Telephone networks are fundamentally different from computer networks.
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An NOS must reside on a dedicated server computer in order to manage a network.
A hub is a networking device that connects network components and is used to filter and forward data to specified destinations on the network.
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.
A computer network consists of at least three computers.
Central large mainframe computing has largely replaced client/server computing
Circuit switching makes much more efficient use of the communications capacity of a network than does packet switching
Two computers using TCP/IP can communicate even if they are based on different hardware and software platforms.
Over 80% of U.S. Internet users access the Internet via mobile devices.
Coaxial cable is similar to that used for cable television and consists of thickly insulated copper wire.
Fiber-optic cable is more expensive and harder to install than wire media
The number of cycles per second that can be sent through any telecommunications medium is measured in kilobytes
The Domain Name System (DNS) converts IP addresses to domain names.
VoIP technology delivers voice information in digital form using packet switching.
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
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.
TCP/IP was developed in the 1960s to enable university scientists to locate other computers on the Internet
Mobile search makes up 20% of all Internet searches.
RFID technology is being gradually replaced by less costly technologies such as WSNs.
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
The device that acts as a connection point between computers and can filter and forward data to a specified destination is called a(n)
The telephone system is an example of a ________ network.
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?
To use the analog telephone system for sending digital data, you must also use
Which type of network is used to connect digital devices within a half-mile or 500-meter radius?
Which type of network treats all processors equally, and allows peripheral devices to be shared without going to a separate server?
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?
WSNs are designed for
monitoring the physical environment
All of the following are physical components of an RFID system except
A network that spans a city, and sometimes its major suburbs as well, is called a
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
Digital subscriber lines
operate over existing telephone lines to carry voice, data, and video.
are high-speed, leased data lines providing guaranteed service levels.
Which protocol is the Internet based on?
What service converts IP addresses into more recognizable alphanumeric names?
The child domain of the root is the
Which organization helps define the overall structure of the Internet?
Which of the following services enables logging on to one computer system and working on another?
Instant messaging is a type of ________ service.
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.
is an encrypted private network configured within a public network.
Web browser software requests Web pages from the Internet using which protocol?
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