Computer Networks Multiple Choice Questions (MCQs) cover a wide range of topics related to the fundamental principles, protocols, and technologies that govern the communication and connectivity of computer systems. These questions are designed to test the knowledge and understanding of individuals in the field of computer networking. Below is a description outlining the common themes covered by MCQs in this domain: Network Basics: MCQs may assess the understanding of basic networking concepts such as nodes, links, topology, and communication models. Questions might cover the differences between local area networks (LANs) and wide area networks (WANs), as well as their applications. Protocols and Standards: Questions often focus on network protocols, such as TCP/IP, HTTP, FTP, and their roles in data transmission. Familiarity with networking standards and organizations like the IEEE and the Internet Engineering Task Force (IETF) is commonly tested. Networking Devices: MCQs may inquire about the functionality of networking devices like routers, switches, hubs, and their roles in network infrastructure. Understanding the purpose and operation of devices like modems and gateways may also be examined. IP Addressing and Subnetting: Questions might cover topics related to IP addressing, subnetting, and the differences between IPv4 and IPv6. Subnet masks, network classes, and CIDR notation could be focal points in these questions. Data Link Layer and Switching: Understanding the data link layer and its protocols (e.g., Ethernet) is often tested. Questions may address concepts related to MAC addresses, switching techniques, and VLANs (Virtual Local Area Networks). Routing and Routing Protocols: Questions may assess knowledge of routing algorithms and protocols such as RIP, OSPF, and BGP. Understanding the routing table, routing metrics, and the role of routers in forwarding data is essential. Wireless Networking: Topics related to wireless communication standards (e.g., Wi-Fi), security protocols, and frequency bands may be covered. Questions might address challenges and solutions in wireless networking environments. Network Security: MCQs may focus on security protocols, firewalls, encryption, and authentication mechanisms. Understanding common security threats and countermeasures is typically part of these questions. Network Management and Troubleshooting: Questions may assess knowledge of network management protocols (e.g., SNMP) and troubleshooting techniques. Understanding tools for monitoring, diagnosing, and resolving network issues is crucial. Emerging Technologies: Some MCQs may explore contemporary topics such as cloud computing, virtualization, and the Internet of Things (IoT) in the context of networking.

1. COMPUTER NETWORKING - MCQs
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1. What is a network in the context of computing?
A.A group of interconnected computers
B.A single computer system
C.A software application
D.A type of peripheral device
2. What does LAN stand for in networking?
A.Local Access Network
B.Long Area Network
C.Local Area Network
D.Large Access Node
3. Which networking component is responsible for directing data between different
networks?
A.Router
B.Switch
C.Hub
D.Modem
4. What does the acronym WAN represent in networking?
A.Wide Access Network
B.Wireless Area Network
C.Wide Area Network
D.Web Application Node
5. In the OSI model, which layer is responsible for end-to-end communication and
logical addressing?
A.Network Layer
B.Data Link Layer
C.Transport Layer
D.Physical Layer
6. What is the purpose of the Data Link Layer in the OSI model?
A.Logical addressing
B.Error detection and correction
C.Flow control

2. D.Physical specifications
7. Which protocol is commonly used for assigning IP addresses dynamically in a
network?
A.DNS
B.DHCP
C.ARP
D.ICMP
8. What is the primary purpose of the Transport Layer in the OSI model?
A.Logical addressing
B.End-to-end communication
C.Error detection and correction
D.Reliable data transfer
9. What is a packet-switched network?
A.Data is transferred as a continuous stream
B.Data is divided into packets for transmission
C.Data is transferred in a point-to-point manner
D.Data is transmitted in a circuit-switched manner
10. How many layers does the OSI model have?
A.5
B.6
C.7
D.8
11. What does the acronym DNS stand for in networking?
A.Dynamic Naming Service
B.Domain Name System
C.Data Network Security
D.Digital Network Service
12. Which networking device operates at the Data Link Layer of the OSI model?
A.Router
B.Switch
C.Hub
D.Modem
13. In networking, what is the purpose of a firewall?
A.Control network access
B.Provide wireless connectivity
C.Manage IP address assignments
D.Optimize data transfer

3. 14. What is the function of the Physical Layer in the OSI model?
A.Error detection and correction
B.Logical addressing
C.Bit-level transmission
D.Reliable data transfer
15. Which networking protocol is responsible for the delivery of emails over the
Internet?
A.HTTP
B.SMTP
C.FTP
D.DNS
16. What does the acronym LAN represent in networking?
A.Large Area Network
B.Local Access Node
C.Local Area Network
D.Logical Address Node
17. In networking, what does the term "bandwidth" refer to?
A.Data transfer speed
B.Network security level
C.Maximum device capacity
D.Distance between devices
18. Which networking component connects multiple devices within a local area and
operates at Layer 2 of the OSI model?
A.Router
B.Switch
C.Hub
D.Modem
19. What is the purpose of the Network Layer in the OSI model?
A.Logical addressing
B.End-to-end communication
C.Error detection and correction
D.Reliable data transfer
20. Which networking device operates at the Physical Layer of the OSI model?
A.Router
B.Switch
C.Hub
D.Modem

