MAC Addresses

Question 1

MAC is the _________ address for our network interfaces

Answer 1

Physical

Question 2

Each host in a network has its own __ -bit ( __ octets) Media Access Control (MAC) address

Answer 2

48-bit (6 octets)

Question 3

different standards for the MAC address:
x3

Answer 3

Ethernet (IEEE 802.3)
Bluetooth (IEEE 802.15)
WLAN (IEEE 802.11)

Question 4

the MAC address addresses the physical connection (network card, Bluetooth, or WLAN adapter) of a host

Question 5

Each network card has its individual MAC address…….

Question 7

The MAC address consists of a total of _ bytes.

Answer 7

6 bytes.

Question 7

Each IP packet has a ______ address and a _______ address.

Answer 7

Each IP packet has a sender address and a destination address.

Question 8

The first half of the MAC address (3 bytes / 24 bit) is the so-called _________ _____ _______ (OUI) for the respective manufacturers.

Answer 8

Organization Unique Identifier (OUI)

Question 9

The last half of the MAC address is called the _________ _______ ____ or _______ _______ ________ (NIC), which the manufacturers assign. The manufacturer sets this bit sequence only once and thus ensures that the complete address is unique.

Answer 9

Individual Address Part or Network Interface Controller

Question 10

If a host with the IP target address is located in the same subnet, the delivery is made directly to the target computer’s _____ address.

Answer 10

directly to the target computer’s physical address

Question 11

If the Ethernet frame’s destination address matches its own layer 2 address, the router will ______ the _____ to the ______ _______.

Answer 11

the router will forward the frame to the higher layers.

Question 12

______ _______ _______ (ARP) is used in IPv4 to determine the MAC addresses associated with the IP addresses.

Answer 12

Address Resolution Protocol

Question 13

The last bit of the _____ octet identifies the MAC address as ______ (0) or ________ (1)

Answer 13

The last bit identifies the MAC address as Unicast (0) or Multicast (1)

Question 14

With unicast, it means that the packet sent will reach only ___ specific host.

Answer 14

one

Question 15

With multicast, the packet is sent ____ to all hosts on the _____ network, which then decides whether or not to accept the packet based on their configuration

Answer 15

With multicast, the packet is sent once to all hosts on the local network, which then decides whether or not to accept the packet based on their configuration

Question 16

The second last bit in the first octet identifies whether it is a global OUI, defined by the IEEE, or a locally administrated MAC address
Global OUI is:

Answer 16

Global OUI (2nd to last bit in first octet is 0)
Representation 1st Octet
Binary 1101 1100

Question 17

The second last bit in the first octet identifies whether it is a global OUI, defined by the IEEE, or a locally administrated MAC address
Locally Administered is:

Answer 17

Locally Administered (2nd to last bit in first octet is 1)
Representation 1st Octet
Binary 1101 1110

Question 18

This involves altering the MAC address of a device to match that of another device, typically to gain unauthorized access to a network.

Answer 18

MAC spoofing

Question 19

This involves sending many packets with different MAC addresses to a network switch, causing it to reach its MAC address table capacity and effectively preventing it from functioning correctly.

Answer 19

MAC flooding

Question 20

Some networks may be configured only to allow access to devices with specific MAC addresses that we could potentially exploit by attempting to gain access to the network using a spoofed MAC address.

Answer 20

MAC address filtering

Question 21

Address Resolution Protocol is a _____ protocol

Answer 21

network protocol

Question 22

Address Resolution Protocol is AKA

Answer 22

ARP

Question 23

ARP is used to resolve _____ (layer 3 of the OSI model) to a ______ (layer 2 of the OSI model) MAC address.

Answer 23

Network layer 3 of the OSI model to a
Data Link layer 2 of the OSI model

Question 24

What does ARP do?

Answer 24

it maps a host’s IP address to its corresponding MAC address to facilitate communication between devices on a Local Area Network (LAN)

Question 25

When a device on a LAN wants to communicate with another device, it sends a broadcast message containing the destination IP address and its own MAC address

Question 26

The device with the matching IP address responds with its own MAC address, and the two devices can then communicate directly using their MAC addresses. This process is known as ___ _______.

Answer 26

ARP resolution

Question 27

ARP is an important part of the network communication process because it allows devices to send and receive data using MAC addresses rather than IP addresses, which can be more efficient

Question 28

Two types of request messages can be used:

Answer 28

ARP Request
ARP Reply

Question 29

ARP Request

Answer 29

When a device wants to communicate with another device on a LAN, it sends an ARP request to resolve the destination device’s IP address to its MAC address. The request is broadcast to all devices on the LAN and contains the IP address of the destination device. The device with the matching IP address responds with its MAC address

Question 30

ARP Reply

Answer 30

When a device receives an ARP request, it sends an ARP reply to the requesting device with its MAC address. The reply message contains the IP and MAC addresses of both the requesting and the responding devices

Question 31

The goal of _____ is to associate our MAC address with the IP address of a legitimate device on the company’s network, effectively allowing us to intercept traffic intended for the legitimate device

Answer 31

ARP Spoofing

Question 32

ARP Spoofing, which can be used to _______ or ________ traffic on the network

Answer 32

intercept or manipulate traffic on the network

Question 33

ARP spoofing, also known as ARP _____ _______ or ARP ______ ______

Answer 33

ARP cache poisoning or ARP poison routing,

Question 34

Tools for ARP spoofing consist of:
x2

Answer 34

Ettercap
Cain & Abel

Question 35

ARP poisoning to perform various activities, such as ______ ______ _______, redirecting traffic, or launching _____ attacks

Answer 35

stealing sensitive information, redirecting traffic, or launching MITM attacks