Networking

23 free questions with worked answers, and 635 more in the full bank.

Free questions

What device is commonly used to connect multiple computers within a LAN?

Which cable type is most commonly used for Ethernet connections?

What is the purpose of DNS?

Which of the following tools is used to diagnose network connectivity issues?

What does VPN stand for?

What is the primary function of a router?

4 marks · Hard

What protocol is used to send email?

4 marks · Hard

A user reports that they are unable to access the hospital management system due to a firewall blocking the connection. What should you do to resolve this issue?

4 marks · Hard

A junior admin is looking at a packet capture and notices MAC addresses are being used to forward frames. Which OSI layer is responsible for this activity?

While investigating a slow application, you observe TCP window size zero messages in Wireshark. At what layer of the OSI model does this flow control issue reside?

3 marks · Medium

Users report that their web browsers are failing to negotiate TLS encryption with a newly deployed internal server. Which OSI layer is failing to establish this secure connection?

4 marks · Hard

An engineer connects a spectrum analyzer to a coax cable to check for electromagnetic interference. What OSI layer is being analyzed?

A routing loop has caused TTL values to expire, dropping IP packets. In which OSI layer does the TTL field exist?

3 marks · Medium

During a network outage, a technician finds that a fiber optic cable was accidentally severed. Which layer of the OSI model is directly impacted by this physical break?

An application requires persistent connections and checkpointing during a large file transfer so it can resume if interrupted. Which OSI layer provides these dialog control features?

4 marks · Hard

You are troubleshooting an IPsec VPN tunnel where ESP packets are being dropped by an intermediary firewall. Which OSI layer protocols are being blocked?

3 marks · Medium

A user complains that they cannot access a specific internal webpage, receiving an HTTP 500 error. At what OSI layer is this error generated?

A switch receives a frame with a destination MAC address of FF:FF:FF:FF:FF:FF. Which OSI layer is responsible for flooding this frame out all ports?

3 marks · Medium

A small office connects all their computers to a single central switch. What physical topology is in use?

An enterprise connects its 5 branch offices directly to every other branch office using point-to-point links for maximum redundancy. What topology does this represent?

3 marks · Medium

A legacy industrial control system uses a single coaxial cable that loops through each machine on the factory floor. If a break occurs, the entire segment fails. What topology is described?

4 marks · Hard

A campus network consists of several star-topology building networks connected together via a high-speed fiber backbone ring. Which term best describes this overall design?

To save costs, a regional ISP connects its routers in a circle, where each router only links to its two nearest neighbors. What topology is deployed?

3 marks · Medium

More Networking questions (page 2 of 11)

Answers and explanations are in the full bank.