Interview Questions - Coders Helpline

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1. Computer Network Basics

1.1. Ques. : What is the difference between Network and Computer Network?

1.2. Ques. : What is Networking?

1.3. Ques. : What is Node in a Computer Network?

1.4. Ques. : What is Link in a Computer Network?

1.5. Ques. : What is the difference between internet, intranet and extranet in a computer network?

1.6. Ques. : What are the types of communication mode in a Computer Network?

1.7. Ques. : What are the main factors that affect the performance of a computer network?

1.8. Ques. : What is Bandwidth?

1.9. Ques. : What is Network Operating System(NOS)?

1.10. Ques. : What is the use of RAID in a computer network?

1.11. Ques. : What is Congestion in computer network?

1.12. Ques. : What is Multiplexing in computer network?

1.13. Ques. : What is localhost(or IP address 127.0.0.1) in computer network?

1.14. Ques. : Define Piggybacking?

1.15. Ques. : What is Beaconing?

1.16. Ques. : What is Tracert?

1.17. Ques. : What is Sneakernet?

1.18. Ques. : Explain IEEE regarding a computer network.

1.19. Ques. : Explain Data Encapsulation regarding a computer network?

1.20. Ques. : What is Subnet Mask?

1.21. Ques. : What is CSMA/CD and CSMA/CA?

1.22. Ques. : What is Analog and Digital Data?

1.23. Ques. : What is Analog and Digital Signal?

1.24. Ques. : What is Serial and Parallel data transmission?

1.25. Ques. : What is Synchronous and Asynchronous data transmission?

2. Network Commands

2.1. Ques. : What is the use of ‘netstat’ command in computer network?

2.2. Ques. : What is the use of ‘ping’ command in computer network?

2.3. Ques. : What is the use of ‘ipconfig’ command in computer network?

2.4. Ques. : What is the use of ‘ifconfig’ command in computer network?

3. Networking Devices

3.1. Ques. : Explain Networking Devices, its use and its type in a Computer Network.

3.2. Ques. :What is Repeater and its use in a Computer Network?

3.3. Ques. :What is Amplifier and its use in a Computer Network?

3.4. Ques. :What is Hub and its use in a Computer Network?

3.5. Ques. :What is Switch and its use in a Computer Network?

3.6. Ques. :What is the difference between Hub and Switch in a Computer Network and which one is better?

3.7. Ques. :What is Bridge and its use in a Computer Network?

3.8. Ques. : What is Brouter?

3.9. Ques. :What is NIC Card and its use in a Computer Network?

3.10. Ques. :What is Router and its use in a Computer Network?

3.11. Ques. :What is Gateway and its use in a Computer Network?

3.12. Ques. :What is the difference between Router and Gateway in a Computer Network?

3.13. Ques. :What is Modem and its use in a Computer Network?

3.14. Ques. : What is Default Gateway?

4.1. Ques. : Explain Network Topology.

4.2. Ques. : Explain the importance of network topology.

4.3. Ques. : List the name of Network Topology.

4.4. Ques. : Say one advantage and one disadvantage of each network topology.

4.5. Ques. : What is Mesh topology?

4.6. Ques. : What is Partial Mesh topology?

4.7. Ques. : What is Star topology?

4.8. Ques. : What is Bus topology?

4.9. Ques. : What is Tree topology?

4.10. Ques. : What is Ring topology?

4.11. Ques. : What is Wired and Wireless Network topology in a Computer Network?

4.12. Ques. : Explain LAN topology and WAN topology in a Computer Network?

4.13. Ques. : What is Cellular topology in a Computer Network?

5. Types & Classification of Network

5.1. Ques. : What are the types of Computer Network?

5.2. Ques. : What is the classification of Computer Network?

5.3. Ques. : Differentiate between LAN, MAN and WAN Computer Network?

5.4. Ques. : What is PAN Computer Network?

5.5. Ques. : What is Unicast, Multicast, Broadcast & Anycast network in a computer network?

5.6. Ques. : What is Ethernet network?

5.7. Ques. : What is Hybrid network?

5.8. Ques. : What is Client-Server Architecture/Network?

6. Transmission Medium

6.1. Ques. : What is Transmission/Communication Medium in Computer Network?

6.2. Ques. : Differentiate between STP and UTP cable.

6.3. Ques. : What is Baseband and Broadband data transmission?

6.4. Ques. : Explain 5-4-3 rule.

