IG1 U5T2 MAC and IP Address

Which of the following about MAC address are True?

• It's an unique identifier for each hardware device.

• It is permanently put on the device by the manufacturer

• It is 32-bits addresses

• It is written in octonary

• It is separated by colons(:) or hypens(-)

Answer explanation

MAC addresses are 48-bit addresses which are usually written as hexadecimal digits

Which of the following statements are True?

• The IP address 192.168.1.1 is used on this home network and may also be used on other home networks.

• The external IP address that is allocated by the ISP is a dynamic IP address.

• The same MAC address may be used on different devices worldwide as long as it is unique on the private network it is connected to.

• MAC stands for machine access control.

Answer explanation

192.168.1.1 is part of a private IP address range, so it is used in private networks, but not the public Internet.

MAC addresses are unique to every NIC they are given to.

MAC=Media Access Control

Which of the following are valid IPv4 addresses?

• 172.16.2.129

• 255.255.255.0

• 92.79.256.23

• 79.4.123.7.6

Answer explanation

The maximum for an 8-bit number is 255.

IP version 4 (IPv4) addresses are made from four bytes(32 bits)

Which of the following are the valid MAC address?

• 5d-cd-94-2a-99-0a

• 4e-f6-93-5d-bc-2a-3d

• 78-3e-bc-g7-93-22

• ac-dc-bc-cc-be-ad

• bb-2a-cd-83-21

Answer explanation

MAC addresses are are 48-bit addresses(8 bytes) usually written as hexadecimal(0-9,A-E) digits that often have each byte separated by colons(:) or hyphens(-)

The manufacturer code of MAC address 23:9a:3c:de:a3:9b is: (a)  

• 23:9a:3c
• de:a3:9b
• 23:9a
• 23:9a:3c:de

What is the total number of unique IP addresses that are available? (a)  

• 2^16
• 2^32
• 2^64
• 2^128

Answer explanation

Number of 32-bit IP addresses available

= 2^32 ~4.3 billion addresses

​ ​de:a3:9b is the ​ (a)   of MAC address: 23:9a:3c:de:a3:9b

• serial code
• manufacturer code
• address code
• media code

Answer explanation

Which of the following are valid IPv6 addresses?

• 0123 : 4567 : 90ab : cdef : 0123 : 4567 : 89ab : cdef

• 0123 : 4567 : 90ab : cdef : 0123 : 4567

• 10bc:b3:0

• 10bc:b3::1a7

Answer explanation

Match the following

• 0123 : 4567 : 90ab : cdef : 0123 : 4567 : 89ab : cdef

• MAC address

• 1f-38-69-ba-9f-0c

• IPv6 address

• 72.38.248.127

• IPv4 address

ISP stands for(Uppercase first letter, please):