Which of the following is not true about de facto standards?
A. They never evolve into de jure standards.
B. They are those standards that emerge in the marketplace.
C. They tend not to be developed by an official industry or government body.
D. They are generally supported by more than one vendor but de facto standards have
no official standing.
E. They tend to emerge based upon the needs/response of the marketplace. - Answer
A. They never evolve into de jure standards.
A(n) ___________ is similar to an intranet in that it uses Internet technologies, but is
developed for users outside the organization.
A. intranet
B. Usenet
C. Wide Area Network
D. Extranet - Answer D. Extranet
Due to recent advances in high speed communication networks, the information lag, or
the time it takes for information to be disseminated around the world, has been
significantly shortened.
(T/F) - Answer True
Which of the following is not an important future trend in communication and
networking?
A. development of online batch systems
B. integration of voice, video, and data
C. pervasive networking
D. provision of new information services on rapidly expanding networks
E. development of extremely high speed broadband networks - Answer A. development
of online batch systems
___________ is an orderly close to a dialogue between end users.
A. Session termination
B. Physical bits
C. Frame overhead
D. Packet encapsulation
E. Message encryption - Answer A. Session termination
Which of the following is not a property of a WAN:
, A. connects backbone networks and MANS.
B. spans hundreds or thousands of miles
C. provides data transmission speeds from 56Kbps to 10Gbps.
D. connects a group of computers in a small geographic area such as room, floor,
building or campus.
E. uses leased lines from IXCs like ATT, MCI, and Sprint. - Answer D. connects a group
of computers in a small geographic area such as room, floor, building or campus.
A local area network (LAN) connects other LANs and BNs located in different areas to
each other and to wide area networks in a span from 3 to 30 miles.
(T/F) - Answer False
Which standards body is responsible for the development of local area network (LAN)
standards?
A. ANSI
B. ISO
C. IETF
D. IEEE
E. ITU-T - Answer D. IEEE
Which of the following is a function of the transport layer?
A. linking the physical layer to the network layer
B. formatting messages by indicating where they start and end
C. deciding which route the message should take
D. breaking long messages into several smaller messages
E. specifying the type of connection and the electrical signals, radio waves, or light
pulses that pass through it - Answer D. breaking long messages into several smaller
messages
One perspective of data communications and networking as stated in the textbook,
examines the management of networking technologies, including security, network
design, and managing the network on a day-to-day basis and long term basis.
(T/F) - Answer True
In a client-server network, _________ gets software from different vendors to work
together.
A. a front-end processor
B. serverware
C. middleware
D. centerware
E. programmer - Answer C. middleware
The earliest data communications networks were client-server networks.