3.4 network hardware Flashcards
1
Q
what does a computer need to access a network
A
network interface card (NIC)
2
Q
what is meant by a MAC address
A
- media access control address
- NIC given MAC address at point of manufacture
- uniquely identify device
3
Q
purpose of MAC address
A
- uniquely identify device
- when packet sent/received, MAC address used to identify sender’s and receiver’s devices
4
Q
structure of MAC address
A
- 48 bits - 6 groups of hex digits
- manufacturer code and serial code
NN-NN-NN-DD-DD-DD
N: manufacture
D: serial
5
Q
what is meant by an IP address
A
- internet protocol address
- allocated by network
- static/dynamic
6
Q
purpose of IP address
A
- uniquely identify location of device on IP based network (like internet)
- used in routing operations, identify where device is connected to internet
7
Q
whats static ip address
A
- permanently assigned to device by ISP
- don’t change each time device logs onto internet
8
Q
what devices are assigned static ip addresses
A
- remote servers hosting a website
- online database
9
Q
what is a dynamic ip address
A
- diff evr time device connects to internet
- assigned by ISP each time log onto internet
- done using dynamic host configuration protocol (DHCP)
10
Q
types of IP addresses
A
- IPv4
- IPv6
11
Q
what is IPv4
A
- 32 bits
- 4 groups of denary numbers separated by dots
- denary values can go from 0 inclusive to 255 inclusive
12
Q
what is IPv6
A
- 128 bits
- 8 groups separated by colons
- each grp has 4 hex digits
13
Q
role of router in network
A
- send data to specific destination on network
- assign IP addresses
- connect local network to internet
