Question { 3606 }

Write an access list line which will deny
node 20.0.2.1 to anywhere on your network using
DNS via UDP. Don't worry about the other access
list lines.

Answer

access list 10 permit udp host 20.0.2.1 any eq 53

Question { 3680 }

You have OSPF traffic flooding your network
via one of your router interfaces. Write the access
list line that will deny all ospf traffic. Don't
worry about the other lines of the access list.

Answer

access-list 101 deny ospf any any

Question { Juniper Networks, 6400 }

How to see the running-config & startup-config infor from
global configuration mode.

As we know, from priviledge mode we cn see it by executing
command. i.e.

Router#show running-config

and

Router#show startup-config

Now wat is the coommands use in global configuration mode o
see those info.

Router(Config)# ??????

Answer

MR.KKK ... its a wrong answer.

Question { 4045 }

You want to clear the outputs on your serial interface
showing errors on the interface. Which command do you type?

Answer

The command we have to configure on interface is

Router#clear counters serial 0

Question { 4312 }

Write out a config to permit only the below MAC address
to pass traffic through a port on your switch.

mac-address 0005.1b00.5b58

Answer

Switch(config)#interface FastEthernet0/12
Switch(config-if)#switchport mode access
Switch(config-if)#switchport port-security
Switch(config-if)#switchport port-security mac-address sticky
Switch(config-if)#switchport port-security mac-address
0005.1b00.5b58

Question { 7504 }

Hi Guys
I am facing one problem while configuring PAP over Point to
Point links. Configuration scenario is like this.
ROUTER 1: (Hostname – R1)
R1(config)#username R2 password CCNA2
R1(config)#interface serial 1/1
R1(config-if)ip address 10.0.0.1 255.0.0.0
R1(config-if)#lock rate 64000
R1(config-if)#encapsulation ppp
R1(config-if)#ppp authentication pap
R1(config-if)#ppp pap sent –username R1 password CCNA1
R1(config-if)#no shutdown


ROUTER 2: (Hostname – R2)
R2(config)#usename R1 password CCNA1
R2(config)#interface serial 1/1
R2(config-if)#ip address 10.0.0.2 255.0.0.0
R2(config-if)#encapsulation ppp
R2(config-if)# ppp authentication pap
R2(config-if)# ppp pap sent –username R2 password CCNA2
R2(config-if)#no shutdown

Now problem is that, after configure the command “ppp
authentication pap” the “Line protocol” status goes down on
each router. But when I disable this command using “no ppp
authentication pap”, the “Line Protocol” status goes up.

What could be the problem, can anyone explain it plzzz….!!!

Thanks in Advance…!!
Shahin..

Answer

Sry for the mistyped on ROUTER 1 configuration. Its not
"lock rate 64000".

Its "clock rate 64000"..

Sry for the mistake..!!1

Question { 7504 }

Hi Guys
I am facing one problem while configuring PAP over Point to
Point links. Configuration scenario is like this.
ROUTER 1: (Hostname – R1)
R1(config)#username R2 password CCNA2
R1(config)#interface serial 1/1
R1(config-if)ip address 10.0.0.1 255.0.0.0
R1(config-if)#lock rate 64000
R1(config-if)#encapsulation ppp
R1(config-if)#ppp authentication pap
R1(config-if)#ppp pap sent –username R1 password CCNA1
R1(config-if)#no shutdown


ROUTER 2: (Hostname – R2)
R2(config)#usename R1 password CCNA1
R2(config)#interface serial 1/1
R2(config-if)#ip address 10.0.0.2 255.0.0.0
R2(config-if)#encapsulation ppp
R2(config-if)# ppp authentication pap
R2(config-if)# ppp pap sent –username R2 password CCNA2
R2(config-if)#no shutdown

Now problem is that, after configure the command “ppp
authentication pap” the “Line protocol” status goes down on
each router. But when I disable this command using “no ppp
authentication pap”, the “Line Protocol” status goes up.

What could be the problem, can anyone explain it plzzz….!!!

Thanks in Advance…!!
Shahin..

Answer

ok... Jitu.. I m agree with u.. but we have to configure
clock rate only on DCE router... M i ryt?????? There is no
need to configure clock rate on DTE router, as it
synchronise according to DCE router.


i got this concept somewhere in books & i also tried this
in PACKET TRACER. I also saw the line status & protocol
status. All are in up state, when i configured clock rate
on DCE & i left DTE.

