- Published: October 17, 2022
- Updated: October 17, 2022
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Chapter 7 Telecommunications, the Internet, and Wireless Technology
1) Telephone networks are fundamentally different from computer networks. Answer: TRUE
2) Increasingly, voice, video, and data communications are all based on Internettechnology. Answer: TRUE
3) To create a computer network, you must have at least two computers. Answer: TRUE
4) An NOS must reside on a dedicated server computer in order to manage a network. Answer: FALSE
5) A hub is a networking device that connects network components and is used to filter and forward data to specified destinations on the network. Answer: FALSE
6) In a client/server network, a network server provides every connected client with an address so it can be found by others on the network. Answer: TRUE
7) Central large mainframe computing has largely replaced client/server computing. Answer: FALSE
8) Circuit switching makes much more efficient use of the communications capacity of a network than does packet switching. Answer: FALSE
9) A protocol is a standard set of rules and procedures for the control of communications in a network. Answer: TRUE
10) Two computers using TCP/IP can communicate even if they are based on different hardware and software platforms. Answer: TRUE
11) In a ring topology, one station transmits signals, which travel in both directions along a single transmission segment. Answer: FALSE
12) Coaxial cable is similar to that used for cable television and consists of thickly insulated copper wire. Answer: TRUE
13) Fiber-optic cable is more expensive and harder to install than wire media. Answer: TRUE
14) The number of cycles per second that can be sent through any telecommunications medium is measured in kilobytes. Answer: FALSE
15) The Domain Name System (DNS) converts IP addresses to domain names. Answer: FALSE
16) VoIP technology delivers video information in digital form using packet switching. Answer: TRUE
17) Web 3. 0 is a collaborative effort to add a layer of meaning to the existing Web in order to reduce the amount of human involvement in searching for and processing Web information. Answer: TRUE
18) Wi-Fi enables users to freely roam from one hotspot to another even if the next hotspot is using different Wi-Fi network services. Answer: FALSE
19) WiMax has a wireless access range of up to 31 miles. Answer: TRUE
20) RFID has been exceptionally popular from the technology’s inception because of its low implementation costs. Answer: FALSE
21) The device that acts as a connection point between computers and can filter and forward data to a specified destination is called a(n)
- A) hub.
- B) switch.
- C) router.
- D) NIC.
22) The Internet is based on which three key technologies?
- A) TCP/IP, HTML, and HTTP
- B) TCP/IP, HTTP, and packet switching
- C) client/server computing, packet switching, and the development of communications standards for linking networks and computers
- D) client/server computing, packet switching, and HTTP
23) The method of slicing digital messages into parcels, transmitting them along differentcommunicationpaths, and reassembling them at their destinations is called
- A) multiplexing.
- B) packet switching.
- C) packet routing.
- D) ATM.
24) The telephone system is an example of a ________ network.
- A) peer-to-peer
- B) wireless
- C) packet-switched
- D) circuit-switched
25) Which of the following is not a characteristic of packet switching?
- A) Packets travel independently of each other.
- B) Packets are routed through many different paths.
- C) Packet switching requires point-to-point circuits.
- D) Packets include data for checking transmission errors.
26) In TCP/IP, IP is responsible for
- A) disassembling and reassembling of packets during transmission.
- B) establishing an Internet connection between two computers.
- C) moving packets over the network.
- D) sequencing the transfer of packets.
27) In a telecommunications network architecture, a protocol is
- A) a device that handles the switching of voice and data in a local area network.
- B) a standard set of rules and procedures for control of communications in a network.
- C) a communications service for microcomputer users.
- D) the main computer in a telecommunications network.
28) What are the four layers of the TCP/IP reference model?
- A) physical, application, transport, and network interface
- B) physical, application, Internet, and network interface
- C) application, transport, Internet, and network interface
- D) application, hardware, Internet, and network interface
29) Which signal types are represented by a continuous waveform?
- A) laser
- B) optical
- C) digital
- D) analog
30) To use the analog telephone system for sending digital data, you must also use
- A) a modem.
- B) a router.
- C) DSL.
- D) twisted wire.
31) Which type of network is used to connect digital devices within a half-mile or 500-meter radius?
- A) microwave
- B) LAN
- C) WAN
- D) MAN
32) Which of the following Internet connection types offers the greatest bandwidth?
- A) T3
- B) DSL
- C) cable
- D) T1
33) Which type of network would be most appropriate for a business that comprised three employees and a manager located in the same office space, whose primary need is to share documents?
- A) wireless network in infrastructure mode
- B) domain-based LAN
- C) peer-to-peer network
- D) campus area network
34) In a bus network
- A) signals are broadcast to the next station.
- B) signals are broadcast in both directions to the entire network.
- C) multiple hubs are organized in a hierarchy.
- D) messages pass from computer to computer in a loop.
35) All network components connect to a single hub in a ________ topology.
- A) star
- B) bus
- C) domain
- D) peer-to-peer
36) The most common Ethernet topology is
- A) bus.
- B) star.
- C) ring.
- D) mesh.
37) A network that ps a city, and sometimes its major suburbs as well, is called a
- A) CAN.
- B) MAN.
- C) LAN.
- D) WAN.
38) A network that covers broad geographical regions is most commonly referred to as a(n)
- A) local area network.
- B) intranet.
- C) peer-to-peer network.
- D) wide area network.
39) ________ work by using radio waves to communicate with radio antennas placed within adjacent geographic areas.
- A) Cell phones
- B) Microwaves
- C) Satellites
- D) WANs
40) Bandwidth is the
- A) number of frequencies that can be broadcast through a medium.
- B) number of cycles per second that can be sent through a medium.
- C) difference between the highest and lowest frequencies that can be accommodated on a single channel.
- D) total number of bytes that can be sent through a medium per second.
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