Which of the following is an application layer service?
A) Network virtual terminal
B) File transfer, access and management
C) Mail service
D) All of the above

Which is the main function of transport layer?
A) Node to node delivery
B) End to end delivery
C) Synchronization
d) Updating and maintaining routing tables

The ............. layer change bits onto electromagnetic signals.
A) Physical
B) Transport
C) Data Link
D) Presentation

In mesh topology, relationship between one device and another is ..............
A) Primary to peer
B) Peer to primary
C) Primary to secondary
D) Peer to Peer

The performance of data communications network depends on ..............
A) Number of users
B) The hardware and software
C) The transmission
D) All of the above

Find out the OSI layer, which performs token management.
A) Network Layer
B) Transport Layer
C) Session Layer
D) Presentation Layer

The name of the protocol which provides virtual terminal in TCP/IP model is.
A) Telnet
B) SMTP
C) HTTP

The layer one of the OSI model is
A) Physical layer
B) Link layer
C) Router layer
D) Broadcast layer

What is the name of the network topology in which there are bi-directional links between each possible node?
A) Ring
B) Star
C) Tree
D) Mesh

What is the commonly used unit for measuring the speed of data transmission?
A) Bytes per second
B) Baud
D) Both B and C

Which of the communication modes support two way traffic but in only once direction of a time?
A) Simplex
B) Half-duplex
C) Three - quarter's duplex
D) Full duplex