Question { 6424 }

R1#sh ip nat translations
Pro Inside global Inside local Outside local
Outside global
icmp 15.1.1.1:11 10.1.1.1:11 30.1.1.1:11
30.1.1.1:11
icmp 15.1.1.1:12 10.1.1.1:12 20.1.1.1:12
20.1.1.1:12
icmp 15.1.1.1:13 10.1.1.1:13 21.1.1.1:13
21.1.1.1:13
icmp 15.1.1.1:14 10.1.1.1:14 31.1.1.1:14
31.1.1.1:14
R1#


So my question is that after every ip address [:] is used &
some number. 15.1.1.1{:11}... what is this colon & number
indicate.

Can anyone tel me this..!!!

Thanking you advance.
Shahin

Answer

Thnx jatin... now one more question arising in my mind..
whether it is using TCP port or UDP port....????

How can we identify it.???

Question { 5501 }

what is the need og
jitu(config)#ip helper address
can any one exaplain it briefly
specially shain i am looking towards you.Becoz you are the
only one who can solve my that problem not even jitendera sinha

Answer

HI Buddy.... Didn't get ur question.. Cud u explain
plzzz.... OG stands for...

Don't mind plzzzzz...

Question { 5501 }

what is the need og
jitu(config)#ip helper address
can any one exaplain it briefly
specially shain i am looking towards you.Becoz you are the
only one who can solve my that problem not even jitendera sinha

Answer

If u r talking about need of command: ip helper-address, thn
i can say about it.

In CCNA studies, we got to know that router always block the
broadcast traffic, dats fine.

But if ur organization's network is establish in such a way:


client-------Router------- DNS Server
!
!
!
!
DHCP Server

Now... if ur pc want to locate DNS server thro broadcast,
broadcast traffic will come from client pc to all the way to
Router.

Wat router will do now, Router will block all the broadacast
traffic. As we learn in our previous studies. Ryt....

So client PC will unable to locate DNS server, coz router
doesn't allow to broadcast the traffic.

Same case, if Client PC want to gain IP address, it will
broadcast...n requesting for IP address from DHCP server.

I hope u knw the DHCP process, I mean "DORA" process. In
this case also router block all the broadcast traffic.

So wats the solution for this....

By configuring IP address on the interface subconfig mode..
with the help of (ip helper-address A.B.C.D)....

wat it'll do, The UDP broadcasts traffics are translated
into a unicast by the router, making the communication
possible.

The command should be configured on the interface that will
be receiving the broadcasts.

Router(config)#interface fastethernet 0/0
Router(config-if)#ip helper-address A.B.C.D

where A.B.C.D is the IP address of ur DNS/DHCP server.

One more point is there, this ip-helper address doesn't
forward all the UDP broadcast.. it broadcast only 8 UDP
services.. like..

1. TIME, port 37
2. TACACS, port 49
3. DNS, port 53
4. BOOTP/DHCP Server, port 67
5. BOOTP/DHCP Client, port 68
6. TFTP, port 69
7. NetBIOS name service, port 137
8. NetBIOS datagram service, port 138

if u want to include any more UDp services the command is

Router(config)#ip forward-protocol udp (port Number)

Hope this post helps u to understand the use of command n
circumstances of command when to use it n how to use it.

Looking forward ur feedback. If i did anymistake the let me
know plzzzzzzzzz...

Cheers.. hv a nice day buddy.

Question { Wipro, 23099 }

A routing table contains static, RIP, and EIGRP routes for the
same destination network. Which route would normally be used
to forward data?

Answer

Hello Guys, if i m not wrong, thn Jitu is correct.... As far
as my concern, AD value is used in the route selection
process, not AS value...!!!

So Mr.Vivek, Cud u explain how AS value influence in route
selection process???????? I will be thankful to u if u
explain it..!!!

Question { Wipro, 23099 }

A routing table contains static, RIP, and EIGRP routes for the
same destination network. Which route would normally be used
to forward data?

