FREE NJATC Apprenticeship Programs Questions and Answers

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Token-ring networks make connections using what types of cables?

Correct! Wrong!

Token-ring networks make connections using STP (Shielded Twisted Pair) cables. STP cables have an extra layer of shielding that helps to reduce electromagnetic interference and crosstalk, ensuring a more reliable and stable connection. This type of cable is commonly used in token-ring networks to transmit data between devices. Ethernet, Coaxial, and UTP (Unshielded Twisted Pair) cables are not typically used for token-ring networks.

Fiber optic cable can be constructed only using plastic.

Correct! Wrong!

It can also be constructed using glass.

Which is not one of the main types of Ethernet Cabling?

Correct! Wrong!

FTP (Foil Twisted Pair) is not one of the main types of Ethernet cabling. The main types of Ethernet cabling include UTP (Unshielded Twisted Pair), which is the most common type used for Ethernet connections, and RG-58 and RG-11, which are coaxial cables used for Ethernet connections in certain applications. FTP, on the other hand, is a type of cable that combines the characteristics of both coaxial and twisted pair cables, but it is not commonly used for Ethernet connections.

One advantage of fiber optic wire is that it eliminates the problems found in copper wires.

Correct! Wrong!

Fiber optic wire eliminates the problems found in copper wires due to several reasons. Firstly, fiber optic cables are made of glass or plastic, which makes them immune to electromagnetic interference. This ensures that the signal transmitted through the cable is not affected by nearby electrical devices or power lines. Additionally, fiber optic cables have a much higher bandwidth capacity compared to copper wires, allowing for faster data transmission over longer distances. Furthermore, fiber optic cables are also more resistant to environmental factors such as temperature changes, moisture, and corrosion, making them more reliable and durable than copper wires.

This type of address consists of 48 bits and is unique.

Correct! Wrong!

MAC stands for Media Access Control and refers to the unique identifier assigned to a network interface card (NIC) by the manufacturer. It consists of 48 bits and is unique for every NIC in the world. The MAC address is used in Ethernet networks to ensure that data is sent to the correct device. It is different from an IP address, which is used for network routing and can be dynamically assigned or changed.

RG-11 cable is considered the backbone of cable.

Correct! Wrong!

RG-11 cable is considered the backbone of cable because it is a thick, high-performance coaxial cable that is designed to carry signals over long distances with minimal signal loss. It has a larger diameter and a lower attenuation rate compared to other cables, making it suitable for transmitting signals over longer distances. Due to its superior performance, RG-11 cable is commonly used in applications that require high bandwidth and long cable runs, such as in cable TV distribution systems, satellite installations, and high-speed internet connections.

The last six digits of a MAC address represent the NIC serial number.

Correct! Wrong!

The last six digits of a MAC address do indeed represent the NIC serial number. A MAC address is a unique identifier assigned to network interfaces for communications on a network. It consists of six pairs of hexadecimal digits, with the last three pairs typically representing the serial number of the network interface card (NIC). Therefore, the given statement is correct.

What type of cable is used with ubs and switches?

Correct! Wrong!

UTP (Unshielded Twisted Pair) cable is used with USBs and switches. UTP cables are commonly used in Ethernet networks due to their cost-effectiveness and versatility. They consist of four pairs of twisted copper wires, which help to reduce electromagnetic interference. UTP cables are the most widely used type of cable for local area networks (LANs) and are compatible with most networking devices, including USBs and switches.

Reduction of noise and crosstalk is one advantage of twisted pair wires.

Correct! Wrong!

Twisted pair wires have the ability to reduce noise and crosstalk, which are unwanted disturbances or interference that can affect the quality of the transmitted signal. This is achieved by twisting the pairs of wires together, which helps to cancel out the electromagnetic interference from external sources. As a result, twisted pair wires are commonly used in telecommunications and networking applications where maintaining signal integrity is crucial. Therefore, the statement that reduction of noise and crosstalk is one advantage of twisted pair wires is true.

Which layer of the OSI model does the NIC operate in?

Correct! Wrong!

The NIC (Network Interface Card) operates in the Physical Layer of the OSI model. This layer is responsible for the physical transmission of data over the network, including the electrical, mechanical, and functional specifications of the physical medium. The NIC handles tasks such as converting digital data into electrical signals for transmission and vice versa, as well as regulating the flow of data between the computer and the network.

Which of the following acts as an interface between the networked device and physical network connections?

Correct! Wrong!

A NIC (Network Interface Card) acts as an interface between the networked device (such as a computer) and the physical network connections. It is responsible for connecting the device to the network and facilitating communication between the device and other devices on the network. The NIC converts digital data from the device into signals that can be transmitted over the physical network connections, and vice versa, allowing the device to send and receive data over the network.

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