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50 terms

ISYS Ch 6

STUDY
PLAY
in a telecommunications network architecture, a protocol is
a standard set of rules and procedures for control of communications in a network
bluetooth can be used to link up to ________ devices within a 10-meter area using low-power, radio based communication
eight
which signal types are represented by a continuos waveform?
analog
the child domain of the root is the
top-level domain
which of the following services enables logging on to one computer system and working on another?
telnet
digital subscriber lines
operate over existing telephone lines to carry voice, data, and video
what are the four layers of the TCP/IP reference model?
application, transport, internet, and network interface
T lines:
are high-speed, leased data lines providing gaurenteed service levels
IPv6 is being developed in order to:
create more IP addresses
which protocol is the internet based on?
TCP/IP
the total amount of digital information that can be transmitted through any telecommunications medium is measured in:
bps
the method of slicing digital messages into parcels, transmitting them along different communications paths, and reassembling them at their destinations is called
packet switching
the Wi-Fi 802.11a standard can transmit up to:
54 Mbps in the 5-GHz frequency range
which type of network treats all processors equally, and allows peripheral devices to be shared without going to a separate server?
Peer-to-Peer
To use the analog telephone system for sending digital data, you must also use:
a modern
One or more access points positioned on a ceiling, wall, or other strategic spot in a public place to provide maximum wireless coverage for a specific area are referred to as
hotspots
Together, a protocol prefix, a domain name, a directory, and a document name, are called a
uniform resource locator
the most common web server today, controlling 46 percent of the market, is:
Apache HTTP Server
the process of employing techniques to help a web site achieve a higher ranking with the major search engines is called
SEO
all network components connect to a single hub in a ____________ topology
star
which of the following is not a characteristic of packet switching
packet switching requires point-to-point circuits
instant messaging is a type of_______ service
chat
_______ works by using radio waves to communicate with radio antennas placed within adjacent geographic
cell phones
which organization helps define the overall structure of the internet?
IAB
what sevice converts IP addresses into more recognizable alphanumeric names?
DNS
passive RFID tags
have a range of several feet
In a bus network
signals are broadcast in both directions to the entire network
Which of the following statements is not true about search engines
there are hundreds of search engines vying for user attention, with no clear leader having yet emerged
Bandwidth is the:
difference between the highest and lowest frequencies that can be accommodated on a single channel
the device that acts as a connection point between computers and can filter and forward data to a specified destination is called a
switch
the IEEE standard for the WiMax is
IEEE 802.16
a VPN
is an encrypted private network configured within a public network
web browser software requests web pages from the internetusing which protocol
HTTP
what technology allows people to have content pulled from web sites and fed automatically to their computers
RSS
based on your reading of the examples in the chapter, what would be the best use of RFID for a business?
Logging transactions
the telephone system is an example of a ________ network
circuit-switched
the WiMax standard can transmit up to a distance of approximately
30 miles
in TCP/IP, IP is responsible for
disassembling and reassembling of packets during transmission
which type of network is used to connect digital devices within a half-mile or 500-meter radius?
LAN
the most common Ethernet topology is:
bus
which of the following is the first generation of cellular systems suitable for wireless broadband internet access?
3G
CDMA
transmits over several frequencies
the most appropriate wireless networking standard for creating PANs is
bluetooth
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 need in some cases for empoyees to have access to sexually explicit material on the internet, such as medical researchers, suggests that companies
need to base their internet use policies on the needs of the organization and culture
_______ integrate(s) disparate channels for voice communications, data communications, instant ,messaging, e-mail, and electronic conferencing into a single experience
unified communications
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
A network that spans a city, and sometimes its major suburbs as well, is called a
MAN
in the domain name "http://myspace.blogging.com", what are the root, top-level, second-level, and third-level domains, respectively?
".",com, blogging, myspace
a network that covers entire geographical regions is most commonly referred to as a
wide area network