Tag - APIPA

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, 10.0.0.0 – 10.255.255.255 (10/8 prefix) range (For big network that requires a huge pool of 16 million private IP addresses)

For Class B network, 172.16.0.0 – 172.31.255.255 (172.16/12 prefix) range (For medium-sized network that requires 65000 private IP addresses)

For Class C network, 192.168.0.0 – 192.168.255.255 (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 169.254.0.0 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 169.254.0.1 to 169.254.255.254.

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Interview Question of CCNA Part 6

51- What is the subnetmask of / 27 in network based and host based ?

In network based 224 { 128+64+32}and in host based 248 (128+64+64+16+8)

52- What will be the prefix length of 224 in VLSM ?
27 (carry 3 bits from host (128+64+16=224) and add in network ports (24+3=27) )

53-How many valid IP will b in /21 in route Summarization?

1044

54- In which protocol you manually enable route summarization ?
OSPF

55 – In which protocol supenetting is enable by default?

RIPv2 and EIGRP

56- What is MAC address size of IPv6?

64 bits

57 – Default Packet Size of IPv6?
8 Bytes = 16*8 =128 bit

58- How many fillers we can put in one IP of IPv6?
ONE (:: called filler)

59- Which mathematically form used inIPv6?
Hexadecimal

60- What is quality of IPv6?

a)    Router processing will rapid because field size wills 8 bytes (but in IPv4 it was 12 byres)

b) No Fragmentation

c) No Checksum

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

Interview Question of CCNA Part 5

41- When we use loop back IP?

For Self  hardware test

42- When IP confliction accord in subnet which IP assigned automatically and what it called?
169.254.x.x APIPA (Automatic Private Internet Protocol address)

43- What is the minimum and maximum request timer?

Minimum = 180 sec
Maximum = 300 Sec

44- Which company mange IP’s?
IANA (Internet Assigned Number of Authority)

45- Which classes are assignable?
A, B and C

46- How many potions of IP?
Two portions of IP. Network and host

47-Do we subletting of IP?
NO, we do subletting of NID

48- What is subnetting ?
Subnetting is tool reduce the wastage of IP

49- What is CIDR ?
Class Less Inter domain Routing Protocol – another name of Supernetting.

50- What is difference between FLSM and VLSM?
In FLSM subnet mask of all subnets will b same. But in
FLSM it varies.

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

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