Chapter 5 (Networks) Flashcards
How do computers operate in order to connect to a network?
They operate using standard protocols.
What is protocol?
Rules that allow the exchange and transmission of data between devices.
What does networking operating system provide?
It allow computer to communicate on a network.
Additional functionalities
- Passing user names and passwords to check
- Separating users accounts
- Providing access to network storage, shared resources
What are three methods used to identify devices on a network?
- Internet Protocol (IP)
- MAC address
- Device name
What is IP address?
A unique address that networked devices use to send data to each other.
What does each piece of data that is sent across a network carry?
IP address of the destination.
What are two main versions of IP in use?
IPv4 - use four groups of up to three numbers separated by full stops
IPv6 - use eight groups of four hexadecimal numbers separated by colons
How can IP addresses be assigned?
- By network administrator
- By a server running DHCP
What is Dynamic Host configuration Protocol?
A networked computer that automatically assigns an IP address to other computers when they join the network.
Where are MAC address used?
In devices connected to LANs using ethernet, Bluetooth or Wi-Fi.
How is a MAC address usually made up of?
Six pairs of characters
1st three - identify the manufacturer
2nd three - NIC specific address
What are uses of MAC address?
- Restricting or allowing access to a network
- Identifying a device on a network
- Tracking a device
- Assigning static or fixed IP addresses
What is device name?
Device name is a descriptive name that helps users to identify computers on a network.
How can you change a device name?
By using tools in the device’s operating system.
What is Cat5e cable?
- Used for Ethernet connection
- Transfer data at 10Mbit/s, 100Mbit/s, 1Gbit/s
How do Cat5e cables connect devices?
Through their NICs.
What does device’s NIC allow?
It allows the computer to exchange data with other networked computers.
What is Cat6 cable?
They transfer data at 10Gbit/s.
What is the advantage of optic fiber?
It can carry data at 40Gbits/s over many kilometers without affecting its signal.
What does wireless accesspoint allow?
It allow devices with Wi-Fi connectivity to connect to wired network.
What does a switch do?
It connects devices on a network.
What does switch use to connect to a device?
Through its ports using a cable.
What does switch make sure?
It ensure that data sent from any devices gets to the correct devices on the network.
What does gateway do?
It connects two different types of network.
What does router store?
It stores the addresses of all devices that are connected to it.
What can router do?
It can forward network traffic to its destination using the quickest route.
Home routers have IP address dynamically allocated by ISP.
True
What does booster do?
It is used to to amplify the signal in a network to extend the range.
What is the maximum length of wired ethernet connection?
100m
How can wireless access point be set to act as booster?
To repeat mode
