Document page
Computer Science IGCSEPDF 40
142 pagesrevision 46930
PDF 40
Page image rendered from the stored file at 110 dpi; it sharpens as you zoom. Outlines are placed from each region’s stored position on the page (612 × 792 pt).
readable
Source of this text: embedded text layer. The better of the embedded text and OCR is kept.
➤ Network Interface Card
●
●
➥
●
●
●
●
●
●
●
●
●
●
●
Network hardware enables devices to connect and
communicate within a network.
Common network hardware includes:
○ Router
○ Wireless Access Point (WAP)
○ Switch
○ Transmission media
○ Network Interface Card (NIC)
Network Interface Card (NIC) allows a computer to
connect to a network.Can be wired or wireless.
Enables the computer to send and receive data over the
network.
MAC (Media Access Control) address is a unique identifier
for devices on a LAN.
Assigned to a NIC at manufacture.
Static: MAC addresses do not change.
Allows switches to forward data to the correct device.
Any device with a NIC has a MAC address.
MAC address stays the same even if the device connects to
a different network.
MAC address is 12 hexadecimal digits (48 bits), usually in
pairs.
First three pairs = manufacturer ID (OUI).
Last three pairs = NIC serial number.
MAC Address