U cn try this on packet tracer.


Let me know.. Is it correct or wrong?????

Question { 7504 }

Hi Guys
I am facing one problem while configuring PAP over Point to
Point links. Configuration scenario is like this.
ROUTER 1: (Hostname – R1)
R1(config)#username R2 password CCNA2
R1(config)#interface serial 1/1
R1(config-if)ip address 10.0.0.1 255.0.0.0
R1(config-if)#lock rate 64000
R1(config-if)#encapsulation ppp
R1(config-if)#ppp authentication pap
R1(config-if)#ppp pap sent –username R1 password CCNA1
R1(config-if)#no shutdown


ROUTER 2: (Hostname – R2)
R2(config)#usename R1 password CCNA1
R2(config)#interface serial 1/1
R2(config-if)#ip address 10.0.0.2 255.0.0.0
R2(config-if)#encapsulation ppp
R2(config-if)# ppp authentication pap
R2(config-if)# ppp pap sent –username R2 password CCNA2
R2(config-if)#no shutdown

Now problem is that, after configure the command “ppp
authentication pap” the “Line protocol” status goes down on
each router. But when I disable this command using “no ppp
authentication pap”, the “Line Protocol” status goes up.

What could be the problem, can anyone explain it plzzz….!!!

Thanks in Advance…!!
Shahin..

Answer

Whatever i know, its not necessary to put the same key on
both router.

As we r advertising the key & also mentioning in
configuration, so i don't think it sud match.

Plzz come up guys & provide a better solution...!!

Thanking u in advance..!!

Question { 4978 }

Port selection is done at which layer of OSI reference
model?????

Answer

Cud u explain in which case network layer select port..!!!!
I'll be thankfull to u if u explain it..!!!

Question { 22450 }

What is the meaning of PASSIVE interface in RIP, IGRP, EIGRP
& OSPF??

Can any one explain..!!!

Answer

hehehe... let someone else to answer dis.... Most of the
time, i observed that... U n Me posting question & answer
also..!!

Cmon guys... Post some question..!!!

Question { 2704 }

Hello Every one. Actually its my first time to using this
site and first time to posting a question. Actually i need
to know about CCNA Exam. Please can any one tell me about
the Exam style and any recommendation for study? Best
Regards to all the Friends

Answer

Buddy, Nice to see here...!!! First of all u need to have
damn dedication to pass any cisco exam.

First of all, go through Cisco press book for CCNA. watch
out all multiple question of that books.

Be very proficient in subnetting (FLSM & VLSM, Protocol
concept (RIP, RIPv2, EIGRP & OSPF single area only),
configuration & also troubleshooting.

Be good knowledge of every sh commands & output of those
command.

Be good concept on switching, VTP, VLAN, Trunking, not only
configuration but also troubleshooting.

WAN technology (ISDN, Frame Relay) PPP, HDLC, CHAP PAP
configuration & troubleshooting.

So my recommandation is spend more & more time spend with
books. CCNA study guide, Cisco press book.

Last advice, go through Dumps & write the exam. Don't use
cheat code... after all u gonna cheat urself.


All the very best..!!!

Question { 3224 }

Dear Mr.Shahin thank you very much for your advise i realy
thanks full to you.
Best of luck

Answer

Dear Jitu Sir

Har "Kyun" ka jawaab nehi hota na..

hehehehhe

Question { 2753 }

hi i have some difficulty plz reply as s0on as possible.

1 what is csma/cd(i know u are familer with that protocol)
2 what is the need for it

and and 3 rd one in which i need help

how to enable csma/cd at router or switches

shain make it answer as sson as possibele and call me afetr
reply

thanks
jitendera kuamr sinha

Answer

CSMA/CD (Carrier Sense Multiple Access/Collision
Detection)is media-access mechanism is what keeps networks
running.

If two or more computers transmit data at the same time, we
get data collision. And thus, no data is sent or received.

We have CSMA/CD for both preventing and controlling collisions.

Suppose 4 system connected as on bus topology or connected
on a Hub.

As we know, in Hub one collision domain & one broadcast
domain. More simply, Hub port just copied data wat it
received & paste it on the rest of the port apart from dat
port from where hub received this data.

So how its detects collision...

Before sending any data, Ethernet NIC first test the voltage
of the line. If its normal, i mean voltage level on line its
start sending data. (Specific voltage level value i didn't
remember).

If two NIC test this voltage level at the same time & they
found its normal for start sending data. When they send
data, data will collide somewhere in the line. Hence data
lose occur & delay in communication.

