CCNA Job Interview Question

31- What is BIA ?

Burn in Address other name is MAC address

32- What is Size of IPv4 MAC Address?
48 Bits

33- Why MAC address called Physical address?
Because it’s not changeable

34- Who controls MAC address uniqueness and how
IEEE (Institute of Electrical Electronics and Engineering) Controls its uniqueness.
They divide 48 bits MAC address in two parts. First 24 bits part called OUI (Organizational unique identifier) and other 24 bits are device code.

35- How we can see MAC address from DOS Prompt?
ipconfig/all

36- Why IP address called logical address?
Private IP called logical address because they are change able.

37- What is the size of IPV4?
32 bits
38-What is Syntax of IPV4
. DOT

39- How many types of IPS?
Three Types of IP
1- Public
2- Private
3- Special IP

40- What are the ranges of private IPS?
A Class = 10.0.0.0 – 10.255.255.255
B Class = 172.16.0.0 – 172.31.255.255
C Class = 192.168.0.0 – 192.168.255.255

169.254.0.0 through 169.254.255.255 (APIPA only)

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