Which of the following is a physical address stored in the Network Interface card on your system or
any other device residing on your network?
A.
IP address
B.
I/O address
C.
MAC Address
D.
Broadcast address
Explanation:
MAC address is a physical address stored in the Network Interface card on your system or any other
device residing on your network. A Media Access Control (MAC) address is a numerical identifier that
is unique for each network interface card (NIC). MAC addresses are 48-bit values expressed as
twelve hexadecimal digits, usually divided into hyphen-separated pairs, for example, FF-00-F8-32-13-
19. The MAC address consists of two parts. The first three pairs are collectively known as the
Organizationally Unique Identifier (OUI). The remaining part is known as the device ID. The OUI is
administered by IEEE. MAC addresses are also referred to as hardware addresses, Ethernet
addresses, and universally administered addresses (UAAs).Answer D is incorrect. Broadcast address is a special kind of IP address that is used to send packets
to all the devices on a same segment of a network. For IP broadcasts, broadcast address is the
address in which the host portion of the IP address consists of either all 0’s or all 255’s. For MAC
broadcasts, all of the bet positions in the address are enabled, making the address FFFF.FFFF.FFFF in
hexadecimal.Answer A is incorrect. An IP address is a four-byte number that uniquely identifies a computer on a
TCP/IP network. It is made up of 32 bits of information. These bits are divided into four sections,
each section containing one byte (8 bits), also known as an octet. Each node on the TCP/IP network
must be assigned a unique IP address. There are two types of IP addresses, i.e., Private and Public.Answer B is incorrect. I/O address is a communication port between a device and the CPU. The CPU
needs a memory address, known as Input/Output (I/O) address, to communicate with any peripheral
device. I/O address is a hexadecimal number that the CPU uses to identify a device. I/O address
allows the CPU to send instructions to devices installed on the bus slot of a computer.
Resources such as I/O addresses, IRQs, and DMAs are configurable aspects of communication
between devices inside a PC. Whenever a component, such as a sound card or internal modem is
installed in a PC, its I/O address, IRQ, and DMA channels must be correctly configured.