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Computer Networks → Introduction to Computer Networks 2

_________framing uses two categories of protocols: character-oriented and bit-oriented.
Variable-size
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CRC stands for
cyclic redundancy check
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Computer Networks → Types of Networks 2

In a ________ protocol, the data section of a frame is a sequence of characters.
character-oriented
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Which one of the following is a data link protocol?
all of the above
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Computer Networks → Network Topologies 2

In a _________ protocol, the data section of a frame is a sequence of bits.
bit-oriented
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The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called
piggybacking
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Computer Networks → OSI Reference Model 2

In _________ protocols, we use ________.
character-oriented; byte stuffing
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The data link layer takes the packets from _____ and encapsulates them into frames for transmission.
network layer
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Computer Networks → TCP/IP Model 2

Byte stuffing means adding a special byte to the data section of the frame when there is a character with the same pattern as the ______.
flag
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The maximum size of payload field in Ethernet frame is
1500 bytes
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Computer Networks → Physical Layer 2

In ________ protocols, we use ________.
bit-oriented; bit stuffing
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What is inter-frame gap?
idle time between frames
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Computer Networks → Data Link Layer 2

Bit stuffing means adding an extra 0 to the data section of the frame when there is a sequence of bits with the same pattern as the ________.
Flag
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Error detection at the data link level is achieved by
Cyclic Redundancy Code
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Computer Networks → Network Layer 2

_______ control refers to a set of procedures used to restrict the amount of data that the sender can send before waiting for acknowledgment.
Flow
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"BAUD" rate means
The rate at which the signal changes.
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Computer Networks → Transport Layer 2

______ control refers to methods of error detection and correction.
Error
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Start and stop bits are used in serial communication for
Synchronization
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Computer Networks → Session Layer 2

In a linear block code, the _______ of any two valid codewords creates another valid codeword
XORing
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Unmodulated signal coming from a transmitter is know as
Baseband signal
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Computer Networks → Presentation Layer 2

A simple parity-check code can detect __________ errors.
an odd-number of
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Maximum data rate of a channel for a noiseless 3-kHz binary channel is
6000 bps
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Computer Networks → Application Layer 2

_______codes are special linear block codes with one extra property. If a codeword is rotated, the result is another codeword.
Cyclic
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The ________ measures the number of lost or garbled messages as a fraction of the total sent in the sampling period.
Residual Error Rate.
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Computer Networks → IP Addressing 2

The _____of errors is more difficult than the ______.
correction; detection
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In session layer, during data transfer, the data stream responsible for the "control" purpose (i.e control of the session layer itself) is
Capability Data
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Computer Networks → Subnetting 2

In modulo-11 arithmetic, we use only the integers in the range ______, inclusive.
0 to 10
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Which of the following is not a field in the Ethernet Message packet?
Pin-code
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Computer Networks → Routing Algorithms 2

In modulo-2 arithmetic, we use only ______.
0 and 1
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The Network topology that supports bi-directional links between each possible node is
Mesh
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Computer Networks → Switching Techniques 2

Adding 1 and 1 in modulo-2 arithmetic results in _________.
0
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Which network has connectivity range up to 10 meters?
PAN
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Computer Networks → DNS 2

Which one of the following task is not done by data link layer?
channel coding
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Layer 2 from bottom in TCP/IP is the ___________.
Internet layer
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Computer Networks → HTTP and HTTPS 2

Which sublayer of the data link layer performs data link functions that depend upon the type of medium?
media access control sublayer
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IP address___________ the physical address.
has no relation with
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Computer Networks → FTP and SMTP 2

Header of a frame generally contains
all of the above
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IP makes a __________ of datagram delivery.
best effort
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Computer Networks → Wireless Networks 2

When 2 or more bits in a data unit has been changed during the transmission, the error is called
burst error
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The _________ for all computers on the same physical network is the same.
n/w-id
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