6.5. Ques. : What is Connector? Name the connector used in different Cable media.

7. OSI Model & Standard

7.1. Ques. : What is ‘Standard’ in a Computer Network?

7.2. Ques. : What is Reference Model and its use in a Computer Network?

7.3. Ques. : What is OSI Reference Model?

7.4. Ques. : List the name of OSI layers?

7.5. Ques. : Explain the main function of each layer of OSI Reference Model.

8.1. Ques. : What is ‘Protocol’ in a Computer Network?

8.2. Ques. : What is TCP/IP Model in a Computer Network?

8.3. Ques. : List the name of layers of TCP/IP Model in a Computer Network?

8.4. Ques. : List important protocols from each layer of TCP/IP Model.

8.5. Ques. : What do you understand about http and https protocol in a Computer Network?

8.6. Ques. : Differentiate between TCP and UDP protocol.

8.7. Ques. : Differentiate between TCP and IP protocol.

8.8. Ques. : Differentiate between ARP and RARP protocol.

8.9. Ques. : Differentiate the meaning of Connection Oriented and Connectionless Services in a computer network.

8.10. Ques. : Differentiate the Connection Oriented and Connectionless protocols in a computer network.

8.11. Ques. : What is PPP protocol?

8.12. Ques. : What is SLIP protocol?

8.13. Ques. : What is FTP protocol?

8.14. Ques. : What is anonymous FTP protocol?

8.15. Ques. : What is DNS Protocol?

8.16. Ques. : What is DHCP Protocol?

8.17. Ques. : What is SNMP & SGMP Protocol?

8.18. Ques. : What is SMTP, POP3 and IAMP Protocol?

8.19. Ques. : What is RIP Protocol?

9. Computer & Network Security

9.1. Ques. : What is Computer Security?

9.2. Ques. : What is Network Security?

9.3. Ques. : What is Firewall?

9.4. Ques. : What is the role of Firewall in Network Security?

9.5. Ques. : What are the types of Firewall?

9.6. Ques. : What is the difference between Firewall and Antivirus?

9.7. Ques. : What is Proxy Server? What is its function in a network security?

9.8. Ques. : What is VPN? How does it provide security to a computer network?

9.9. Ques. : What is Encryption & Decryption in a computer network?

9.10. IP Classes

9.10.1. Ques. : What is Classes of Network?

9.10.2. Ques. : What is IP Address?

9.10.3. Ques. : Define IPv4 and IPv6.

9.10.4. Ques. : What is Flat IP Address?

9.10.5. Ques. : What is Private IP Address?

9.10.6. Ques. : What is Public IP Address?

9.10.7. Ques. : What is Static IP Address?

9.10.8. Ques. : What is Dynamic IP Address?

9.10.9. Ques. : What is MAC/Physical Address?

9.10.10. Ques. : What is Logical Address?

Computer Network Basics

Ques. : What is the difference between Network and Computer Network?

Ques. : What is Networking?

Ques. : What is Node in a Computer Network?

Ques. : What is Link in a Computer Network?

Ques. : What is the difference between internet, intranet and extranet in a computer network?

Ques. : What are the types of communication mode in a Computer Network?

Ques. : What are the main factors that affect the performance of a computer network?

Ques. : What is Bandwidth?

Ques. : What is Network Operating System(NOS)?

Ques. : What is the use of RAID in a computer network?

Ques. : What is Congestion in computer network?

Ques. : What is Multiplexing in computer network?

Ques. : What is localhost(or IP address 127.0.0.1) in computer network?

Ques. : Define Piggybacking?

Ques. : What is Beaconing?

Ques. : What is Tracert?

Ques. : What is Sneakernet?

Ques. : Explain IEEE regarding a computer network.

Ques. : Explain Data Encapsulation regarding a computer network?

Ques. : What is Subnet Mask?

Ques. : What is CSMA/CD and CSMA/CA?

Ques. : What is Analog and Digital Data?

Ques. : What is Analog and Digital Signal?

Ques. : What is Serial and Parallel data transmission?

Ques. : What is Synchronous and Asynchronous data transmission?

Network Commands

Ques. : What is the use of ‘netstat’ command in computer network?

Ques. : What is the use of ‘ping’ command in computer network?

Ques. : What is the use of ‘ipconfig’ command in computer network?

Ques. : What is the use of ‘ifconfig’ command in computer network?

Networking Devices

Ques. : Explain Networking Devices, its use and its type in a Computer Network.

