Exam
Name___________________________________
1. Telephone networks are fundamentally different from computer networks.
2. Wikis allow visitors to change or add to the original posted material.
3. An NOS must reside on a dedicated server computer in order to manage a network.
4. A hub is a networking device that connects network components and is used to filter and forward data to
specified destinations on the network.
5. 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.
6. A computer network consists of at least three computers.
7. Central large mainframe computing has largely replaced client/server computing.
8. Circuit switching makes much more efficient use of the communications capacity of a network than does
packet switching.
9. Two computers using TCP/IP can communicate even if they are based on different hardware and software
platforms.
10. Over 80% of U.S. Internet users access the Internet via mobile devices.
11. Coaxial cable is similar to that used for cable television and consists of thickly insulated copper wire.
12. Fiber–optic cable is more expensive and harder to install than wire media.
13. The number of cycles per second that can be sent through any telecommunications medium is measured in
kilobytes.
14. The Domain Name System (DNS) converts IP addresses to domain names.
15. VoIP technology delivers video information in digital form using packet switching.
16. Web 3.0 is an 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.
17. In a large company today, you will often find an infrastructure that includes hundreds of small LANs linked
to each other as well as to corporate–wide networks.
18. TCP/IP was developed in the 1960s to enable university scientists to locate other computers on the Internet.
19. Mobile search makes up 20% of all Internet searches.
20. RFID technology is being gradually replaced by less costly technologies such as WSNs.
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) switch.
B) NIC.
C) hub.
D) router.
22. The Internet is based on which three key technologies?
A) TCP/IP, HTTP, and packet switching
B) TCP/IP, HTML, and HTTP
C) client/server computing, packet switching, and HTTP
D) client/server computing, packet switching, and the development of communications standards for
linking networks and computers
23. The method of slicing digital messages into parcels, transmitting them along different communication paths,
and reassembling them at their destinations is called
A) packet routing.
B) ATM.
C) packet switching.
D) multiplexing.
24. The telephone system is an example of a ________ network.
A) packet–switched
B) wireless
C) peer–to–peer
D) circuit–switched
25. Which of the following is not a characteristic of packet switching?
A) Packets are routed through many different paths.
B) Packets travel independently of each other.
C) Packets include data for checking transmission errors.
D) Packet switching requires point–to–point circuits.
26. In TCP/IP, IP is responsible for
A) sequencing the transfer of packets.
B) establishing an Internet connection between two computers.
C) moving packets over the network.
D) disassembling and reassembling of packets during transmission.
27. In a telecommunications network architecture, a protocol is
A) the main computer in a telecommunications network.
B) a device that handles the switching of voice and data in a local area network.
C) a standard set of rules and procedures for control of communications in a network.
D) a communications service for microcomputer users.
28. What are the four layers of the TCP/IP reference model?
A) application, transport, Internet, and network interface
B) physical, application, transport, and network interface
C) application, hardware, Internet, and network interface
D) physical, application, Internet, and network interface
29. Which signal types are represented by a continuous waveform?
A) laser
B) analog
C) digital
D) optical
30. To use the analog telephone system for sending digital data, you must also use
A) a router.
B) twisted wire.
C) DSL.
D) a modem.
31. Which type of network is used to connect digital devices within a half–mile or 500–meter radius?
A) MAN
B) WAN
C) Wi–Fi
D) LAN
32. Which type of network treats all processors equally, and allows peripheral devices to be shared without
going to a separate server?
A) Windows domain network
B) wireless
C) LAN
D) peer–to–peer
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) WAN
B) Peer–to–peer network
C) Domain–based LAN
D) MAN
34. WSNs are designed for
A) increasing the reach of Wi–Fi networks.
B) tracking the movement of goods in a supply chain.
C) monitoring the physical environment.
D) connecting multiple wireless computing devices.
35. All of the following are physical components of an RFID system except
A) tags.
B) antenna.
C) radio transmitters.
D) bar code.
36. Which digital cellular standard is used widely throughout the world except the United States?
A) CDMA
B) WLAN
C) GSM
D) LTD
37. A network that spans a city, and sometimes its major suburbs as well, is called a
A) WAN.
B) LAN.
C) MAN.
D) CAN.
38. A network that covers entire geographical regions is most commonly referred to as a(n)
A) peer–to–peer network.
B) local area network.
C) intranet.
D) wide area network.
39. The concept of a future Web in which it is commonplace for everyday objects to be connected, controlled or
monitored over the Internet is called
A) Internet2.
B) the Web of things.
C) a 3–D Web.
D) the Semantic Web.
40. Bandwidth is the
A) number of cycles per second that can be sent through a medium.
B) difference between the highest and lowest frequencies that can be accommodated on a single channel.
C) total number of bytes that can be sent through a medium per second.
D) number of frequencies that can be broadcast through a medium.
41. The total amount of digital information that can be transmitted through any telecommunications medium is
measured in
A) Hertz.
B) bps.
C) gigaflops.
D) baud.
42. Digital subscriber lines
A) operate over coaxial lines to deliver Internet access.
B) are very–high–speed data lines typically leased from long–distance telephone companies.
C) have up to twenty–four 64–Kbps channels.
D) operate over existing telephone lines to carry voice, data, and video.
43. T1 lines
A) operate over existing telephone lines to carry voice, data, and video.
B) operate over coaxial lines to deliver Internet access.
C) have up to twenty–four 64–Kbps channels.
D) are high–speed, leased data lines providing guaranteed service levels.
44. Which protocol is the Internet based on?
A) TCP/IP
B) packet–switching
C) FTP
D) HTTP
45. What service converts IP addresses into more recognizable alphanumeric names?
A) IP
B) DNS
C) HTML
D) HTTP
46. The child domain of the root is the
A) second–level domain.
B) top–level domain.
C) domain extension.
D) host name.
47. In the domain name “http://books.azimuth–interactive.com”, which element is the second–level domain?
A) azimuth–interactive
B) com
C) books
D) none; there is no second–level domain in this name
48. Which organization helps define the overall structure of the Internet?
A) none (no one “owns” the Internet)
B) W3C
C) IAB
D) ICANN
49. IPv6 is being developed in order to
A) support Internet2.
B) create more IP addresses.
C) allow for different levels of service.
D) update the packet transmission protocols for higher bandwidth.
50. Which of the following services enables logging on to one computer system and working on another?
A) FTP
B) telnet
C) World Wide Web
D) newsgroups
51. Instant messaging is a type of ________ service.
A) e–mail
B) wireless
C) chat
D) cellular
52. Which of the following statements about RFID is not true?
A) RFIDs require line–of–sight contact to be read.
B) Microchips embedded in RFIDs are used to store data.
C) RFIDs use an antenna to transmit data.
D) RFIDs transmit only over a short range.
53. ________ integrate(s) disparate channels for voice communications, data communications, instant messaging,
e–mail, and electronic conferencing into a single experience.
A) Wireless networks
B) Virtual private networks
C) Intranets
D) Unified communications
54. A VPN
A) is an Internet–based service for delivering voice communications.
B) provides secure, encrypted communications using Telnet.
C) is an encrypted private network configured within a public network.
D) is more expensive than a dedicated network.
55. Web browser software requests Web pages from the Internet using which protocol?
A) DNS
B) HTML
C) URL
D) HTTP