Nt1310 Unit 4 Assignment 2.1 Parity
Assignment 2
1. Parity bit:
A Parity bit is a single bit that is added to the data, during data transmission for error checking or data loss that may have occurred. The parity bit is either zero or one.
2. Internet checksum : 0A BC 78 9F 85 7E 5D BC.
Data at Sender: 0A BC 78 9F 85 7E 5D BC 00 00
Partial sum 0ABC + 789F
---------
835B_
Partial sum 835B + 857E --------- 108D9
Carry 08D9 + 1 -------- 08DA
Partial Sum 08DA + 5DBC --------- 6696
One’s Complement 9969
(a) Check sum calculation at sender
Data at receiver: 0A BC 78 9F 85 7E 5D BC 9969
Partial sum 0ABC + 789F
---------
835B_
Partial sum …show more content…
i.e multiple signals are carried simultaneously on the same medium, by allocation each signal with different frequency band, by modulation. Multiplexing and modulation need different equipment, to do their jobs. They are used with analog signals.
Time Division Multiplexing:
It is a method of transmitting multiple signals, which differ in their timeslots, by allocating frames. i.e data is carried in repetitive blocks called frames, where each frame has a set of timeslots and each source is assigned to one or more timeslots. They are used with analog and digital signals.
Frequency Division Multiplexing (FDM) vs Frequency Division Duplex(FDD):
In FDM, the way of sharing the medium with multiple users, transmitting and receiving at the same time, with different frequency.
In FDD, is focused on single user, with transmission and reception on different frequency, on same time.
5. Division in spectrum of cable modems:
Cable modem handling upstream and downstream data, for each channel:
Spectrum of cable modems is divided into 3 ranges, to support both cable television programming and data channels.
- User to network data(upstream): 5 – 40 MHz
- Television delivery(downstream): 50- 550 MHz
- Network to user
1. Parity bit:
A Parity bit is a single bit that is added to the data, during data transmission for error checking or data loss that may have occurred. The parity bit is either zero or one.
2. Internet checksum : 0A BC 78 9F 85 7E 5D BC.
Data at Sender: 0A BC 78 9F 85 7E 5D BC 00 00
Partial sum 0ABC + 789F
---------
835B_
Partial sum 835B + 857E --------- 108D9
Carry 08D9 + 1 -------- 08DA
Partial Sum 08DA + 5DBC --------- 6696
One’s Complement 9969
(a) Check sum calculation at sender
Data at receiver: 0A BC 78 9F 85 7E 5D BC 9969
Partial sum 0ABC + 789F
---------
835B_
Partial sum …show more content…
i.e multiple signals are carried simultaneously on the same medium, by allocation each signal with different frequency band, by modulation. Multiplexing and modulation need different equipment, to do their jobs. They are used with analog signals.
Time Division Multiplexing:
It is a method of transmitting multiple signals, which differ in their timeslots, by allocating frames. i.e data is carried in repetitive blocks called frames, where each frame has a set of timeslots and each source is assigned to one or more timeslots. They are used with analog and digital signals.
Frequency Division Multiplexing (FDM) vs Frequency Division Duplex(FDD):
In FDM, the way of sharing the medium with multiple users, transmitting and receiving at the same time, with different frequency.
In FDD, is focused on single user, with transmission and reception on different frequency, on same time.
5. Division in spectrum of cable modems:
Cable modem handling upstream and downstream data, for each channel:
Spectrum of cable modems is divided into 3 ranges, to support both cable television programming and data channels.
- User to network data(upstream): 5 – 40 MHz
- Television delivery(downstream): 50- 550 MHz
- Network to user