Question 1

TCP refers to the Transmission Control Protocol (TCP),which is responsible for the delivery of packets and includes the disassembling and reassembling of packets during transmission.

Accepted Answer

False

Question 2

Telephone networks are fundamentally different from computer networks.

Accepted Answer

Telephone networks are designed to transmit voice communication, while computer networks are designed to transmit data packets. The protocols, hardware, and software used in each network are designed for different purposes and are not interchangeable.

Question 3

A modem is a device that translates digital signals from a computer into analog form so that they can be transmitted over analog telephone lines.

Accepted Answer

This is the correct definition of a modem.

Question 4

IP refers to the Internet Protocol (IP),establishes a connection between the computers,sequences the transfer of packets,and acknowledges the packets sent.

Accepted Answer

The Internet Protocol (IP) is responsible for addressing and routing packets between computers, but it does not establish connections, sequence packets, or acknowledge them. These functions are handled by the Transmission Control Protocol (TCP).

Question 5

Ethernet is the dominant LAN standard at the physical network level,specifying the physical medium to carry signals between computers;access control rules;and a standardized set of bits used to carry data over the system.

Accepted Answer

This statement is true. Ethernet is a LAN standard that specifies the physical medium and access control rules for carrying signals between computers, as well as a standardized set of bits used to transmit data over the network.

Question 6

A analog signal is a discrete,binary waveform,rather than a continuous waveform.

Accepted Answer

This statement is incorrect. An analog signal is actually a continuous waveform. It varies in amplitude and frequency over time, unlike a digital signal which is discrete and binary.

Question 7

Each computer on the network contains a network interface device called a network operating card (NOC).

Accepted Answer

Each computer on the network contains a network interface device called a network interface card (NIC) or network adapter, not a "network operating card".

Question 8

Pocket switching is a method of slicing digital messages into parcels called pockets,sending the pockets along different communication paths as they become available,and then reassembling the pockets once they arrive at their destinations.

Accepted Answer

The correct term is "packet switching," not "pocket switching." Packet switching involves dividing messages into packets, sending them independently, and reassembling them at the destination.

Question 9

The most common LAN operating systems are Windows,Linux,and Novell.

Accepted Answer

Windows, Linux, and Novell are widely used LAN operating systems.

Question 10

Increasingly,voice,video,and data communications are all based on Internet technology.

Accepted Answer

This statement is true. IP-based communication technologies have become the standard for transmitting voice, video, and data over the internet. Examples include VoIP (voice over internet protocol), video conferencing, and cloud-based file sharing.

Question 11

A digital signal is represented by a continuous waveform that passes through a communications medium;analog signals are used for voice communication.

Accepted Answer

This statement is incorrect. A digital signal is represented by a series of discrete values (bits), while an analog signal is a continuous waveform. Analog signals can be used for more than just voice communication, such as music, video, and data transmission.

Question 12

Firms in the past used two fundamentally different types of networks: telephone networks and computer networks.

Accepted Answer

Firms have historically used telephone networks and computer networks as their predominant means of communication and data exchange.

Question 13

Increasingly,voice and data communication as well as Internet access are taking place over broadband wireless platforms,such as cell phones,handheld digital devices,and PCs in wireless networks.

Accepted Answer

This is true as broadband wireless platforms, such as cell phones, handheld digital devices, and PCs in wireless networks, are becoming more and more common for voice and data communication as well as Internet access.

Question 14

A peer-to-peer network treats all processors equally and is used primarily in small networks with 10 or fewer users.

Accepted Answer

Peer-to-peer networks are decentralized, with each computer having equal status and responsibilities, making them suitable for small networks with fewer users.

Question 15

In a bus topology,one station transmits signals,which travel in both directions along a single transmission segment.

Accepted Answer

In a bus topology, all stations are connected to a single transmission line or segment, and signals transmitted by any station travel in both directions along the length of the segment.

Question 16

Sometimes LANs are described in terms of the way their components are connected together,or their topology.

Accepted Answer

LANs can be described by their topology, which refers to the way devices are connected and the arrangement of cables.

Question 17

Packet switching makes much less efficient use of the communications capacity of a network.

Accepted Answer

Packet switching actually makes more efficient use of the communications capacity of a network by dividing data into small packets and sending them independently over various routes to their destination. This allows for more efficient use of bandwidth and greater flexibility in handling varying amounts of network traffic.

Question 18

A local-area network (LAN)is designed to connect personal computers and other digital devices within a half-mile or 500-metre radius.

Accepted Answer

A LAN is designed for a small geographical area, such as a home, office building or school, and generally covers a distance of up to 500 meters or half a mile.

Question 19

Due to continuing telecommunications deregulation and information technology innovation,telephone and computer networks are slowly converging into a single digital network using shared Internet-based standards and equipment.

Accepted Answer

This statement is true. The convergence of telephone and computer networks into a single digital network using shared Internet-based standards and equipment has been ongoing for several years due to deregulation and technological innovation.

Question 20

Contemporary digital networks and the Internet are based on four key technologies: client/server computing,the use of packet switching,the development of widely used communications standards and PC operating systems.

Accepted Answer

The four key technologies are client/server computing, packet switching, the development of communications standards, and the TCP/IP protocol suite, not PC operating systems.

Quiz 7: Telecommunications, the Internet, and Wireless Technology