INM 2 Chapter 6 June Exam preparation – 2018 PDF

Preview

Summary

Download INM 2 Chapter 6 June Exam preparation – 2018 PDF

Description

5/13/2018

Review Test Submission: Chapter 6 Review – 2018_0_...

EMILE LUBANGI KITENGE

MyClassroom

H

Content

Exam Preparation

Subjects/Modules

Review Test Submission: Chapter 6 Review

Review Test Submission: Chapter 6 Review User

MR EMILE LUBANGI KITENGE

Course

INFORMATION MANAGEMENT 2

Test

Chapter 6 Review

Started

13/05/18 12:49

Submitted

13/05/18 12:49

Status

Completed

Attempt Score

0 out of 65 points

Time Elapsed

0 minute

Results Displayed All Answers, Feedback, Incorrectly Answered Questions

Question 1

0 out of 1 points

A _____ is a hardware device that allows several nodes to share one communication channel. Answers: a. router b. multiplexer c. terminator d. controller Response Feedback:

Rationale: Feedback: A multiplexer is a hardware device that allows several nodes to share one communication channel. See 6-5d: Hierarchical Topology.

Question 2

0 out of 1 points

A _____ network is a network operating on a radio frequency (RF), consisting of radio cells, each served by a fixed transmitter. Answers: a. wired b. mesh c. mobile d. dynamic Response Rationale: Feedback: Feedback: A mobile network (also called a “cellular network”) is a network operating on a radio frequency (RF), consisting of radio cells, each served by a fixed transmitter, known as a “cell site” or “base station.” See 6-7: Wireless and Mobile Networks.

Question 3

0 out of 1 points

https://myclassroom.cput.ac.za/webapps/assessment/review/review.jsp?attempt id= 2054416 1&course id= 56868 1&content id= 768685 1&return content=

5/13/2018

Review Test Submission: Chapter 6 Review – 2018_0_...

A communication network shortens product and service development life cycles and delivers information to those who need it faster and more efficiently. Answers: True False Response Rationale: Feedback: Feedback: A communication network, a crucial part of an organization’s information

system, shortens product and service development life cycles and delivers information to those who need it faster and more efficiently. See 6-1a: Why Managers Need to Know About Data Communication.

Question 4

0 out of 1 points

A hierarchical topology is also called a _____ topology. Answers: a. tree b. mixed c. layered d. vertical Response Rationale: Feedback: Feedback: A hierarchical topology (also called a “tree”) combines computers with different processing strengths in different organizational levels. See 6-5d: Hierarchical Topology.

Question 5

0 out of 1 points

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? Answers: a. SSID (Service Set Identifier) b. UDP (User Datagram Protocol) c. WPA2 (Wi-Fi Protected Access 2) d. WEP (Wired Equivalent Privacy) Response Rationale: Feedback: Feedback: WPA2 or 802.11i is a technique that uses EAP (Extensible Authentication Protocol) to obtain a master key. With this master key, a user’s computer and access point (AP) negotiate for a key that will be used for a session. After the session is terminated, the key is discarded. See 6-8: Wireless Security.

Question 6

0 out of 1 points

A network _____ represents a network’s physical layout. Answers: a. protocol b. topology c. packet https://myclassroom.cput.ac.za/webapps/assessment/review/review.jsp?attempt id= 2054416 1&course id= 56868 1&content id= 768685 1&return content=

5/13/2018

Review Test Submission: Chapter 6 Review – 2018_0_...

d. utility Response Feedback:

Rationale: Feedback: A network topology represents a network’s physical layout, including the arrangement of computers and cables. See 6-5: Network Topologies.

Question 7

0 out of 1 points

A network interface card (NIC) operates at the Open Systems Interconnection (OSI) model’s _____ layers. Answers: a. Presentation and Application b. Session and Presentation c. Network and Transport d. Physical and Data Link Response Rationale: Feedback: Feedback: A network interface card (NIC), also called an “adapter card,” is the physical link between a network and a workstation, so it operates at the Open Systems Interconnection (OSI) model’s Physical and Data Link layers. See 6-4: Types of Networks.

