about network layer protocol, 4. Explain in detail about subnetting and supernetting. 5. Explain about FTP communication. 6. Describe about SMTP, HTTP, POP.

4 UNIT-IV NETWORK SECURITY 1. Define network security. 2. Give the principles of security. 3. Define attacks. 4. What is meant by cryptography? 5. Give any two algorithms used in encryption. 6. Expand the term DES and AES. 7. What is hash function? 8. Define authentication. 9. Define digital signature. 10. Expand the term MIME. 11. What is MIME? 12. What are the security mechanisms in web security? 13. Give some modes of operations in cipher block. 14. Define VPN. 15. Define public key. 16. Define private key. 17. Define IP security and security. 1. What is attack? List the types of attacks. Explain them in detail. 2. Describe DES algorithm in detail. 3. Describe AES algorithm in detail. 4. Explain various cipher block modes of operations in detail. 5. Define hash function and explain its types in detail. 6. Describe digital signature in detail. 7. Explain about message authentication with an example. 8. Briefly explain about IP security and security. 9. Explain about web security in detail. 10. Explain SET,TSL,SSL in detail.

5 UNIT-V APPLICATIONS OF NETWORK SECURITY 1. Define system security. 2. Expand the term virus. 3. Define virus. 4. List out the types of viruses. 5. What is meant by worms? 6. Define Trojan horse. 7. What is SPAM? 8. What is meant by firewalls? 9. Differentiate hardware and software firewalls. 10. List out the types of firewalls. 11. Define packet filter. 12. What is SPI? 13. What are the limitations of firewall? 14. Define intrusion detection. 15. Give the types of intrusion detection. 16. Define honey pots. 17. What is meant by authentication? 18. Define wireless security issues. 19. Mention the features of wireless security issues. 20. What is Eavesdropping? 21. Expand the term WEP. 22. Define WEP. 23. What are the features of WEP? 1. Explain system security in detail. 2. What is firewall? Explain the types of firewalls with neat diagram. 3. Describe about intrusion detection in detail. 4. Briefly explain about wireless security issues. 5. Discuss WLAN detection and Eavesdropping. 6. Explain server authentication and protocols of VPN.

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