Past ExamsRwanda ICT preparation

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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?
1 mark · Easy
Which cable type is most commonly used for Ethernet connections?
1 mark · Easy
What is the purpose of DNS?
1 mark · Easy
Which of the following tools is used to diagnose network connectivity issues?
1 mark · Easy
What does VPN stand for?
1 mark · Easy
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?
1 mark · Easy
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?
1 mark · Easy
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?
1 mark · Easy
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?
1 mark · Easy
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?
1 mark · Easy
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?
1 mark · Easy
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 4 of 11)

Answers and explanations are in the full bank.