What is the first octet range for a class A IP address?
1 - 126
192 - 255
192 - 223
1 - 127
Q.2.
CSMA (Carrier Sense Multiple Access) is
a method of determining which device has access to the transmission medium at any time
a method access control technique for multiple-access transmission medi
a very common bit-oriented data link protocol issued by ISO.
network access standard for connecting stations to a circuit-switched network
Q.3.
Let G(x) be the generator polynomial used for CRC checking. What is the condition that should be satisfied by G(x) to detect odd number of bits in error?
G(x) contains more than two terms
G(x) does not divide 1+x^k, for any k not exceeding the frame length
1+x is a factor of G(x)
G(x) has an odd number of terms.
Q.4.
In Ethernet when Manchester encoding is used, the bit rate is:
Half the baud rat
Twice the baud rat
Same as the baud rat
none of the above
Q.5.
Station A needs to send a message consisting of 9 packets to Station B using a sliding window (window sizeand go-back-n error control strategy. All packets are ready and immediately available for transmission. If every 5th packet that A transmits gets lost (but no acks from B ever get lost), then what isthe number of packets that A will transmit for sending the message to B?
12
14
16
18
Q.6.
Determine the maximum length of the cable (in km) for transmitting data at a rate ofMbps in an Ethernet LAN with frames of size 10,bits. Assume the signal speed in the cable to be 2,00,km/s.
1
2
2.5
5
Q.7.
In serial data transmission, every byte of data is padded with a ‘in thebeginning and one or two ‘s at the end of byte because
Receiver is to be synchronized for byte reception
Receiver recovers lost ‘0’ and ‘1’s from these padded bits
Padded bits are useful in parity computation
None of these
Q.8.
In serial data transmission, every byte of data is padded with a ‘in thebeginning and one or two ‘s at the end of byte because
Receiver is to be synchronized for byte reception
Receiver recovers lost ‘0’ and ‘1’s from these padded bits
Padded bits are useful in parity computation
None of these
Q.9.
ARP (Address Resolution Protocol) is
a TCP/IP protocol used to dynamically bind a high level IP Address to a lowlevel physical hardware address
a TCP/IP high level protocol for transferring files from one machine to another
a protocol used to monitor computers
a protocol that handles error and control messages
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