Ques. :What is Repeater and its use in a Computer Network?

Ques. :What is Amplifier and its use in a Computer Network?

Ques. :What is Hub and its use in a Computer Network?

Ques. :What is Switch and its use in a Computer Network?

Ques. :What is the difference between Hub and Switch in a Computer Network and which one is better?

Ques. :What is Bridge and its use in a Computer Network?

Ques. : What is Brouter?

Ques. :What is NIC Card and its use in a Computer Network?

Ques. :What is Router and its use in a Computer Network?

Ques. :What is Gateway and its use in a Computer Network?

Ques. :What is the difference between Router and Gateway in a Computer Network?

Ques. :What is Modem and its use in a Computer Network?

Ques. : What is Default Gateway?

Topology

Ques. : Explain Network Topology.

Ques. : Explain the importance of network topology.

Ques. : List the name of Network Topology.

Ques. : Say one advantage and one disadvantage of each network topology.

Ques. : What is Mesh topology?

Ques. : What is Partial Mesh topology?

Ques. : What is Star topology?

Ques. : What is Bus topology?

Ques. : What is Tree topology?

Ques. : What is Ring topology?

Ques. : What is Wired and Wireless Network topology in a Computer Network?

Ques. : Explain LAN topology and WAN topology in a Computer Network?

Ques. : What is Cellular topology in a Computer Network?

Types & Classification of Network

Ques. : What are the types of Computer Network?

Ques. : What is the classification of Computer Network?

Ques. : Differentiate between LAN, MAN and WAN Computer Network?

Ques. : What is PAN Computer Network?

Ques. : What is Unicast, Multicast, Broadcast & Anycast network in a computer network?

Ques. : What is Ethernet network?

Ques. : What is Hybrid network?

Ques. : What is Client-Server Architecture/Network?

Transmission Medium

Ques. : What is Transmission/Communication Medium in Computer Network?

Ques. : Differentiate between STP and UTP cable.

Ques. : What is Baseband and Broadband data transmission?

Ques. : Explain 5-4-3 rule.

Ques. : What is Connector? Name the connector used in different Cable media.

OSI Model & Standard

Ques. : What is ‘Standard’ in a Computer Network?

Ques. : What is Reference Model and its use in a Computer Network?

Ques. : What is OSI Reference Model?

Ques. : List the name of OSI layers?

Ques. : Explain the main function of each layer of OSI Reference Model.

Protocols

Ques. : What is ‘Protocol’ in a Computer Network?

Ques. : What is TCP/IP Model in a Computer Network?

Ques. : List the name of layers of TCP/IP Model in a Computer Network?

Ques. : List important protocols from each layer of TCP/IP Model.

Ques. : What do you understand about http and https protocol in a Computer Network?

Ques. : Differentiate between TCP and UDP protocol.

Ques. : Differentiate between TCP and IP protocol.

Ques. : Differentiate between ARP and RARP protocol.

Ques. : Differentiate the meaning of Connection Oriented and Connectionless Services in a computer network.

Ques. : Differentiate the Connection Oriented and Connectionless protocols in a computer network.

Ques. : What is PPP protocol?

Ques. : What is SLIP protocol?

Ques. : What is FTP protocol?

Ques. : What is anonymous FTP protocol?

Ques. : What is DNS Protocol?

Ques. : What is DHCP Protocol?

Ques. : What is SNMP & SGMP Protocol?

Ques. : What is SMTP, POP3 and IAMP Protocol?

Ques. : What is RIP Protocol?

Computer & Network Security

Ques. : What is Computer Security?

Ques. : What is Network Security?

Ques. : What is Firewall?

Ques. : What is the role of Firewall in Network Security?

Ques. : What are the types of Firewall?

Ques. : What is the difference between Firewall and Antivirus?

Ques. : What is Proxy Server? What is its function in a network security?

Ques. : What is VPN? How does it provide security to a computer network?

Ques. : What is Encryption & Decryption in a computer network?

IP Classes

Ques. : What is Classes of Network?

Ques. : What is IP Address?

Ques. : Define IPv4 and IPv6.

Ques. : What is Flat IP Address?

Ques. : What is Private IP Address?

Ques. : What is Public IP Address?

Ques. : What is Static IP Address?

Ques. : What is Dynamic IP Address?

Ques. : What is MAC/Physical Address?

Ques. : What is Logical Address?

Categories: Computer Network

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