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Networking - MCQ Practice Questions

Computer networks MCQs — OSI, TCP/IP, routing & protocols.

100 questions | 100% Free

Q.1Medium

A company wants to convert data formats between different systems. Which OSI layer should handle this?

Q.2Medium

Which of the following is NOT a function of the Application Layer (Layer 7)?

Q.3Medium

In the OSI model, which layers are considered the 'Media Layers'?

Q.4Medium

Which device operates primarily at Layer 3 of the OSI model?

Q.5Medium

TCP/IP model has fewer layers than the OSI model. How many layers does the TCP/IP model have?

Q.6Medium

A packet arrives at a router with a damaged frame header. At which OSI layer should this be detected?

Q.7Medium

Which of the following scenarios requires Layer 7 (Application Layer) involvement?

Q.8Medium

A company experiences intermittent network connectivity issues. When troubleshooting, an administrator discovers that the issue occurs only when data passes through a specific gateway. At which OSI layer(s) should the administrator focus their investigation?

Q.9Medium

During a network audit, it is discovered that HTTP traffic is being intercepted and modified. At which minimum OSI layer would a device need to operate to perform this attack?

Q.10Medium

What is the relationship between the TCP/IP model and the OSI model in terms of functionality?

Q.11Medium

A network administrator needs to implement a solution to prevent unauthorized access to sensitive data transmitted over the network. Which OSI layer would be most appropriate for implementing encryption?

Q.12Medium

In a corporate network, certain applications require guaranteed delivery and error checking, while others prioritize speed. Which Layer 4 protocols would best serve these requirements respectively?

Q.13Medium

A manufacturing facility's IoT devices communicate using raw bit transmission over twisted pair cables. Which OSI layer(s) are being utilized?

Q.14Medium

Which of the following statements correctly describes the role of the Session Layer (Layer 5) in the OSI model?

Q.15Medium

A packet sniffer tool captures data at Layer 2. Which information would be visible in the captured frames?

Q.16Medium

In a scenario where a web server receives requests from multiple clients simultaneously, at which OSI layer would connection management and multiplexing be handled to ensure proper session isolation?

Q.17Medium

An organization implements Quality of Service (QoS) policies for video streaming. At which OSI layer would bandwidth prioritization rules primarily be enforced?

Q.18Medium

A network administrator notices that devices can connect physically but cannot communicate. After checking cables and signals, the issue remains. Which layers should be investigated?

Q.19Medium

When a web browser displays encrypted HTTPS content correctly on the user's screen, which layers have successfully completed their functions in the correct sequence?

Q.20Medium

Which statement correctly describes the relationship between protocols and OSI layers?