Bandwidth Allocations
What bandwidth allocation gives each user a fixed bandwidth making it the most predictable but least effective?
Conventional.
In EIA -232C standard what is denoted by the number on DD-50 connector?
The number of pins.
What is an UNBALANCED transmission medium that consist of a copper core, a dielectric, an outer threaded metal sheath, and a rubber coating?
Coaxial Cable.
What device can operate alongside a DSU and is responsible for policing one’s density on a network and connects to the telecommunications network?
CSU (Channel Service Unit).
What level of the digital network hierarchy system supports 672 users?
DS3/T3.
Having dedicated bandwidth during a specific slot of time is an example of what type of bandwidth allocation method?
Time of Day Restriction.
What EIA standard was developed in response to the disadvantages of EIA-449 and has a 25-pin D connector?
EIA-530.
What transmission medium eliminates the need for cabling each user to the network but is more susceptible to interception?
Wireless.
What are the devices that connect two DTE devices on a network?
DCE (Data Communications Equipment).
What level of the digital network hierarchy system provides a maximum data rate of 1.544 MBPs?
DS1/T1.
Which method has a combined data rate of user inputs that exceeds the total bandwidth that the network can support?
Dynamic.
What EIA standard was is the oldest standard developed for serial communications?
EIA-232C.
What transmission medium uses two conductors wrapped around each other 180 degrees out of phase?
Twisted Pair.
What represents the user or “node” on both sides of a network?
DTE (Data Terminal Equipment).
How many channels (users) can a DS4/T4 support?
4032 channels (users).
Which method provides NO dedicated channels to specific users and instead provides bandwidth only on an “as-needed” basis?
Demand Assigned.
In EIA-232C for data rates of 9.6 Kbps what is the direct wire limit?
500-5,000 feet.
What transmission medium supports higher data rates and speed, is immune to the effects of EMI, but is very fragile?
Fiber Optics.
What device can operate alongside the CSU and is responsible for managing the interface with the DTE?
DSU (Digital Service Unit).
What data rate does a DS2/T2 provide?
6.312 Mbps.