Question: Signal molecules that are water soluble ___________. Check all that apply.
Answer Options:
Are always large
Have polar or charged components
Are only able to pass through the plasma membrane by active transport
Bind to specific sites on receptor proteins in a membrane
Answer: Have polar or charged components
Bind to specific sites on receptor proteins in a membrane
Question: The earliest wide area data networks were built using
Answer Options:
X.25
ATM
T-carriers
Phone lines
Answer: Phone lines
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: The phone network offers a
Answer Options:
FDM WAN service
None of the above
Point-to-point network service
Statistically multiplexed network service
Answer: Point-to-point network service
Question: Which of the following is true of synaptic signaling and hormonal signaling? Check all that apply.
Answer Options:
Hormone travel over long distance
Both nervous signaling and hormone signaling work through gap junctions
Both nervous signaling and hormone signaling act on target cells
Answer: Hormone travel over long distance
Both nervous signaling and hormone signaling act on target cells
Question: Availability is
Answer Options:
Ensuring timely and reliable access to and use of information
Protecting information and information systems from unauthorized use
Answer: Ensuring timely and reliable access to and use of information
Question: In data communications, a virtual circuit
Answer Options:
Cannot really carry data
Is another name for the NASCAR circuit
Is another name for a circuit
Can carry data over various real circuits
Answer: Can carry data over various real circuits
Question: Which of the following are chemical messengers that pass through the plasma membrane of cells and have receptor molecules in the cytoplasm? Check all that apply.
Answer Options:
Testosterone
Insulin
Nitric oxide
Answer: Testosterone
Nitric oxide
Question: A virtual circuit ID is assigned to
Answer Options:
Each source-destination pair
Each destination
Each source
Each autonomous system
Answer: Each source-destination pair
Question: T-1 is the simplest WAN data service provided by telecom carriers. It has a data rate of
Answer Options:
64 kbps
1.544 mbps
2.56 kbps
44.736 mbps
Answer: 1.544 mbps
Question: WAN technologies use broadcast
Answer Options:
True
False
Answer: False