Question 1

A _________ is a collection of binary digits,including message data and control characters for formatting and transmitting,sent from computer to computer over a network.
A)bandwidth
B)packet
C)topology
D)protocol

Accepted Answer

A packet is a collection of binary digits that includes the message data and control characters for formatting and transmitting data over a network. Bandwidth refers to the amount of data that can be transmitted over a network in a given amount of time. Topology refers to the physical or logical layout of a network. Protocol refers to the set of rules and standards that govern the communication and data exchange between devices on a network. Therefore, the best choice for this question is B) packet.

Question 2

A _________ is typically used to connect workstations and peripheral devices that are in close proximity.
A)controller area network (CAN)
B)metropolitan area network (MAN)
C)wide area network (WAN)
D)local area network (LAN)

Accepted Answer

LAN is the most appropriate choice for connecting workstations and peripheral devices that are located in close proximity to each other, such as within a building or campus. CAN is a network protocol commonly used in vehicles and industrial control systems, MAN is used to connect multiple LANs in a metropolitan area, and WAN is used to connect geographically dispersed locations.

Question 3

Communication media that use an antenna for transmitting data through air or water are called _________ media.
A)radiated
B)conducted
C)digitized
D)centralized

Accepted Answer

Antennas are used to radiate electromagnetic waves through the air or water, making option A the correct answer. Conducted media refers to the transmission of data through physical wires, digitized media refers to the conversion of analog signals to digital signals, and centralized media refers to a network architecture where all nodes connect to a central point.

Question 4

In data communication,_____ is a packet-switching service that operates at 25 Mbps and 622 Mbps.
A)Gigabit Ethernet
B)Asynchronous Transfer Mode (ATM)
C)3G network
D)IP multimedia subsystem (IMS)

Accepted Answer

Asynchronous Transfer Mode (ATM) operates at both 25 Mbps and 622 Mbps speeds and is a packet switching service commonly used in telecommunications networks. Gigabit Ethernet also operates at high speeds but is a different type of packet-switching technology used mainly in local area networks. 3G network and IP multimedia subsystem (IMS) are not packet-switching technologies but are mobile and multimedia communication systems, respectively.

Question 5

A(n)_________ processing system was justified because data-processing personnel were in short supply,hardware and software were expensive,and only large organizations could afford computers.
A)centralized
B)decentralized
C)distributed
D)interconnected

Accepted Answer

In a centralized processing system, all data processing takes place in one central location, allowing for easier control and management. This was the preferred model in the early days of computing due to limited resources and technical expertise. Decentralized and distributed processing systems have since emerged with advances in technology and more widespread availability of computer resources. Interconnected processing systems refer to multiple systems that are linked together, but do not specify a specific processing model.

Question 6

Both Wireless LANs (WLANs)and Wireless WANs (WWANs)rely on the _________ as the communication medium.
A)multiplexer
B)CIA triangle
C)controller
D)RF spectrum

Accepted Answer

Both WLANs and WWANs use the RF spectrum as the communication medium, as they rely on radio waves to transmit data wirelessly. Multiplexers and controllers are components used in networking, while the CIA triangle refers to the principles of information security.

Question 7

_________ is a technique to improve the security of wireless networks,which combines the strongest features of Wired Equivalent Privacy (WEP)and Extensible Authentication Protocol (EAP)techniques.
A)SSID (Service Set Identifier)
B)WEP (Wired Equivalent Privacy)
C)EAP (Extensible Authentication Protocol)
D)WPA (Wi-Fi Protected Access)​

Accepted Answer

WPA (Wi-Fi Protected Access) is a technique designed to improve the security of wireless networks. It combines the strongest features of Wired Equivalent Privacy (WEP) and Extensible Authentication Protocol (EAP) techniques to create a more reliable and secure wireless network.

Question 8

In the _________ architecture,the application logic is usually on the client side.
A)session tier
B)two-tier
C)middle-tier
D)data tier

Accepted Answer

In the two-tier architecture, the application logic is divided between the client side and the database server side, with the client side handling more of the processing tasks. The middle-tier and data tier are not directly involved in application logic in this architecture.

