Telephone networks are fundamentally different from computer networks.
True
Wikis allow visitors to change or add to the original posted material.
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
A computer network consists of at least three computers.
False
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
Two computers using TCP/IP can communicate even if they are based on different hardware and software platforms.
True
Over 80% of U.S. Internet users access the Internet via mobile devices.
False
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 IP addresses to domain names.
False
VoIP technology delivers voice information in digital form using packet switching.
True
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
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 locate other computers on the Internet
False
Mobile search makes up 20% of all Internet searches.
True
RFID technology is being gradually replaced by less costly technologies such as WSNs.
False
The Internet is based on which three key technologies?
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
packet switching
The device that acts as a connection point between computers and can filter and forward data to a specified destination is called a(n)
switch.
The telephone system is an example of a ________ network.
circuit-switched
Which of the following is not a characteristic of packet switching?
Packet switching requires point-to-point circuits.
In TCP/IP, IP is responsible for
disassembling and reassembling of packets during transmission.
In a telecommunications network architecture, a protocol is
a standard set of rules and procedures for control of communications in a network.
What are the four layers of the TCP/IP reference model?
application, transport, Internet, and network interface
Which signal types are represented by a continuous waveform?
analog
To use the analog telephone system for sending digital data, you must also use
a modem.
Which type of network is used to connect digital devices within a half-mile or 500-meter radius?
LAN
Which type of network treats all processors equally, and allows peripheral devices to be shared without going to a separate server?
peer-to-peer
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?
Peer-to-peer network
WSNs are designed for
monitoring the physical environment
All of the following are physical components of an RFID system except
bar code.
A network that spans a city, and sometimes its major suburbs as well, is called a
MAN.
A network that covers entire geographical regions is most commonly referred to as a(n)
wide area network
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
the Web of things.
Bandwidth is the
difference between the highest and lowest frequencies that can be accommodated on a single channel.
The total amount of digital information that can be transmitted through any telecommunications medium is measured in
bps
Digital subscriber lines
operate over existing telephone lines to carry voice, data, and video.
T1 lines
are high-speed, leased data lines providing guaranteed service levels.
Which protocol is the Internet based on?
TCP/IP
What service converts IP addresses into more recognizable alphanumeric names?
DNS
The child domain of the root is the
top-level domain.
Which organization helps define the overall structure of the Internet?
IAB
Which of the following services enables logging on to one computer system and working on another?
telnet
Instant messaging is a type of ________ service.
chat
Which of the following statements about RFID is not true?
RFIDs require line-of-sight contact to be read.
________ integrate(s) disparate channels for voice communications, data communications, instant messaging, e-mail, and electronic conferencing into a single experience.
Unified communications
A VPN
is an encrypted private network configured within a public network.
Web browser software requests Web pages from the Internet using which protocol?
HTTP
Together, a protocol prefix, a domain name, a directory path, and a document name, are called a(n)
uniform resource locator.
Web sites that enable users to share information, collaborate, and create new services and content are called ________ sites.
Web 2.0, second generation
Making web more "intelligent" and intuitive, increased cloud computing & mobile computing
Web 3.0
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