Computer-Networks
March 6, 2024
Question 3724 – Data-Communication
March 6, 2024
Computer-Networks
March 6, 2024
Question 3724 – Data-Communication
March 6, 2024

Data-Communication

Question 13
Which interim standard describes inter-switching networking ?
A
IS – 54
B
IS – 95
C
DS – 45
D
ANSI – 41
Question 13 Explanation: 
→ Interim Standard 95 (IS-95) was the first ever CDMA-based digital cellular technology.
→ The IS-95 standards describe an air interface, a set of protocols used between mobile units and the network.
→ IS-95 is widely described as a three-layer stack, where L1 corresponds to the physical (PHY) layer, L2 refers to the Media Access Control (MAC) and Link-Access Control (LAC) sublayers,
and L3 to the call-processing state machine.
Correct Answer: B
Question 13 Explanation: 
→ Interim Standard 95 (IS-95) was the first ever CDMA-based digital cellular technology.
→ The IS-95 standards describe an air interface, a set of protocols used between mobile units and the network.
→ IS-95 is widely described as a three-layer stack, where L1 corresponds to the physical (PHY) layer, L2 refers to the Media Access Control (MAC) and Link-Access Control (LAC) sublayers,
and L3 to the call-processing state machine.

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