What is the full form of STD?
A. Subsidised Trunk dialling
B. Subscriber Trunk Dialling
C. State Trunk Dialing
D. Subsidy Trunk Dialing
Answer:B
What is the full form of STD?
A. Subsidised Trunk dialling B. Subscriber Trunk Dialling C. State Trunk Dialing D. Subsidy Trunk Dialing