WorksheetsYear 10 IGCSE Revision - Unit 2 Data Transmission
Total questions: 20
Worksheet time: 7mins
How many bus lines are used in serial transmission?
1
2
3
4
Why is parallel data transmission generally only used over short distances?
It is too expensive over longer distance
It is too complicated over longer distance
There is a higher chance of error over longer distance
There is a lower chance of delivery over longer distance
A standard baby monitor would be an example of what?
Simplex Data Transmission
Half Duplex
Full Duplex / Duplex
A 2 way police radio would be an example of what?
Simplex Data Transmission
Half Duplex Data Transmission
Duplex Data Transmission
Which error checking method involves counting the number of 1s to find whether it is even or odd?
Check digit
Checksum
Echo Check
Parity Check
Would the byte 10001111 pass an even parity check?
Yes
No
Which is a disadvantage of parity checking?
We cannot locate where the error is
It takes a long time to calculate
It can only be done once
It is expensive to design
An echo check involves...
...counting the number of odd digits in a sequence
...requesting a copy of sent data from the receiver and comparing it with the original
...calculating the last number
...waiting for a timeout
How does an ARQ check work?
The sender resends the data if it does not receive confirmation after a certain amount of time
The sender compares the sent data to the original and sees if an error occurred
The receiver checks with the sender to find out whether the data was sent correctly
The sender checks whether the receiver has received the data by performing a calculation on a check digit
Data transmission can transmit data like
text, audio
images, video
both a and b
__________ transmission enables moving data bit by bit
Full duplex
Asynchronous
Parallel
Serial
Telephone is an example of ______________
Half Duplex
Full Duplex
Simplex
a and b
_________________ is Perfect for transmitting over longer distances as there are no synchronisation issues
Serial
Parallel
Multiple bits are sent simultaneously down different wires (channels) within the same cable
MIDI Interface
Serial
Parallel
Lower costs but also slower speed of transmission
Serial
Parallel
Data is synchronised by a clock
Synchronous Serial
Asynchronous Serial
Parallel
Over long distances synchronization errors may start to occur
Serial
Parallel
Used to connect peripheral devices
Asynchronous serial transmission
Synchronous parallel transmission
USB
Both a & c
Select all the correct statements:
The IP address of a device is fixed by the hardware manufacturer.
The MAC address of a device is fixed by the hardware manufacturer.
MAC addresses are used to ensure node-to-node transmission of a data frame (in the Link Layer)
MAC addresses is a 12-digit hexadecimal number.
An IP address is a 12-digit decimal number
What's the primary purpose of a router?
Deliver packets to PC's on local segments.
It controls the data flow of Layer 2 addresses.
It provides Layer 2 address data segmentation.
Deliver packets to different networks using the best available path.