4. 21. What is the purpose of the application layer in the OSI model?
A.End-to-end communication
B.Presentation of data
C.Logical addressing
D.Interface with user applications
22. What does LAN stand for in networking?
A.Local Access Network
B.Long Area Network
C.Local Area Network
D.Large Access Node
23. Which statement best describes a LAN?
A.Spans a large geographical area
B.Connects devices within a building or campus
C.Connects devices across cities
D.Serves as a global network
24. What is the primary characteristic of a WAN?
A.Limited geographic scope
B.High data transfer speed
C.Connects devices within a city
D.Spans a large geographic area
25. Which network type is most suitable for a single organization's multiple locations
within a city?
A.LAN
B.WAN
C.MAN
D.PAN
26. What does PAN stand for in networking?
A.Public Area Network
B.Personal Area Network
C.Private Access Network
D.Primary Area Network
27. In which scenario would a WAN be commonly used?
A.Connecting devices within a building
B.Connecting devices within a city
C.Connecting devices within a campus
D.Connecting devices across different cities

5. 28. What is the main purpose of a MAN?
A.Connect devices within a building
B.Connect devices within a city
C.Connect devices globally
D.Connect devices within a campus
29. Which network type is suitable for a small group of interconnected computers in
close proximity, such as in a home or office?
A.WAN
B.LAN
C.PAN
D.MAN
30. What is the characteristic feature of a PAN?
A.Spans a large geographical area
B.Connects devices within a city
C.Connects devices within a building
D.Connects devices in close proximity to an individual
31. Which network type is commonly used to connect devices within a single building
or campus?
A.WAN
B.LAN
C.PAN
D.MAN
32. In networking, what does the term "geographical scope" refer to?
A.Speed of data transfer
B.Distance between devices
C.Number of connected devices
D.Network security level
33. Which network type is typically used for connecting devices in a home
environment, such as laptops, smartphones, and smart appliances?
A.LAN
B.WAN
C.PAN
D.MAN
34. What is the primary purpose of a WAN?
A.Connect devices within a building
B.Connect devices within a city
C.Connect devices globally
D.Connect devices within a campus

6. 35. Which network type is characterized by high-speed data transfer and low latency,
making it suitable for applications like online gaming or video conferencing?
A.WAN
B.LAN
C.PAN
D.MAN
36. In which network type is data typically transmitted over long distances using
technologies like leased lines or satellite connections?
A.WAN
B.LAN
C.PAN
D.MAN
37. Which network type is most likely to be used for connecting devices within a
university campus?
A.LAN
B.WAN
C.PAN
D.MAN
38. What is the primary advantage of using a WAN over a LAN?
A.Higher data transfer speed
B.Lower cost of implementation
C.Greater coverage area
D.Simplicity of configuration
39. What is the primary purpose of a PAN?
A.Connect devices within a building
B.Connect devices within a city
C.Connect devices globally
D.Connect devices in close proximity to an individual
40. Which network type is commonly used to connect devices across different cities
or countries?
A.WAN
B.LAN
C.PAN
D.MAN
41. What is the typical speed of data transfer in a PAN?
A.Low

7. B.Moderate
C.High
D.Extremely high
42. In which network topology does each device connect to a central hub or switch?
A.Bus
B.Ring
C.Star
D.Mesh
43. What is the main advantage of a star topology?
A.Easy to implement
B.High data transfer speed
C.Low cost of cabling
D.Improved fault isolation
44. In a bus topology, how are devices connected to the central communication line?
A.Directly
B.Through a central hub
C.In a ring configuration
D.Via a mesh network
45. What happens to the data transmitted in a bus topology if two devices send
signals simultaneously?
A.Collision occurs
B.Data is sent sequentially
C.Network becomes more efficient
D.Data is lost
46. Which network topology uses a token-passing protocol to control data
transmission?
A.Bus
B.Ring
C.Star
D.Mesh
47. What is the primary disadvantage of a bus topology?
A.Difficult to implement
B.Limited scalability
C.High cost of cabling
D.Susceptible to collisions
48. In a ring topology, what happens if one device in the ring fails?
A.All devices fail

8. B.Only the failed device is affected
C.Network continues to function
D.Data transmission becomes faster
49. What is the main advantage of a ring topology?
A.Easy to implement
B.High data transfer speed
C.Low cost of cabling
D.Equal access to the network
50. In a star topology, what happens if the central hub or switch fails?
A.All devices fail
B.Only the failed device is affected
C.Network continues to function
D.Data transmission becomes faster
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