Chapter 7 Flashcards
Telephone networks are fundamentally different from computer networks.
True
Increasingly, voice, video, and data communications are all based on Internet technology.
True
To create a computer network, you must have at least two computers.
True
An NOS must reside on a dedicated server computer in order to manage a network.
False
A hub is a networking device that connects network components and is used to filter and forward data to specified destinations on the network.
False
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.
True
Central large mainframe computing has largely replaced client/server computing.
False
Circuit switching makes much more efficient use of the communications capacity of a network than does packet switching.
False
Mobile search makes up approximately 10% of all Internet searches.
False
Two computers using TCP/IP can communicate even if they are based on different hardware and software platforms.
True
In blogging, a trackback is a list of entries in other blogs that refer to a post in the first blog.
True
Coaxial cable is similar to that used for cable television and consists of thickly insulated copper wire.
True
Fiber-optic cable is more expensive and harder to install than wire media.
True
The number of cycles per second that can be sent through any telecommunications medium is measured in kilobytes.
False
The Domain Name System (DNS) converts domain names to IP addresses.
True
VoIP technology delivers voice information in digital form using packet switching.
True
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.
True
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.
True
TCP/IP was developed in the 1960s to enable university scientists to transmit data from computer to computer.
False
RFID technology is being gradually replaced by less costly technologies such as WSNs.
False
) 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.
B) Switch
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
C) Client/server computing, packet switching, and the development of communications standards for linking networks and computers.
The method of slicing digital messages into parcels, transmitting them along different communication paths, and reassembling them at their destinations is called:
A) multiplexing.
B) packet switching.
C) packet routing.
D) ATM.
B) packet switching
24) The telephone system is an example of a ________ network.
A) peer-to-peer
B) wireless
C) packet-switched
D) circuit-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.
C) Packet switching required point-to-point circuits.
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.
A) disassembling and reassembling of packets during transmission
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.
B) a standard set of rules and procedures for control of communications in a 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
C) Application, transport, Internet, and network interface
29) Which signal types are represented by a continuous waveform?
A) Laser
B) Optical
C) Digital
D) Analog
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.
A) a modem.
