Network+ Bus Physical Topology

1. What type of device is used at either end of a bus network?

Terminator

Ohmmeter

Transceiver

Tracker

A terminator is used at either end of a bus network to prevent signal reflections. When a signal reaches the end of the bus, it can bounce back and interfere with other signals, causing data corruption. The terminator absorbs these reflections, ensuring that the signals are properly terminated and preventing any disruptions in the network. Therefore, the correct answer is Terminator.

Explanation

A terminator is used at either end of a bus network to prevent signal reflections. When a signal reaches the end of the bus, it can bounce back and interfere with other signals, causing data corruption. The terminator absorbs these reflections, ensuring that the signals are properly terminated and preventing any disruptions in the network. Therefore, the correct answer is Terminator.

2. How many nodes share a single channel on a bus topoogy?

All connected nodes

One

Two

Four

In a bus topology, all connected nodes share a single communication channel. This means that all nodes on the network are connected to a common communication line, allowing them to send and receive data. Unlike other topologies where nodes have dedicated connections, in a bus topology, all nodes must share the same channel for communication. Therefore, the correct answer is "all connected nodes."

Explanation

In a bus topology, all connected nodes share a single communication channel. This means that all nodes on the network are connected to a common communication line, allowing them to send and receive data. Unlike other topologies where nodes have dedicated connections, in a bus topology, all nodes must share the same channel for communication. Therefore, the correct answer is "all connected nodes."

3. Which type of cable are you most likely to find on networks that use bus topology?

UTP cable

STP cable

Coaxial cable

Fiber-optic cable

In a bus topology network, all devices are connected to a single cable called the backbone. This cable is responsible for transmitting data between devices. Coaxial cable is most commonly used in bus topology networks because it is capable of carrying signals over long distances without degradation. It is also relatively inexpensive and easy to install, making it a popular choice for this type of network. UTP cable and STP cable are more commonly used in star or ring topology networks, while fiber-optic cable is typically used in high-speed or long-distance networks where data transmission needs to be extremely fast and reliable.

Explanation

In a bus topology network, all devices are connected to a single cable called the backbone. This cable is responsible for transmitting data between devices. Coaxial cable is most commonly used in bus topology networks because it is capable of carrying signals over long distances without degradation. It is also relatively inexpensive and easy to install, making it a popular choice for this type of network. UTP cable and STP cable are more commonly used in star or ring topology networks, while fiber-optic cable is typically used in high-speed or long-distance networks where data transmission needs to be extremely fast and reliable.

4. On a bus topology, terminators eliminate the possibility of __________________.

Crosstalk

Noise

Signal bounce

EMI

On a bus topology, terminators eliminate the possibility of signal bounce. Signal bounce occurs when a signal reflects back and forth along the bus, causing distortion and interference. Terminators are resistors placed at each end of the bus to absorb and dissipate these reflected signals, preventing them from bouncing back and causing disruptions in the network.

Explanation

On a bus topology, terminators eliminate the possibility of signal bounce. Signal bounce occurs when a signal reflects back and forth along the bus, causing distortion and interference. Terminators are resistors placed at each end of the bus to absorb and dissipate these reflected signals, preventing them from bouncing back and causing disruptions in the network.

5. What is one advantage of using a network based on the bus topology over a network based on the star of mesh topologies?

Bus topologies are more fault tolerant.

Bus topologies allow faster throughput.

Bus topologies are more secure.

Bus topologies are simpler to install and maintain.

One advantage of using a network based on the bus topology over a network based on the star or mesh topologies is that bus topologies are simpler to install and maintain. In a bus topology, all devices are connected to a single communication line, making it easier to set up and manage the network infrastructure. There is no need for complex wiring or configuration, reducing the installation and maintenance efforts. On the other hand, star and mesh topologies require more cables and devices, increasing the complexity and making them more challenging to install and maintain.

Explanation

One advantage of using a network based on the bus topology over a network based on the star or mesh topologies is that bus topologies are simpler to install and maintain. In a bus topology, all devices are connected to a single communication line, making it easier to set up and manage the network infrastructure. There is no need for complex wiring or configuration, reducing the installation and maintenance efforts. On the other hand, star and mesh topologies require more cables and devices, increasing the complexity and making them more challenging to install and maintain.

6. You are the administrator for a LAN that uses the bus topology to connect to seven workstations. Each workstation runs Windows XP. What would you need to do if you wanted to add a workstation to the network and enable other workstations to read data from the new workstation's hard disk?

Apply shared access to the appropriate folders on the new workstation.

Modify the sharing services parametesr in the domain controller's operating system.

Modify the file sharing properties on each workstation on the network so that each can read from the added workstation.

Add the new workstation's account to the folder-sharing group on the network.

To add a workstation to the network and enable other workstations to read data from its hard disk, you would need to apply shared access to the appropriate folders on the new workstation. This means configuring the folders on the new workstation to be shared with other devices on the network. By doing so, the other workstations will be able to access and read data from the shared folders on the new workstation's hard disk.

Explanation

To add a workstation to the network and enable other workstations to read data from its hard disk, you would need to apply shared access to the appropriate folders on the new workstation. This means configuring the folders on the new workstation to be shared with other devices on the network. By doing so, the other workstations will be able to access and read data from the shared folders on the new workstation's hard disk.

7. What would happen to the entire network if one of the nodes in the bus-wired network failed?

Performance would suffer slightly.

The failed node could not transmit data, but other nodes would be fine.

Data would no longer be transmitted to or from any node.

Errors would be broadcast to every node.

If one of the nodes in a bus-wired network fails, data transmission to and from any node would cease. This is because in a bus topology, all nodes are connected to a single communication line, and if one node fails, it breaks the continuity of the line, causing data to be unable to flow across the network. Other nodes would not be able to transmit or receive data, resulting in a complete halt of network communication.

Explanation

If one of the nodes in a bus-wired network fails, data transmission to and from any node would cease. This is because in a bus topology, all nodes are connected to a single communication line, and if one node fails, it breaks the continuity of the line, causing data to be unable to flow across the network. Other nodes would not be able to transmit or receive data, resulting in a complete halt of network communication.