Telecommunication Switching Systems Mid - I, September - 2014

1.The links that run between the switching system are called as
  • Trunks
  • Lines
  • Links
  • None
Answer: A
2.coded values are transferred during the same time interval from input to output, the technique is known as
  • Combination switch
  • Time switch
  • Space switch
  • Automatic
Answer: C
3.Each trunk will carry __________
  • One call
  • two calls
  • three calls
  • four calls
Answer: A
4.In unit of traffic a single trunk cannot carry more than one call when
  • A=1
  • A ≤ 1
  • A ≥ 1
  • A ≠ 1
Answer: B
5.Based on __________ switching networks are divided.
  • Inlets
  • outlets
  • Both A & B
  • None
Answer: C
6.___________ switches are not usually found in telephone switching systems.
  • Triangular
  • electronic
  • Both A & B
  • None
Answer: C
7.One sample duration, 125/M microseconds, is usually referred to as a
  • Interval
  • Time slot
  • Control memory
  • None
Answer: B
8.A piece of work performed by the user is known as
  • Job
  • User
  • Process
  • Processor
Answer: A
9.__________ is defined as the average number of calls originated by a subscriber during the busy hour.
  • Delay rate
  • Loss rate
  • Busy hour calling rate
  • Peak rate
Answer: C
10.Total traffic ‘A’ is carried by ‘ N’ trunks, the occupancy of each trunk is _____
  • A × N
  • A/N
  • A – N
  • A + N
Answer: B
11.The control functions are performed by a computer or processor, and then it is called as _______________.
Answer: Stored program control
12.Networks with point- to - point links among all the entities are known as ___________.
Answer: Fully connected networks
13.The incoming traffic = ____________________.
Answer: Incoming calls × ( avg. time duration of incoming calls) / 60
14.In ______________ systems, the trunks are often called servers.
Answer: Queuing
15._______________ network mainly consists of three stage concentrator networks.
Answer: Three stage
16.This technique interconnecting the multiples of switches is called _____________.
Answer: Grading
17.A crossbar switching with stored programmed control qualifies as __________ exchange.
Answer: Electronic
18.A ______________ is a circuit switched system and its switching network is a lost call system.
Answer: Telephone exchange
19.For a digital signal, the number of signal elements transmitted per second is called___________.
Answer: Signaling rate
20.______________ is a unit of traffic.
Answer: Erlang