Management Information Systems Chapter 7

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Questions and Answers

What is the primary function of a network server computer in a client/server computing model?

To act as a standalone computing device

To connect multiple mainframe computers together

To set rules of communication for the network and provide each client with an address (correct)

To route packets of data in a packet-switched network

What is the primary advantage of packet switching over traditional circuit-switched networks?

Faster transmission speeds

Reduced network latency

More efficient use of network communications capacity (correct)

Improved network security

What is the process of slicing digital messages into parcels called?

Packet formation

Packet switching (correct)

Packet assembly

Packet routing

What is the primary difference between packet-switched networks and traditional circuit-switched networks?

Packet-switched networks do not require a dedicated end-to-end circuit Signup and view all the answers

What happens to packets of data in a packet-switched network after they are transmitted over various communication channels?

They are reassembled at their final destination Signup and view all the answers

What type of computing model has largely replaced centralized mainframe computing?

Client/server computing model Signup and view all the answers

What is the primary function of a modem?

To translate digital signals into analog form Signup and view all the answers

Which of the following network topologies is NOT mentioned in the text?

Mesh Signup and view all the answers

What type of network is used to connect devices in a limited geographical area, such as a college campus?

Campus-area network (CAN) Signup and view all the answers

What is the main difference between a local-area network (LAN) and a wide-area network (WAN)?

The geographical area covered Signup and view all the answers

Which type of network is used to connect devices over a large geographical area, such as a city or state?

Wide-area network (WAN) Signup and view all the answers

What type of transmission media is used in modems?

Twisted wire Signup and view all the answers

What is the purpose of communication satellites in BP's transmission system?

To transfer seismic data between oil exploration ships and research centers Signup and view all the answers

What is an advantage of using DWDM?

Increased transmission speed Signup and view all the answers

What type of device is used in wireless transmission?

All of the above Signup and view all the answers

What is the term for the measure of transmission speed?

Hertz Signup and view all the answers

What is the global network that connects computers and devices worldwide?

Internet Signup and view all the answers

What is the primary purpose of a virtual private network?

To protect data transmitted over the public Internet Signup and view all the answers

How does a VPN protect data transmitted over the public Internet?

By encoding the data and wrapping it within the Internet Protocol Signup and view all the answers

What is the main concern in monitoring employee e-mail and Internet usage?

Managers may be infringing on employees' privacy Signup and view all the answers

What should an effective e-mail and Web use policy for a company include?

Clear guidelines for employee conduct Signup and view all the answers

Should managers inform employees that their Web behavior is being monitored?

Yes, to maintain transparency and trust Signup and view all the answers

What is the primary benefit of using a VPN over the public Internet?

Improved security and privacy Signup and view all the answers

What is the structure of the Domain Name System?

Hierarchical system with multiple levels Signup and view all the answers

What is the function of Network Access Points (NAPs) and Metropolitan Area Exchanges (MAEs)?

To connect regional networks to the Internet backbone Signup and view all the answers

What is the main issue in the debate over Net Neutrality?

Whether Internet service providers should be allowed to prioritize certain types of Internet traffic Signup and view all the answers

What is the role of the Internet backbone?

To connect regional networks to the global Internet Signup and view all the answers

What is the main characteristic of the Internet's network architecture?

It is a decentralized system with multiple hubs Signup and view all the answers

What is the role of ICANN in Internet governance?

To manage domain name assignments Signup and view all the answers

Study Notes

Key Networking Technologies

Client/server computing is a model where clients are linked through a network controlled by a network server computer, which sets the rules of communication for the network and provides each client with an address.
The Internet is the largest implementation of client/server computing.
Packet switching is a method of slicing digital messages into packets, sending packets along different communication paths, and reassembling them at the destination.

Packet-Switched Networks and Packet Communications

Data are grouped into small packets, transmitted independently over various communications channels, and reassembled at their final destination.

Internet Addressing and Architecture

The Domain Name System (DNS) is a hierarchical system with a root domain, top-level domains, second-level domains, and host computers at the third level.
DNS is responsible for translating domain names into IP addresses.

Internet Network Architecture

The Internet backbone connects to regional networks, which in turn provide access to Internet service providers, large firms, and government institutions.
Network access points (NAPs) and metropolitan area exchanges (MAEs) are hubs where the backbone intersects regional and local networks.

Types of Networks

Local-area networks (LANs) connect devices in a limited geographical area.
Campus-area networks (CANs) connect multiple LANs within a campus or building.
Metropolitan-area networks (MANs) connect multiple LANs and WANs in a metropolitan area.
Wide-area networks (WANs) connect multiple LANs and WANs over a large geographical area.

Network Topologies

Star topology: a central device connects to multiple devices.
Bus topology: a single cable connects multiple devices.
Ring topology: devices are connected in a circular configuration.

Physical Transmission Media

Twisted wire (modems) transmit data over analog networks.
Coaxial cable supports high-speed data transmission.
Fiber optics and optical networks transmit data as light signals.
Dense wavelength division multiplexing (DWDM) increases fiber optic transmission speed.

Wireless Transmission Media and Devices

Microwave transmissions use high-frequency electromagnetic waves.
Satellites transmit data between distant locations.
Cellular telephones use cellular networks to transmit data.

Virtual Private Networks (VPNs)

A VPN creates a private network using a secure "tunnel" connection over the Internet.
Data is encoded and "wrapped" within the Internet Protocol (IP) for secure transmission.

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Description

This quiz covers telecommunications, the internet, and wireless technology in today's business world. It explores key networking technologies, including client/server computing and distributed computing models.