(A) Karachi
(B) Lahore
(C) Islamabad
(D) Quetta
If the data rate of ring is 20 Mbps signal propagation speed is 200 m/us then the number of bits that can be placed on the channel of 200 km is:
(A) 2000 bits
(B) 20000 bits
(C) 1000 bits
(D) none of the above
In a broad sence a railway track is an example of:
(A) simplex
(B) half-duplex
(C) full-duplex
(D) all of the above
The network topology that supports bi-directional links between each possible node is:
(A) ring
(B) star
(C) tree
(D) mesh
Which of the following is not a field in Eathernet message packet:
(A) Type
(B) Data
(C) Pin-code
(D) Address
Which of the following ISO level is more closely related to the physical communication facilities:
(A) Application
(B) Session
(C) Network
(D) Data link
A high speed communication equipment typically would not be needed for:
(A) E-mail
(B) Transfering large volume of data
(C) supporting communication between noded in LAN
(D) all of the above
Which of the following is not a Standard RS-232C signal:
(A) RTS
(B) CTS
(C) DSR
(D) VDR