Question 8

0 out of 1 points

A ring topology needs more cables to connect the nodes within a network than a star topology. Answers: True False Response Rationale: Feedback: Feedback: A ring topology needs less cable than a star topology, but it is similar to a

star topology in that it is better for handling heavy but short bursts of traffic. See 65b: Ring Topology.

Question 9

0 out of 1 points

A routing table lists _____. Answers: a. protocols that each node understands b. the IP address of a router c. packets to be sent d. nodes on a network Response Feedback:

Question 10

Rationale: Feedback: A routing table lists nodes on a network and the path to each node, along with alternate routes and the speed of existing routes. See 6-6c: Routing.

0 out of 1 points

A(n) _____ cable is used to connect computers, hubs, switches, and routers to a network. https://myclassroom.cput.ac.za/webapps/assessment/review/review.jsp?attempt id= 2054416 1&course id= 56868 1&content id= 768685 1&return content=

5/13/2018

Review Test Submission: Chapter 6 Review – 2018_0_...

Answers: a. patch b. fiber optic c. Ethernet d. coaxial Response Feedback:

Rationale: Feedback: An Ethernet cable is used to connect computers, hubs, switches, and routers to a network. See 6-4a: Local Area Networks.

Question 11

0 out of 1 points

A(n) _____ is a device that connects a user to the Internet. Answers: a. applet b. modem c. cookie d. pen drive Response Feedback:

Rationale: Feedback: A modem (short for “modulator-demodulator”) is a device that connects a user to the Internet. See 6-2b: Modems.

Question 12

0 out of 1 points

A(n) _____ is a network connection device, which can build tables that identify addresses on each network. Answers: a. adapter card b. dynamic router c. switch d. hub Response Rationale: Feedback: Feedback: A router is a network connection device containing software that connects network systems and controls traffic flow between them. A dynamic router can build tables that identify addresses on each network. See 6-6d: Routers.

Question 13

0 out of 1 points

An access point (AP) is the part of a wireless local area network (WLAN) that connects it to other networks. Answers: True False Response Feedback:

Rationale:

Feedback: An access point (AP) is the part of a wireless local area network (WLAN) that connects it to other networks. See 6-8: Wireless Security.

https://myclassroom.cput.ac.za/webapps/assessment/review/review.jsp?attempt id= 2054416 1&course id= 56868 1&content id= 768685 1&return content=

5/13/2018

Review Test Submission: Chapter 6 Review – 2018_0_...

Question 14

0 out of 1 points

Any packet-switching network can handle multimedia data. Answers: True False

Rationale:

Response Feedback:

Feedback: Any packet-switching network can handle multimedia data, such as text, graphics, audio, and video. See 6-6c: Routing.

Question 15

0 out of 1 points

Computers in a local area network (LAN) are usually connected to the network via a(n) _____, which is a hardware component. Answers: a. IP address b. adapter card c. broadcast radio d. network protocol Response Rationale: Feedback: Feedback: In a local area network (LAN), computers are usually connected to the network via a network interface card (NIC), also called an “adapter card,” a hardware component that enables computers to communicate over a network. See 6-4: Types of Networks.

Question 16

0 out of 1 points

Data communication technologies make Web and video conferencing easier, which can reduce the costs of business travel. Answers: True False Response Rationale: Feedback: Feedback: Data communication technologies make Web and video conferencing easier, which can reduce the costs of business travel. See 6-1a: Why Managers Need to Know About Data Communication.

Question 17

0 out of 1 points

Data transfer rates of local area networks (LANs) are typically below 100 Mbps. Answers: True False Response Feedback:

Question 18

Rationale:

Feedback: Data transfer speeds of local area networks (LANs) typically vary from 100 Mbps to 10 Gbps. See 6-4a: Local Area Networks.

0 out of 1 points

https://myclassroom.cput.ac.za/webapps/assessment/review/review.jsp?attempt id= 2054416 1&course id= 56868 1&content id= 768685 1&return content=

5/13/2018

Review Test Submission: Chapter 6 Review – 2018_0_...

Data transmission channels are generally divided into two types: broadband and narrowband. Answers: True False Response Rationale: Feedback: Feedback: Data transmission channels are generally divided into two types:

broadband and narrowband. See 6-2: Basic Components of a Data Communication System.

