3.4 - Network Hardware Flashcards
What does a computer need to access a network? [1]
network interface card (NIC)
What does NIC contain? [1]
the media access control (MAC address)
What are the two types of NIC? [2]
- wireless
- LAN
What is the usage of an interface? [1]
- created so data can transfer from internet to CPU and vice versa
What is a MAC address? [1]
identifies a device connected to a network
What is the structure of a MAC address? [3]
- usually written as hexadecimal
- created using manufacturer code and serial code
- written in groups of 6 hex digits
What is the length of a MAC address? [1]
48 bits
What is MAC spoofing? [1]
hackers try to change their MAC address to get into a network
What is an IP address? [1]
a router assigns the device which connects to a network an IP address
What are the different versions of IP address? [2]
- IPv4
- IPv6
What is static IP? [4]
- once assigned it never changes
- it is manually assigned
- no lease time
- more expensive
What is dynamic IP? [4]
- it can change
- automatically assigned
- better for bigger networks
- fixed lease time
What are the different types of IP address? [2]
- static
- dynamic
What are features of an IPv4 address? [3]
- uses 4 octates
- each octate can have a number between 0-255
- numbers must be represented as 8 bits
What is the total number of bits in an IPv4 address? [1]
32 bits
What are features of an IPv6 address? [2]
- uses hexacdecimal
- 8 groups of 4 hex digits
What is the total number of bits in an IPv6 address? [1]
128 bits
What is a router? [1]
they enable data packets to be routed between different networks
What is the role of a router in a network? [3]
- finding a path to the destination
- forward packets
- assign IP address to devices
