Question 1

Data communications deals with the transmission of signals in a reliable and efficient manner.

Accepted Answer

Data communications involves the exchange of data through various mediums or channels. To ensure effective communication, signals must be transmitted reliably and efficiently between the sender and receiver. Therefore, the statement is true.

Question 2

The increasing use of optical fiber,while greatly increasing capacity,has caused an increase in transmission prices as well.

Accepted Answer

The increasing use of optical fiber has actually resulted in a decrease in transmission prices due to its efficient and cost-effective performance.

Question 3

Changes in corporate data traffic patterns are driving the creation of high-speed WANs.

Accepted Answer

As the demand for data transmission and collaboration among geographically dispersed offices increases, corporate data traffic patterns are changing and driving the need for high-speed WANs. This allows for quicker and more efficient communication between offices, leading to increased productivity and competitiveness in the market.

Question 4

The growth of ________ enhances the ability of employees to take their business context with them as they move about,resulting in the ability to use enterprise information resources and services from virtually anywhere.
A)extranets
B)high-speed wireless access
C)WANS
D)remote data access

Accepted Answer

High-speed wireless access allows employees to access enterprise information resources and services from virtually anywhere, enabling them to take their business context with them as they move about. Extranets, WANs, and remote data access can also contribute to this growth, but they do not specifically enhance the ability of employees to access resources and services from anywhere with the same level of convenience and speed as high-speed wireless access.

Question 5

An ________ uses Internet and Web technology in an isolated facility internal to an enterprise.
A)application network
B)intranet
C)extranet
D)Internet portal

Accepted Answer

An intranet is a private network that uses Internet and Web technology within an organization or enterprise. It is an isolated facility used for internal communication, information sharing, and collaboration among employees.

Question 6

Growth in services and growth in traffic capacity go hand in hand.

Accepted Answer

As demand for services grows, the traffic capacity (such as the number of servers or bandwidth) must also increase to accommodate the increased demand. Without sufficient capacity, services may become slow or inaccessible, leading to a poor user experience. Therefore, growth in services and growth in traffic capacity are often interdependent.

Question 7

The LAN is owned by the same organization that owns the attached devices.

Accepted Answer

A LAN (Local Area Network) is a network of computers and other devices that are connected in a relatively small area such as a building or a campus. The LAN is usually owned and managed by the same organization that owns and manages the devices connected to it. Therefore, the statement is true.

Question 8

DWDM enables capacities of ________ per second.
A)terabits
B)picobits
C)megabits
D)gigabits

Accepted Answer

DWDM technology enables high-capacity data transmission by using multiple wavelengths of light to transmit data simultaneously over a single optical fiber. This technology can support capacities exceeding terabits per second, making it a suitable option for high-bandwidth applications such as video streaming, cloud computing, and data center interconnectivity. Therefore, the best choice is A) terabits.

Question 9

Effective and efficient data communication and networking facilities are vital to any enterprise.

Accepted Answer

Effective and efficient data communication and networking facilities are crucial for enterprises to ensure smooth operation and timely delivery of services. Without adequate networking infrastructure, businesses can face communication breakdowns, data loss, and other related issues, leading to decreased productivity and revenue loss. Therefore, it's essential to invest in robust networking solutions that enable fast, secure, and reliable data transfer to support business growth and sustainability.

Question 10

A modem is required to establish communication between a workstation and a server over a public telephone network.

Accepted Answer

A modem converts digital signals from a computer into analog signals that can be transmitted over a telephone line. It is necessary to use a modem to establish a connection between a workstation and a server over a public telephone network.

Question 11

A network in which small chunks of data are passed through the network from node to node,and at each node the entire data chunk is received,stored briefly,and then transmitted to the next node,is a ________ network.
A)packet switching
B)ATM
C)circuit switching
D)frame relay

Accepted Answer

In packet switching, data is divided into smaller units, called packets, which are then transmitted through the network from node to node, where each node receives and retransmits the entire packet. This is in contrast to circuit switching, where a dedicated communication path is established between two nodes, and frame relay and ATM, which use a combination of packet switching and circuit switching. Therefore, the best choice for the network type described is A) packet switching.

Question 12

The basic building block of any communications facility is the transmission line.

Accepted Answer

A transmission line is the basic building block of any communications facility as it carries the signal from the source to the destination. It is an essential component of many communication systems, including radio, television, and telephone networks.

Question 13

It is not necessary for a device to interface with the transmission system in order to communicate.

Accepted Answer

Devices typically need to interface with a transmission system, such as a network or communication protocol, to send and receive data effectively.

Question 14

Compression refers to the ability of a number of devices to share a transmission facility.

Accepted Answer

Compression refers to the process of reducing the size of data or files to save space or transmission time, not to the sharing of a transmission facility by multiple devices.

Question 15

Enterprises have formed ________ to reach customers,suppliers,and partners while isolating their proprietary information from unwanted access.
A)intranets and extranets
B)internets and extranets
C)WANS and extranets
D)LANS and WANS

Accepted Answer

Intranets are private networks within an organization that allow internal communication and collaboration while extranets allow limited access to external parties like customers, suppliers, and partners. Both intranets and extranets provide a secure way to reach these external parties while keeping proprietary information safe. Option B is incorrect as the internet is a public network not suitable for proprietary information. Option C and D are incorrect as WANs and LANs are types of networks that may be used within an organization but are not specific to reaching external parties.

Question 16

There are no fundamental differences among data,voice,and video communications.

Accepted Answer

Data, voice, and video communications all use the same underlying technology, which is the transmission of data over a network. The only difference is in the way that the data is encoded and transmitted.

Question 17

Frame relay networks are commonly used for terminal-to- computer and computer-to-computer communications.

Accepted Answer

The answer of Frame relay networks are commonly used for...

Question 18

Developing switching systems with the capacity and rapid response to support the demand requirements with the increased use of fiber optic transmission is no longer a challenge.

Accepted Answer

With the continuous increase in data traffic and demand for high-speed internet, developing switching systems that can keep up with the capacity and rapid response required for fiber optic transmission remains a significant challenge. These systems must constantly evolve to handle higher data rates and lower latency.

Question 19

There are several fundamental differences between data processing and data communications.

Accepted Answer

The answer of There are several fundamental differences between data...

Question 20

Convergence refers to the merger of previously distinct telephony and information technologies and markets.

Accepted Answer

Convergence is the merging of telephony and information technologies and markets, making it true that convergence refers to the merger of previously distinct telephony and information technologies and markets.

Quiz 1: Data Communications, data Networks,