Data Communication and Networking
1. Which protocol is used for error-free data transfer?
A) TCP B) UDP C) HTTP D) FTPTCP
2. Which network device operates at the Physical Layer?
A) Router B) Switch C) Hub D) RepeaterRepeater
3. What is the purpose of the Transport Layer in the OSI model?
A) Routing B) Error control and flow control C) Addressing D) Segmentation and reassemblySegmentation and reassembly
4. What is the difference between a LAN and a WAN?
A) A LAN is smaller, a WAN is largerB) A LAN is faster, a WAN is slower
C) A LAN is more secure, a WAN is less secure
D) A LAN is wired, a WAN is wireless
A LAN is smaller, a WAN is larger
5. Which protocol is used for remote access to a network?
A) FTP B) Telnet C) SSH D) HTTPTelnet(Note: SSH is a more secure alternative to Telnet)
6. What is the purpose of the Network Layer in the OSI model?
A) Routing B) Error control and flow control C) Addressing D) EncryptionRouting
7. Which network topology is the most fault-tolerant?
A) Bus B) Star C) Ring D) MeshMesh
8. What is the difference between a hub and a switch?
A) A hub is faster, a switch is slowerB) A hub broadcasts data to all ports, a switch only sends data to the intended port
C) A hub operates at the Network Layer, a switch operates at the Data Link Layer
D) A hub is more secure, a switch is less secure
A hub broadcasts data to all ports, a switch only sends data to the intended port
9. Which networking device is used to connect multiple networks together?
A) Switch B) Router C) Hub D) BridgeRouter
10. What is the difference between a protocol and a standard?
A) A protocol is a standard, a standard is a protocolB) A protocol is a set of rules, a standard is a specific implementation
C) A protocol is used for data transfer, a standard is used for device connectivity
D) A protocol is used for device connectivity, a standard is used for data transfer
A protocol is a set of rules, a standard is a specific implementation
11. Which network architecture is based on a client-server model?
A) Peer-to-peer B) Client-server C) Hybrid D) DistributedClient-server
12. What is the purpose of the Session Layer in the OSI model?
A) Establishment and termination of connectionsB) Error control and flow control
C) Addressing
D) Segmentation and reassembly
Establishment and termination of connections
13. Which protocol is used for email communication?
A) HTTP B) FTP C) SMTP D) DNSSMTP
14. What is the difference between a gateway and a router?
A) A gateway is used for LAN connectivity, a router is used for WAN connectivityB) A gateway is used for WAN connectivity, a router is used for LAN connectivity
C) A gateway is used for routing, a router is used for switching
D) A gateway is used for switching, a router is used for routing
A gateway is used for WAN connectivity, a router is used for LAN connectivity
15. Which network topology is the most scalable?
A) Bus B) Star C) Ring D) MeshStar
16. What is the purpose of the Presentation Layer in the OSI model?
A) Data compression and encryptionB) Error control and flow control
C) Addressing D) Segmentation and reassembly
Data compression and encryption
17. What is the primary function of the Data Link Layer in the OSI model?
A) Routing B) Error control and flow control C) Addressing D) EncryptionError control and flow control
18. Which networking device operates at the Data Link Layer?
A) Router B) Switch C) Hub D) BridgeSwitch
19. What is the purpose of the TCP three-way handshake?
A) To establish a connection B) To terminate a connectionC) To ensure data integrity D) To provide flow control
To establish a connection
20. Which protocol is responsible for assigning IP addresses dynamically?
A) DHCP B) DNS C) HTTP D) None of aboveDHCP
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