When NIC detects collision, they wait for random period of
time. (Time i didn't remember). After certain time period
they test the line again & if they found normal. they will
start sending data.

Note: CSMA/CD is not used on Full Duplex Ethernet networks.


3rd Question:

As far my knowledge, there is no such specific command for
this. But we can make any full duplex line in to half duplex
also.

Router(config)#interface fastethernet 0/0
Router(config-if)#duplex ?
auto Enable AUTO duplex configuration
full Force full duplex operation
half Force half-duplex operation



Buddy, i can say this much about it. Hope it may help u
little bit..!!!

Thankx for nice question.

Question { 22478 }

Hi, All
I am configuring EIGRP in Packet tracer, after configuring
all the things it is not working but in one condition it is
working fine if i am putting all my router and network
withing one network subnets e.g. 172.16.0.0 or 10.0.0.0 but
whenever i am puting different network subnets e.g. in one
network it is RA(config-if)#=ip address 10.0.0.1, and in
fa0/0= 192.168.1.10 and in RB(config-if)#10.0.0.2 (s1/0) and
in S1/1 11.0.0.1 and in fa 0/0 192.168.100.1 ,where as in
third router RC(config-if)#=ip address 11.0.0.2 and in fa
0/0 172.16.1.10 and after configuring all this serial is
showing up and protocol showing up but eigrp process not
taking place after adding eigrp configuration, i tried with
"no auto-summary" command but not working.. Suggest me where
i missing something? can mail me at : gtech.innovator@gmail.com

Answer

Hi buddy... Just go through ur IP add config on Router A. U
configured as bellow....

RA(confg-if)# ip address 10.0.1.1 255.0.0.0 (S1/0)
RA(confg-if)# clock rate 64000
RA(confg-if)#no shut
RA(config-if)#= ip address 192.168.1.10 255.255.255.0 (FA 0/0)
RA(confg-if)#no shut
RA(confg)#router eigrp 100
RA(confg-router)# network 10.0.0.0
RA(confg-router)#network 192.168.0.0
RA(confg-router)#ctrl+z



before configuration of any dynamic protocol, Router by
default add all directly connected network on its routing table.

As per default function.. Output wud be like this before
configuration of EIGRP...

outer#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M -
mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF
inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA
external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2,
E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia
- IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route

Gateway of last resort is not set

C 10.0.0.0/8 is directly connected, Serial1/0
C 192.168.1.0/24 is directly connected, FastEthernet0/0


Now check the network u configured....

RA(confg)#router eigrp 100
RA(confg-router)# network 10.0.0.0
RA(confg-router)#network 192.168.0.0
RA(confg-router)#ctrl+z

My question is this.. where is ur 192.168.1.0/24 network.
Did u advertise this network??????? So ur configuration wub
be....

RA(confg)#router eigrp 100
RA(confg-router)# network 10.0.0.0
RA(confg-router)#network 192.168.1.0
RA(confg-router)#no auto-summary
RA(confg-router)#ctrl+z


Note: I configured ur topology in packet tracer & also in
GNS3 & its working properly..!!!

Hope... it cud be solve ur problem..!!!

Thanks for nice posting..!!!

Question { 22478 }

Hi, All
I am configuring EIGRP in Packet tracer, after configuring
all the things it is not working but in one condition it is
working fine if i am putting all my router and network
withing one network subnets e.g. 172.16.0.0 or 10.0.0.0 but
whenever i am puting different network subnets e.g. in one
network it is RA(config-if)#=ip address 10.0.0.1, and in
fa0/0= 192.168.1.10 and in RB(config-if)#10.0.0.2 (s1/0) and
in S1/1 11.0.0.1 and in fa 0/0 192.168.100.1 ,where as in
third router RC(config-if)#=ip address 11.0.0.2 and in fa
0/0 172.16.1.10 and after configuring all this serial is
showing up and protocol showing up but eigrp process not
taking place after adding eigrp configuration, i tried with
"no auto-summary" command but not working.. Suggest me where
i missing something? can mail me at : gtech.innovator@gmail.com

Answer

Hi dude, Cud u explain the exact problem ur faceing on EIGRP
configuration. If there is no configuration problem thn it
wud be a packet tracer bug. So better uninstall it & restart
ur pc & thn install again..!!

As Jitu & Shahin, indicated the probelm, apart from this i
got nthgn is wrong.