Question 1

Wide-area networks have a large capacity, and they typically use a single communications channel.

Accepted Answer

Wide-area networks typically use multiple communications channels due to their large geographic coverage, which allows for better bandwidth allocation and increased reliability.

Question 2

Digital signals have two parameters: frequency and amplitude.

Accepted Answer

Digital signals have two parameters: voltage level and time. Frequency and amplitude are parameters of analog signals.

Question 3

Systems that use digital subscriber lines (DSL)do not require modems.

Accepted Answer

DSL systems still require a small modem to convert the DSL signal to Ethernet, which can be used by devices such as computers and routers.

Question 4

The Internet is a wide area network.

Accepted Answer

The Internet is a global network of interconnected computer networks that use standardized communication protocols. As a result, it is considered a wide area network (WAN).

Question 5

Peer-to-peer processing means each computer acts as both a client and a server.

Accepted Answer

Peer-to-peer processing is a distributed computing model in which each computer in the network acts both as a server and a client for other computers in the network. This allows for decentralized and collaborative processing of data and resources.

Question 6

Cable media use wires or cables to transmit data and information.

Accepted Answer

Cable media use wires or cables to transmit data and information.

Question 7

Ethernet is a common LAN protocol.

Accepted Answer

Ethernet is a widely used LAN protocol that defines the communication standards for wired local networks.

Question 8

The U.S.public telephone system was designed as an analog network to carry voice signals.

Accepted Answer

The U.S.public telephone system was originally designed as an analog network to carry voice signals. However, with the advent of digital technology, the network has since been upgraded to support digital signals as well.

Question 9

Cladding is the coating that surrounds fiber-optic cables and prevents light from leaking out of the fiber.

Accepted Answer

Cladding is the coating that surrounds fiber-optic cables and prevents light from leaking out of the fiber, making sure that the transmitted data stays intact.

Question 10

Voice and data communications are becoming faster but slightly more expensive.

Accepted Answer

Voice and data communications costs have generally been decreasing due to technological advancements and increased competition among service providers.

Question 11

Digital signals are continuous waves that transmit information by altering the characteristics of the waves.

Accepted Answer

Digital signals are not continuous waves. They consist of discrete values or states (such as 0s and 1s) that represent the information being transmitted. The characteristics of the signal may be altered to represent these values, but the signal itself is not continuous.

Question 12

IPv6 allows devices to more quickly connect to the Internet than IPv4.

Accepted Answer

IPv6 does not inherently allow devices to connect more quickly to the Internet than IPv4; it primarily provides a vastly larger address space and improved address management features.

Question 13

LANs typically contain multiple WANs.

Accepted Answer

This statement is not correct. LANs (Local Area Networks) are designed to connect devices within a specific geographic area, while WANs (Wide Area Networks) are used to connect devices that are located in different geographic areas. LANs may connect to WANs to reach devices outside of the local area, but LANs themselves do not typically contain multiple WANs.

Question 14

Currently, ATM networks operate only on fiber-optic cable.

Accepted Answer

This statement is true. ATM networks use fiber-optic cable for their high-speed data transmission capabilities.

Question 15

Digital signals are discrete pulses that are either on or off.

Accepted Answer

Digital signals are binary, meaning they have two states - on or off, represented by the digits 1 and 0. Therefore, they are discrete pulses that are either on or off.

Question 16

A local area network connects two or more communicating devices in a limited geographical area.

Accepted Answer

A local area network (LAN) is a network that connects devices within a limited area such as a home, office, or building. It allows devices to share resources and communicate with one another. Examples of LANs include Wi-Fi networks, Ethernet networks, and Bluetooth networks.

Question 17

Network interface cards are special adapters that link an individual device to the communications medium on a local area network.

Accepted Answer

Network interface cards, also known as NICs, are adapters that allow devices to connect to a local area network. They facilitate communication between the device and the network by translating the electrical signals from the device into a form that can be transmitted over the network medium. NICs come in different types, including wired and wireless options, and are essential for enabling communication and data exchange over a LAN.

Question 18

The World Wide Web is synonymous with the Internet.

Accepted Answer

The World Wide Web is a subset of the Internet. The Internet includes other services such as email, file transfer protocol (FTP), and internet telephony, while the World Wide Web is a collection of interconnected documents and pages accessible via the internet through a web browser.

Question 19

The network interface card typically houses the LAN's network operating system.

Accepted Answer

The network interface card (NIC) is a hardware component that enables a device to connect to a network. It does not house the network operating system (NOS), which is software that manages and controls network resources. The NOS is typically installed on servers or other devices that act as central hubs for managing the network.

Question 20

Twisted-pair wire is the least-used form of communications wiring.

Accepted Answer

Twisted-pair wire is actually the most commonly used form of communications wiring, particularly in Ethernet networks.

Quiz 4: Networks

Wide-area networks have a large capacity, and they typically use a single communications channel.

Digital signals have two parameters: frequency and amplitude.

Systems that use digital subscriber lines (DSL)do not require modems.

The Internet is a wide area network.

Peer-to-peer processing means each computer acts as both a client and a server.

Cable media use wires or cables to transmit data and information.

Ethernet is a common LAN protocol.

The U.S.public telephone system was designed as an analog network to carry voice signals.

Cladding is the coating that surrounds fiber-optic cables and prevents light from leaking out of the fiber.

Voice and data communications are becoming faster but slightly more expensive.

Digital signals are continuous waves that transmit information by altering the characteristics of the waves.

IPv6 allows devices to more quickly connect to the Internet than IPv4.

LANs typically contain multiple WANs.

Currently, ATM networks operate only on fiber-optic cable.

Digital signals are discrete pulses that are either on or off.

A local area network connects two or more communicating devices in a limited geographical area.

Network interface cards are special adapters that link an individual device to the communications medium on a local area network.

The World Wide Web is synonymous with the Internet.

The network interface card typically houses the LAN's network operating system.

Twisted-pair wire is the least-used form of communications wiring.