Tag - 192

Private IP Classes Range
Interview Question of CCNA Part4
CCNA Access List Sim 1

Private IP Classes Range

  • Public IP addresses are addresses that are valid as nodes on the Internet.
  • They can be resolved and routed across the Internet from one point to another.
  • Unlike public IP, private IP addresses are not valid on the Internet.

Three range of private IP addresses has been selected for the three network class.

For Class A network, – (10/8 prefix) range (For big network that requires a huge pool of 16 million private IP addresses)

For Class B network, – (172.16/12 prefix) range (For medium-sized network that requires 65000 private IP addresses)

For Class C network, – (192.168/16 prefix) range (Commonly used IP range on smaller network for easier addressing of 254 IP addresses. May not necessarily be smaller network but network managed in smaller blocks.)

private ip classes range

Beside these, there is Microsoft’s range of default IP addresses that are allocated to systems when they are unable to obtain address from a DHCP server. Its Called APIPA

When a DHCP server fails, APIPA allocates IP addresses in the private range to


Interview Question of CCNA Part4

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?

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

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 = –
B Class = –
C Class = – through (APIPA only)

CCNA Interview Question Part 1

CCNA Interview Question Part 2

CCNA Interview Question Part 3

CCNA Interview Question Part 4

CCNA Interview Question Part 5

CCNA Interview Question Part 6

CCNA Interview Question Part 7

CCNA Interview Question Part 8

CCNA Interview Question Part 9

CCNA Interview Question Part 10

CCNA Interview Question Part 11

CCNA Interview Question Part 12

CCNA Interview Question Part 13

CCNA Interview Question Part 14

CCNA Access List Sim 1


A network associate is adding security to the configuration of the Corp1 router. The user on host C should be able to use a web browser to access financial information from the Finance Web Server. No other hosts from the LAN nor the Core should be able to use a web browser to access this server. Since there are multiple resources for the corporation at this location including other resources on the Finance Web Server, all other traffic should be allowed.

The task is to create and apply an access-list with no more than three statements that will allow ONLY host C web access to the Finance Web Server. No other hosts will have web access to the Finance Web Server. All other traffic is permitted.
Access to the router CLI can be gained by clicking on the appropriate host.

All passwords have been temporarily set to “cisco”.
The Core connection uses an IP address of
The computers in the Hosts LAN have been assigned addresses of –
Host A
Host B
Host C
Host D
The servers in the Server LAN have been assigned addresses of –
The Finance Web Server is assigned an IP address of

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