Question 19

0 out of 1 points

Distributed processing maintains decentralized control and centralized operations. Answers: True False Response Feedback:

Rationale: Feedback: Distributed processing maintains centralized control and decentralized operations. See 6-3c: Distributed Processing.

Question 20

0 out of 1 points

Ethernet is a standard communication protocol embedded in software and hardware devices used for building a local area network (LAN). Answers: True False Response Rationale: Feedback: Feedback: Ethernet is a standard communication protocol embedded in software and hardware devices used for building a local area network (LAN). See 6-4a: Local Area Networks.

Question 21

0 out of 1 points

Horizontal scaling of client/server architecture means _____. Answers: a. adding more workstations b. adding more proxy servers c. migrating the network to decentralized servers d. migrating the network to faster servers Response Rationale: Feedback: Feedback: Horizontal scaling means adding more workstations (clients), and vertical scaling means migrating the network to larger, faster servers. See 6-6e: Client/Server Model.

Question 22

0 out of 1 points

Identify a layer of the Open Systems Interconnection (OSI) model that provides methods for controlling data flow, ordering received data, and acknowledging received data. https://myclassroom.cput.ac.za/webapps/assessment/review/review.jsp?attempt id= 2054416 1&course id= 56868 1&content id= 768685 1&return content=

5/13/2018

Review Test Submission: Chapter 6 Review – 2018_0_...

Answers: a. Transport layer b. Physical layer c. Data link layer d. Network layer Response Rationale: Feedback: Feedback: The transport layer provides methods for controlling data flow, ordering received data, and acknowledging received data. See 6-3d: Open Systems Interconnection Model.

Question 23

0 out of 1 points

Identify a topology used by traditional mainframe networks. Answers: a. Mesh topology b. Ring topology c. Star topology d. Hierarchical topology Response Rationale: Feedback: Feedback: Traditional mainframe networks use a hierarchical topology. The mainframe computer is at the top, front-end processors (FEPs) are at the next level, controllers and multiplexers are at the next level, and terminals and workstations are at the bottom level. See 6-5d: Hierarchical Topology.

Question 24

0 out of 1 points

Identify a true statement about convergence in data communication. Answers: a. It is used to synchronize devices before establishing a communication link. b. It requires major network upgrades, because video requires much more bandwidth. c. It changes the path that data takes each time a connection is made. d.

It allows transmission of a limited amount of information in a specific period of time. Response Feedback:

Rationale: Feedback: Convergence requires major network upgrades, because video requires much more bandwidth. See 6-9: Convergence of Voice, Video, and Data.

Question 25

0 out of 1 points

Identify a true statement about distributed processing. Answers: a. It solves the lack of responsiveness in centralized processing. b. It solves the lack of security in decentralized processing. c. It solves the lack of individuality in decentralized processing. d. It solves the lack of coordination in centralized processing. https://myclassroom.cput.ac.za/webapps/assessment/review/review.jsp?attempt id= 2054416 1&course id= 56868 1&content id= 768685 1&return content=

5/13/2018

Review Test Submission: Chapter 6 Review – 2018_0_...

Response Rationale: Feedback: Feedback: Distributed processing solves two main problems—the lack of responsiveness in centralized processing and the lack of coordination in decentralized processing—by maintaining centralized control and decentralizing operations. See 63c: Distributed Processing.

Question 26

0 out of 1 points

Identify a true statement about the types of client/server architecture. Answers: a. An n-tier architecture tests software easily. b. A two-tier architecture allows easy upgrades to applications. c. An n-tier architecture helps improve network performance. d. A two-tier architecture allows a client-server communication using an application. Response Feedback:

Rationale: Feedback: Improving network performance is a major advantage of the n-tier architecture. See 6-6e: Client/Server Model.

Question 27

0 out of 1 points

Identify an advantage of a hierarchical topology over a star topology. Answers: a.

The hierarchical topology offers a great deal of network control, compared to the star topology. b.

The hierarchical topology’s cable layouts are easy to modify, compared to the star topology. c.