Question 9

A _________ works well for companies that are geographically dispersed.
A)ring topology
B)star topology
C)mesh topology
D)hierarchical topology

Accepted Answer

Hierarchical topology, also known as tree topology, works well for geographically dispersed companies because it allows for a scalable and structured way to manage network resources across different locations. It combines elements of both star and bus topologies, facilitating efficient communication and management across widespread areas.

Question 10

_________ is a set of rules that govern data communication,including error detection,message length,and transmission speed.
A)Throughput
B)Attenuation
C)Topology
D)Protocol

Accepted Answer

A protocol is a set of standardized rules and procedures used to facilitate data communication. It includes specifications for error detection and correction, message formatting, transmission speed and other parameters necessary for proper data transmission.

Question 11

A _________ is designed to handle data communication for multiple organizations in a city and sometimes nearby cities as well.
A)controller area network (CAN)
B)metropolitan area network (MAN)
C)wide area network (WAN)
D)local area network (LAN)​

Accepted Answer

A metropolitan area network (MAN) is designed to handle data communication for multiple organizations in a city and sometimes nearby cities as well. It covers a larger geographical area than a LAN but smaller than a WAN. CAN is used for communication between microcontrollers and devices within a limited area. WAN covers a larger geographical area than a MAN and LAN is used for communication within the same building or campus.

Question 12

_________ is a voice-grade transmission channel capable of transmitting a maximum of 56,000 bps,so only a limited amount of information can be transferred in a specific period of time.
A)Narrowband
B)Waveband
C)Broadband
D)Sideband

Accepted Answer

Narrowband refers to a communication channel that has a limited bandwidth, typically less than 64 kbps. Voice-grade transmission channels fall under this category, as they can transmit a maximum of 56,000 bps, which is lower than 64 kbps. Therefore, option A is the best choice as it accurately describes the given scenario.

Question 13

_________ is the loss of power in a signal as it travels from the sending device to the receiving device.
A)Attenuation
B)Convergence
C)Throughput
D)Routing

Accepted Answer

Attenuation refers to the loss of power in a signal as it travels from the sending device to the receiving device. Convergence refers to the coming together of multiple technologies or platforms, while throughput refers to the amount of data transferred in a given amount of time. Routing refers to the process of determining the best path for data to travel between devices on a network.

Question 14

In _________ routing,one node is in charge of selecting the path for all packets.
A)centralized
B)decentralized
C)distributed
D)clashed

Accepted Answer

In centralized routing, there is a central node that has complete control over selecting the path for all packets. This node can take into account various factors, such as network congestion and link reliability, to make optimal routing decisions. Decentralized and distributed routing, on the other hand, involve multiple nodes sharing the responsibility for selecting paths.

Question 15

In data communication,_____ refers to integrating voice,video,and data so that multimedia information can be used for decision making.
A)recurrence
B)convergence
C)telepresence
D)coexistence

Accepted Answer

Convergence refers to the integration of different forms of communication, such as voice, video, and data, into a single platform. This enables multimedia information to be easily shared and used for decision making. Recurrence refers to the repetition of a process, while telepresence refers to the use of technology to create a sense of presence in a remote location. Coexistence refers to the ability of different systems or technologies to exist together without interference.

Question 16

The _________ model is a seven-layer architecture for defining how data is transmitted from computer to computer in a network.
A)Transmission Control Protocol (TCP)
B)client / server
C)Open Systems Interconnection (OSI)
D)Basic Input / Output

Accepted Answer

The Open Systems Interconnection (OSI) model is a seven-layer architecture that provides a framework for how data is transmitted from computer to computer in a network. It breaks down the communication process into standardized layers, making it easier for different systems to communicate with each other. TCP is a protocol used within the OSI model, but it is not the same as the model itself. Client/server and Basic Input/Output are not models for data transmission in a network.

Question 17

Identify a true statement about convergence in data communication.
A)It changes the path that data takes each time a connection is made.
B)It allows transmission of a limited amount of information in a specific period of time.
C)It requires major network upgrades,because video requires much more bandwidth.
D)It is used to synchronize devices before establishing a communication link.

Accepted Answer

Convergence in data communication often requires network upgrades to handle increased bandwidth demands, especially for video transmission, which consumes more bandwidth than other types of data.

