What are the three sections of a data pack?
- Payload
- Trailer
- Packet header
What info does the packet header contain?
contains info on the contents of the packet and its final destination
Which part of the data packet is the actual data from the file?
Payload
Why does the data need to be broken down into packets to be transmitted?
Because it’s not possible nor practical to transmit the data from one device to another. Radio waves/wires can’t accommodate it.
What are packet switches networks?
Networks that ship data around in small packets
How many bytes does a typical packets contain?
A typical packet contains perhaps 1,000 or 1,500 bytes.
What four other names do packets get referred to as?
frame
block
cell
segment
What is the process called by which you transmit data through packets?
Packet switching
What is a network?
Computers/devices joined through wireless technology or cables.
What is a router?
a network component that examines data packets to obtain its destination and address, then forwards the packets to this address
What are the five other methods for transmitting data?
- Parallel
- Serial
- Simplex
- Half-duplex
- Full-duplex
What does serial data transmission mean?
when data is sent one bit at a time via a single wire
What does parallel data transmission mean?
when data is sent multiple bits at a time via multiple wires
What does simplex data transmission mean?
data transmitted in one direction only
What does half-duplex transmission mean?
data transmitted in both directions but only one at a time
What does a full-duplex data transmission mean?
data transmitted in both directions at the same time
What is a USB?
Industry standard used to transmit data
What is a USB port?
sockets part of the device or computer which enables you to insert the USB
What is a USB cable?
type of media transmission which allows you to use the USB method
What is a USB connection?
a collective name for using a USB cable to plug into a USB port which transfers data from one device to the other
What is a USB device?
name of the device which plugs into the USB port
What is the ethernet?
another type of data which can transmit data within a network
What are three error detection methods?
- Ecocheck
- Parity check
- Checksum
What is encryption?
a method of securing data for storage of transmission that scrambles it and makes it meaningless
