Network Hardware (Cambridge (CIE) O Level Computer Science)
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What is a Network Interface Card (NIC)?
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What is a Network Interface Card (NIC)?
A Network Interface Card (NIC) is a hardware component required for a computer to connect to a network, allowing it to send and receive data.
True or False?
A NIC can only be wired.
False.
A NIC can be both wired and wireless.
Network hardware
Network hardware is a selection of essential components that enable the connectivity and communication of devices within computer networks.
List three examples of network hardware.
Three examples of network hardware are:
Router
Wireless access point (WAP)
Switch.
What is the primary function of a NIC?
The primary function of a NIC is to allow a computer to send and receive data over a network.
True or False?
Every computer needs a NIC to connect to a network.
True.
Every computer needs a NIC to connect to a network.
Transmission media
Transmission media is a type of network hardware used for data transmission in computer networks.
What type of network does a NIC typically connect to?
A NIC typically connects to a Local Area Network (LAN).
What is a MAC address?
A MAC address is a unique identifier given to devices which communicate over a local area network (LAN).
What does MAC stand for?
MAC stands for Media Access Control.
True or False?
MAC addresses can change.
False.
MAC addresses are static and cannot change.
How is a MAC address represented?
A MAC address is represented as 12 hexadecimal digits (48 bits), usually grouped in pairs.
What is an IP address?
An IP address is a unique identifier given to devices which communicate over the Internet (WAN).
True or False?
IP addresses can be both static and dynamic.
True.
IP addresses can be both static and dynamic.
IPv4
IPv4 is Internet Protocol version 4, represented as 4 blocks of denary numbers between 0 and 255, separated by full stops.
IPv6
IPv6 is Internet Protocol version 6, represented as 8 blocks of 4 hexadecimal digits, separated by colons.
How many unique addresses does IPv4 provide?
IPv4 provides over 4 billion unique addresses (2^32).
What is the main difference between MAC and IP addresses in terms of network scope?
MAC addresses are used for communication on a LAN, while IP addresses are used for communication on a WAN/Internet.
What is a router?
A router is a device responsible for routing data packets between different networks.
What type of networks does a router connect?
A router connects local area networks (LAN) to the wider internet, which is a type of wide area network (WAN).
True or False?
A router can assign IP addresses to devices on the network.
True.
A router can assign IP addresses to devices on the network.
What is one example of data a router can direct?
One example of data a router can direct is sending internet traffic to the correct destination/devices in your home network.
State three tasks carried out by a router.
Three tasks carried out by a router are:
Send and receive packets of data
Connect a local network to the internet
Assign IP addresses to nodes/devices.
True or False?
A router can manage and prioritise data traffic.
True.
A router can manage and prioritise data traffic.
How does a router help maintain stable connections?
A router helps maintain stable connections by managing and prioritising data traffic.
What is the role of a router in IP address management?
The role of a router in IP address management is to assign IP addresses to the devices on the network.