Question: Statistically multiplexed WANs are defined by their ability to allocate network resources
Answer Options:
On a dedicated basis
According to defined frequencies
According to needs
According to defined time slots
Answer: According to needs
Question: A signal transduction pathway is initiated when a __ binds to a receptor.
Answer Options:
G-protein
Calmodulin
Ion channel
Cyclic AMP
Answer: G-protein
Question: When a device has data to be delivered over a WAN network
Answer Options:
It stops the existing traffic over the medium to send the data
The data is merged with the existing traffic
None of the above
It waits for the medium to become idle
Answer: The data is merged with the existing traffic
Question: WAN technologies use broadcast
Answer Options:
True
False
Answer: False
Question: From the perspective of the cell receiving the message, the three stages of cell signaling are
Answer Options:
Signal reception, cellular response, and cell division
Signal reception, nucleus disintegration, and new cell generation
Signal reception, signal transduction, and cellular response
Signal reception, cell wall formation, and signal reception
Answer: Signal reception, signal transduction, and cellular response
Question: Compared to point-to-point links, statistically multiplexed WANs improve data link utilization by
Answer Options:
Increasing the number of data intermediates
Increasing the number of end users
Aggregating traffic
Increasing data link capacity
Answer: Aggregating traffic
Question: Confidentiality is
Answer Options:
Guarding against improper information modification or destruction, and includes ensuring information non-repudiation and authenticity
Protecting information and information systems from unauthorized use
Preserving authorized restrictions on access and disclosure, including means for protecting personal privacy and proprietary information Choices
Ensuring timely and reliable access to and use of information
Answer: Preserving authorized restrictions on access and disclosure, including means for protecting personal privacy and proprietary information Choices
Question: ISDN stands for
Answer Options:
Inter-state data network
Improved speed digital networks
Integrated services digital network
Inter-state digital network
Answer: Integrated services digital network
Question: Wide area networks are defined by their ability to
Answer Options:
Operate over high bandwidths
Provide very high data rates
Provide data communication services to large numbers of users
Operate over large distances
Answer: Operate over large distances
Question: The limitations of point-to-point technologies include all of the following except
Answer Options:
Average link utilization can be low
They can be set up easily with phone lines using modems
A very large number of links may become necessary when networks grow in size
They provide very limited opportunities for traffic aggregation
Answer: They can be set up easily with phone lines using modems
Question: When a phone line is used to carry data traffic, the highest data rate possible is
Answer Options:
32 kbps
128 kbps
64 kbps
1.544 mbps
Answer: 1.544 mbps
Question: Integrity is
Answer Options:
Preserving authorized restrictions on access and disclosure, including means for protecting personal privacy and proprietary information Choices
Ensuring timely and reliable access to and use of information
Protecting information and information systems from unauthorized use
Guarding against improper information modification or destruction, and includes ensuring information non-repudiation and authenticity
Answer: Guarding against improper information modification or destruction, and includes ensuring information non-repudiation and authenticity
Question: T-3 is a very popular WAN data service provided by telecom carriers. Its data rate is
Answer Options:
64 kbps
1.544 mbps
2.56 kbps
44.736 mbps
Answer: 44.736 mbps
Question: Wide area networks are defined by their ability to
Answer Options:
Operate over high bandwidths
Provide very high data rates
Provide data communication services to a large number of users
Operate over large distances
Answer: Operate over large distances