Answer

Hey Guys... stop answering answered question.....!!! Lots of
unanswered questions are there.. try those once...!!!! Its a
humble request...!!!

Question { HCL, 8102 }

Is it possible that in a switched network that any port of
the switch can be infected with any kind of viruses that
jamed and create more traffic in network which cause slow
network performance?

Answer

Hi... i don't think so... Hv u ever heard about that a
switch is virus infected..?? As far as my knowledge, viruses
r basically for windows or linux platform. Viruses can pass
through switch, which will not do any harm in switch IOS as
well as data pass through switch.

If we think about virus, it is nothing but a program
basically understand by OS n perform some unwanted job in
user data in PC.

In switch, if virus comes, n store in memory, though it will
not hamper switch IOS ya user data. Coz virus not getting
its own platform to take the action.

Thats all i can say.. if i m wrong, thn plzzzz let me know.
I'll be thankful to u.

Cheers

Question { Wipro, 32778 }

What hppends when ping 127.0.0.1 command executes?

Answer

As far as my knowledge, Jitu is correct. If i am not wrong,
then it also check the TCP/IP protocol stack... whether
working properly or not.

Question { HCL, 10020 }

what is subnetting?

Answer

Subneting is the process of dividing a large network into
equal smaller parts for the purpose of:

1. Reduce network traffic.
2. Optimized network performance.
3. Simplified management.


Note:
In Sub netting, some of host bits are converted into
network bits.

Question { 3626 }

hello sir , if i finish this certification is the job is
conform ?? and in chennai were i can do this ??

Answer

Hey buddy, u asked an interesting question.. Isn't it
funny.... 2 in 1 offer, where do the certification and get a
free job.


Just kidding, its not like that.. its all about the
vacancies & catch it when it knocks your door. U must be gud
in concept & as well as in configuration & understanding
enough the networking circumstances.

Do the well & best of luck. Cheers..

Question { IBM, 25661 }

what is difference between subnet-mask and wildcard mask?

Answer

Subnet Mask:
Subnet mask is a 32 bits value which
differentiate the host portion & network portion of an IP
address.

Where network portion is designate by the 1's & host portion
0's.


Wild card Mask:
Wild card mask defines which IP addresses are
allowed & which are blocked.

Where 0's defines the accurate match where non zero value
defines any value on the corresponding octete.

Question { IBM, 25661 }

what is difference between subnet-mask and wildcard mask?

Answer

Mr. S.M.Feroz Ahmed, Nice to see you here in Allinterview
Forum....

Could you please explain on which book & How the range of IP
address would be 191 to 227....???

Will be thankful if u let us know about it????

C ya...

Question { 9801 }

what is the basic rules for ACLs?

Answer

Basic rules for ACLs are -


1. All deny statement have to be given first.

2. There should be at least one permit statement.

3. An implicit deny block all the traffic by default, when
there is no match.

4. We can configure one access-list per interface per
direction i.e. two ACL per interface. One in inbound
direction & one in outbound direction.

5. ACL works in sequential order.

6. Editing of access-list is not possible i.e. selecting,
adding or removing access-list statement is not possible.

Question { HP, 10471 }

What is Standard ACLs?

Answer

Jitu, as far as my knowledge,

ACLs are classified into two types based on the configuration -

1. Standard ACL.

2. Extended ACL.

ACLs are classified into two types based on the
identification -

1. Named ACL

2. Numbered ACL.

Example:

1. If we use an unique number for the the identification of
Standard/Extended ACL, then it is called Numbered
Standard/Exteded ACL.

2. If we use a name for the the identification of
Standard/Extended ACL, then it is called Named
Standard/Exteded ACL.

Question { TCS, 14423 }

How many types of IP routings?

Answer

IP routing are of three types -

1. Static Routing

2. Default Routing.

3. Dynamaic Routing

Question { TCS, 14423 }

How many types of IP routings?

Answer

1 what is the diffrence betwen static routing and defalut
routing.

2 in which condition we can apply staic and in which
condtion we can apply static routiing.


Jitu Bhai.... Explain it plzzzzzzzz...