Cybersecurity Final 2

Which topology connects all devices in a single line?

• Star

• Bus

• Mesh

• Ring

Answer explanation

The bus topology connects all devices in a single line along a central cable, known as the bus. Each device is connected to this cable, allowing data to be transmitted in both directions. This makes 'Bus' the correct answer.

Which topology is most resilient to a single point of failure?

• Star

• Bus

• Mesh

• Ring

Answer explanation

The mesh topology is most resilient to a single point of failure because each device is connected to multiple others. If one connection fails, data can still be routed through other paths, ensuring network reliability.

In a star topology, what happens if the central switch fails?

• The entire network fails

• Only one device disconnects

• Nothing happens; the network keeps running

• All devices work independently

Answer explanation

In a star topology, the central switch is crucial for communication. If it fails, all devices lose connectivity, resulting in the entire network failing. Thus, the correct answer is that the entire network fails.

What layer of the OSI model ensures physical connections between devices?

• Network

• Transport

• Physical

• Data Link

Answer explanation

The Physical layer of the OSI model is responsible for establishing, maintaining, and terminating physical connections between devices. It deals with the hardware aspects of networking, such as cables and switches.

What is the main advantage of a mesh topology?

• It's cheap and easy to implement

• It has no single points of failure

• It uses fewer cables

• It limits device communication

Answer explanation

The main advantage of a mesh topology is that it has no single points of failure. This means if one connection fails, the network can still operate through other connections, enhancing reliability.

Which topology is easiest to troubleshoot?

• Star

• Mesh

• Bus

• Ring

Answer explanation

The star topology is easiest to troubleshoot because each device is connected to a central hub. If one connection fails, it does not affect others, making it simple to identify and fix issues compared to other topologies.

How do logical and physical topologies differ?

• Physical deals with devices; logical deals with IP addresses

• Logical deals with devices; physical deals with cables

• They are identical

• Logical relates only to hubs

Answer explanation

Physical topology refers to the actual layout of devices and cables in a network, while logical topology focuses on how data flows and is addressed, such as through IP addresses. Thus, the correct choice is that physical deals with devices and logical deals with IP addresses.

Which of the following topologies uses a token-passing system?

• Star

• Ring

• Mesh

• Bus

Answer explanation

The Ring topology uses a token-passing system where a token circulates around the network. Only the device holding the token can send data, ensuring orderly communication, unlike Star, Mesh, or Bus topologies.

What purpose does the OSI model serve?

• To create MAC addresses

• To define standards for communication

• To troubleshoot hardware issues

• To assign IP addresses

Answer explanation

The OSI model defines standards for communication between different network devices, ensuring interoperability and guiding the development of networking protocols.

Which of the following does a switch use to make forwarding decisions?

• IP Address

• MAC Address

• Hostname

• Port Number

Answer explanation

A switch uses MAC addresses to make forwarding decisions. It examines the destination MAC address in incoming frames to determine the appropriate port for forwarding the data, unlike IP addresses or hostnames.