ONE chapter 1 Protocol has the following a. timing, semantics, syntax b. timing,
ID: 3578543 • Letter: O
Question
ONE
chapter 1
Protocol has the following
a. timing, semantics, syntax
b. timing, syntax, semaphore
c. syntax, semaphore, logic
d. syntax, tunnel, semantics
TWO
chapter 2
the data link layer creates:
a. sessions
b. bits
c. packets
d. frames
THREE
chapter 4
If the 2B/1Q output is +3 +1 -1 -1,
the original bitstring is
a. 01101010
b. 01101000
c. 01001000
d. 01011000
FOUR
chapter 6
Which is an analog multiplexing method that combines optical signals:
a. FDM
b. OFDM
c. TDM
d. WDM
FIVE
chapter 7
Category 6 UTP has data rates up to
a. 200 Mbps
b. 600 Mbps
c. 100 Mbps
d. 1200Mbps
SIX
chapter 10
If the original data is 1000, the Hamming (7,4) word would be:
a. 1110000
b. 1010000
c. 1111000
d. 1101000
SEVEN
ch13
Standard Ethernet CRC size is
a. 2 bytes
b. 4 bytes
c. 6 bytes
d. 8 bytes
EIGHT
ch14
If the Bluetooth data size is 1490 bits, then how many slots?
a. one
b. two
c. three
d. four
NINE
ch19
the IP address 201.25.66.99 is class:
a. A
b. B
c. C
d. D
TEN
ch20
which of the following is NOT a correct Next Header code for IPV6
a. code 88 Destination option
b. code 17 UDP
c. code 50 Encrypted Security Payload
d. code 0 hop-by-hop option
ELEVEN
chapter 30
An AES key size could be
a. 64 bits
b. 128 bits
c. 1024 bits
d. 2048 bits
TWELVE
ch31
Message integrity includes:
a. message integrity, message authentication, message protocol
b. message keyspace, message nonrepudiation, message confidentiality
c. message confidentiality, message integrity, message authentication
d. message authentication, message integrity, message transaction
Explanation / Answer
One. A protocol is a set of rules that governs data communication. The essential elements of it are timing, semantics and syntax. Hence option a. is correct.
Two. Application layer creates messages, transport layer creates segments, network layer creates datagrams and data link layer creates frames. Hence option d. is correct.
Three. Option a. is correct because this option has last two bits identical to previous two bits. (For -1 and -1)
Four. Option d. Is correct. WDM that is wavelength division multiplexing is used in fibre optics
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