3D1X1 Volume 2 Unit 1 Flashcards
What’s the range a human ear can detect sound
20 Hz to 20 kilohertz kHz
Describe black body radiation
The hotter the object the more energy it radiates
How many ports can the DMS-100 and the MSL-100 support?
DMS-100 = 100,000 MSL-100 = 30,000
What is peripheral module
It connects/interface to subscriber lines, test/service trunks, analog/digital trunk facilities
What is maintenance and administrative position (MAP)
(Maintenance) Designed to detect and analyze system faults and is responsible for hardware and software resources of the DSS
What are the three elements that make up the superNode ?
1 computing modules (cm)
2 system load modules (slm)
3 message switches (sw)
What is the DMS core ?
Provides the processing power for the superNode it handles system integrity, maintenance, and the loading and downloading of software. It is expandable and can be upgraded
What is the digital signal 30 (DS30)
It is a interface among components of the superNode. 30 channels 2.56 MBps
What is digital signal 512 (DS512)
Standard for internal optical fiber links within the superNode.
What are the characteristics of analog signal?
1 smooth and continuous with no abrupt changes in direction
2 has an amplitude of any value depending on the signal
3 changes value all the time
What are the characteristics of digital signal
1 is sharp, abrupt changes in direction
2 the amplitude has a set of fixed values
3 it holds a value throughout a fixed period of time
What is band limiting ?
Established the highest and lowest frequency encoded.
What is sampling
Converting a continuous time signal into discrete time signal
What is time division multiplexing (TDM)
The process of combining two or more independent channels of intelligence into a composite signal where each channel is separated by time
What is ISDN ?
A data comm network that provides universal end to end connectivity. Combines voice and data iverthesanw wires because it is a regular phone line.
What is the transmission rate of a ISDN LINE ?
144 Kbpa
What is OSI model layer one?
The physical layer
What is OSI model layer two ?
Data link
What is OSI model layer three
Network
What is OSI model layer four
Transport
What is OSI model layer five
Session
What is OSI model layer six
Presentation
What is OSI model layer seven
Application
What is ICAP (integrated services digital network)?
Pert of a tactical comm systems that is deployed as a war fighting capability