The hierarchical topology is more effective at handling heavy but short bursts of traffic, compared to the star topology. d.

The hierarchical topology allows network expansion easily, compared to the star topology. Response Feedback:

Rationale: Feedback: The hierarchical topology offers a great deal of network control, compared to the star topology. See 6-5d: Hierarchical Topology.

Question 28

0 out of 1 points

Identify an advantage of centralized processing. Answers: a. It ensures the processing power is distributed among several locations. b. It ensures that the response to users’ needs is abundant. c. It ensures data is securely shielded from other users as it is processed at one system. d. It ensures a tight control over system operations and applications. Response Rationale: https://myclassroom.cput.ac.za/webapps/assessment/review/review.jsp?attempt id= 2054416 1&course id= 56868 1&content id= 768685 1&return content=

5/13/2018

Review Test Submission: Chapter 6 Review – 2018_0_...

Feedback: Feedback: The main advantage of centralized processing is being able to exercise tight control over system operations and applications. See 6-3a: Centralized Processing.

Question 29

0 out of 1 points

Identify an advantage of the bus topology. Answers: a. It detects problems easily due to its centralized control. b. It handles steady traffic well. c. It is more effective when network traffic is heavy. d. It eases fault diagnosis. Response Feedback:

Rationale: Feedback: The bus topology handles steady (even) traffic well. See 6-5c: Bus Topology.

Question 30

0 out of 1 points

Identify the layer of the Open Systems Interconnection (OSI) model in which the Transmission Control Protocol (TCP) operates. Answers: a. Network layer b. Physical layer c. Transport layer d. Data Link layer Response Rationale: Feedback: Feedback: The Transmission Control Protocol (TCP) operates at the Open Systems Interconnection (OSI) model’s Transport Layer. See 6-6b: Transmission Control Protocol/ Internet Protocol.

Question 31

0 out of 1 points

Identify the layer of the Open Systems Interconnection (OSI) model in which the Internet Protocol (IP) operates. Answers: a. Data Link layer b. Network layer c. Transport layer d. Physical layer Response Rationale: Feedback: Feedback: The Internet Protocol (IP) operates at the Open Systems Interconnection (OSI) model’s Network layer. See 6-6b: Transmission Control Protocol/ Internet Protocol.

Question 32

0 out of 1 points

https://myclassroom.cput.ac.za/webapps/assessment/review/review.jsp?attempt id= 2054416 1&course id= 56868 1&content id= 768685 1&return content=

5/13/2018

Review Test Submission: Chapter 6 Review – 2018_0_...

In _____ data transmission, multiple pieces of data are sent simultaneously to increase the transmission rate. Answers: a. voiceband b. broadband c. sideband d. narrowband Response Rationale: Feedback: Feedback: In broadband data transmission, multiple pieces of data are sent simultaneously to increase the transmission rate. See 6-2: Basic Components of a Data Communication System.

Question 33

0 out of 1 points

In _____ processing, each department has its own computer for performing processing tasks. Answers: a. centralized b. decentralized c. distributed d. modular Response Rationale: Feedback: Feedback: In decentralized processing, each user, department, or division has its own computer (sometimes called an “organizational unit”) for performing processing tasks. See 6-3b: Decentralized Processing.

Question 34

0 out of 1 points

In a _____, if any link between nodes is severed, the entire network is affected, and failure of a single node disrupts the entire network. Answers: a. mesh topology b. ring topology c. star topology d. bus topology Response Rationale: Feedback: Feedback: In a ring topology, if any link between nodes is severed, the entire network is affected, and failure of a single node disrupts the entire network. See 6-5b: Ring Topology.

Question 35

0 out of 1 points

In a centralized processing system, processing power is distributed among several locations. Answers: True False Response Rationale: https://myclassroom.cput.ac.za/webapps/assessment/review/review.jsp?attempt id= 2054416 1&course id= 56868 1&content id= 768685 1&return content=

5/13/2018

Review Test Submission: Chapter 6 Review – 2018_0_...

Feedback: Feedback: In a centralized processing system, all processing is done at one central

computer; whereas in distributed processing, processing power is distributed among several locations. See 6-3a: Centralized Processing.

Question 3...