Question 18

A master key is obtained using which a user's computer and access point (AP)negotiate for a key that will be used for a session and is discarded once the session is terminated.Which of the following techniques helps obtain this master key?
A)SSID (Service Set Identifier)
B)WEP (Wired Equivalent Privacy)
C)UDP (User Datagram Protocol)
D)WPA2 (Wi-Fi Protected Access 2)

Accepted Answer

WPA2 (Wi-Fi Protected Access 2) is a security protocol that helps in obtaining the master key. WPA2 replaces WEP and provides stronger encryption of user data. SSID (Service Set Identifier) is a network name that allows wireless clients to identify and connect to the wireless network. UDP (User Datagram Protocol) is a transport layer protocol that provides a connectionless service and is often used for time-sensitive applications like video streaming. None of these techniques are directly related to obtaining a master key for a wireless session.

Question 19

In the context of communication media,_________ media provide a physical path along which signals are transmitted,including twisted pair copper cable,coaxial cable,and fiber optics.
A)radiated
B)conducted
C)digitized
D)decentralized

Accepted Answer

Conducted media provide a physical path (conductors) along which signals are transmitted, such as copper cable, coaxial cable, and fiber optics. Radiated media, on the other hand, transmit signals through the air or vacuum, such as radio waves or light waves. Digitized media involves converting analog signals into digital form for transmission, and decentralized media refers to a network structure where there is no centralized control. Neither of these options describe the physical path for signal transmission.

Question 20

The Wi-Fi Protected Access 2 (WPA2)uses _____ to obtain a master key,which is in turn used to negotiate for a key that will be used for a session.
A)Internet Protocol (IP)
B)Service Set Identifier (SSID)
C)Wired Equivalent Privacy (WEP)
D)Extensible Authentication Protocol (EAP)

Accepted Answer

WPA2 uses Extensible Authentication Protocol (EAP) to obtain a master key, which is then used to negotiate for a key that will be used for a session. EAP is a more secure and robust authentication protocol compared to the outdated Wired Equivalent Privacy (WEP) protocol. Internet Protocol (IP) and Service Set Identifier (SSID) are not used in the authentication or encryption process of WPA2.

Quiz 6: Data Communication: Delivering Information Anywhere and Anytime

A _________ is a collection of binary digits,including message data and control characters for formatting and transmitting,sent from computer to computer over a network.

A _________ is typically used to connect workstations and peripheral devices that are in close proximity.

Communication media that use an antenna for transmitting data through air or water are called _________ media.

In data communication,_____ is a packet-switching service that operates at 25 Mbps and 622 Mbps.

A(n) _________ processing system was justified because data-processing personnel were in short supply,hardware and software were expensive,and only large organizations could afford computers.

Both Wireless LANs (WLANs) and Wireless WANs (WWANs) rely on the _________ as the communication medium.

_________ is a technique to improve the security of wireless networks,which combines the strongest features of Wired Equivalent Privacy (WEP) and Extensible Authentication Protocol (EAP) techniques.

In the _________ architecture,the application logic is usually on the client side.

A _________ works well for companies that are geographically dispersed.

_________ is a set of rules that govern data communication,including error detection,message length,and transmission speed.

A _________ is designed to handle data communication for multiple organizations in a city and sometimes nearby cities as well.

_________ is a voice-grade transmission channel capable of transmitting a maximum of 56,000 bps,so only a limited amount of information can be transferred in a specific period of time.

_________ is the loss of power in a signal as it travels from the sending device to the receiving device.

In _________ routing,one node is in charge of selecting the path for all packets.

In data communication,_____ refers to integrating voice,video,and data so that multimedia information can be used for decision making.

The _________ model is a seven-layer architecture for defining how data is transmitted from computer to computer in a network.

Identify a true statement about convergence in data communication.

A master key is obtained using which a user's computer and access point (AP) negotiate for a key that will be used for a session and is discarded once the session is terminated.Which of the following techniques helps obtain this master key?

In the context of communication media,_________ media provide a physical path along which signals are transmitted,including twisted pair copper cable,coaxial cable,and fiber optics.

The Wi-Fi Protected Access 2 (WPA2) uses _____ to obtain a master key,which is in turn used to negotiate for a key that will be used for a session.