31. _________ Layer is responsible for Framing, Error Detection and Physical Addressing.
a) Network
b) Transport

c) Application
d) Data Link

32. _________ is the process of detecting and correcting the error. While ______ is amechanism to ensure the efficient delivery of Data.
a) Error control, Flow control
b) Process control, Network control
c) Session control, Flow control
d) OSI Control, Data control

33. How many layers are there in the Open Systems Interconnection (OSI) model?
a) Eight
b) Seven
c) Six
d) Five

34. Which is the first layer of the OSI Model?
a) Transport Layer
b) Presentation Layer
c) Physical Layer
d) Data Link Layer