Timing
What is the oldest and least efficient timing standard?
Apparent Solar Time
Which synchronization technique has a "single point of failure"?
Master Clock.
When the combined data rates of user inputs exceed the total bandwidth that a network can support, the system is said to be ____________ allocating bandwidth.
Dynamically.
This transmission media is considered balanced as the same signal is transmitted over two wires, 180 degrees out of phase.
Twisted Pair
This band has the largest frequency span and sits in the 27-40 GHz range.
Ka Band
What is the most stable and reliable timing reference and what are the two we went over?
Atomic oscillators. Cesium beam and rubidium gas.
This synchronization technique is the most robust due to the redundancy of higher subordinate nodes.
Master Slave.
This bandwidth allocation is the first developed and assigns a fixed amount of bandwidth to it's users making it the most predictable but least efficient.
Conventional.
A major disadvantage of this transmission media is time delay.
Wireless.
This band is used on the DSCS, WGS, and NATO Satellite constellations.
X Band
What type of timing standards are used in watches and utilize the piezoelectric effect?
Quartz oscillators.
This synchronization technique is hierarchical in nature.
Master Slave.
This bandwidth allocation technique has issues if all users decide to transmit at the same time.
Dynamic.
This transmission media can send either a baseband or broadband signal over just one input/output wire while the second wire is grounded.
Coaxial Cable/Unbalanced.
This band has extremely high atmospheric attenuation and is not useful for long distance communication.
K Band.
What is the clock frequency of a rubidium oscillator?
6.384 GHz.
This synchronization technique does not require synchronization between nodes as each station has supplies it's own highly stable clock.
Plesiochoronous.
This bandwidth allocation technique ensures enough bandwidth is set aside for a specific date and time on a priority basis.
Time-Of-Day Restriction.
This transmission media is immune to the effects of of EMI due to it using light instead of electricity.
This band is used for commercial purposes and lies within the 4-8 Ghz Range
C Band
What is the drift of a Cesium Beam Oscilator?
200 nanoseconds in 24 hours.
Which synchronization technique averages clock data collected from all nodes together so that all stations can operate off the same clock frequency?
This bandwidth allocation technique does not dedicate any of it's channels to a specific user. Bandwidth is allocated on an as needed basis in the exact amount needed.
Demand Assigned.
This transmission media increases in category as it's maximum data rate increases.
Twisted Pair.
This band is used for digital television, radio astronomy, and radio navigation.
Ku Band