For example, the destination IP address of 10.1.0.14 will match three “ip route” commands:

Local(config)# ip route 0.0.0.0 0.0.0.0 192.168.1.1

Local(config)# ip route 10.1.0.0 255.255.255.0 192.168.2.2

Local(config)# ip route 10.1.0.0 255.255.0.0 192.168.3.3

But the second command is more specific (10.1.0.0/24 is more specific than 10.1.0.0/16 or 0.0.0.0/0) so the packet will be routed to 192.168.2.2.

However, the destination IP address of 10.1.1.10 will match only two “ip route” commands:

Local(config)# ip route 0.0.0.0 0.0.0.0 192.168.1.1

Local(config)# ip route 10.1.0.0 255.255.255.0 192.168.2.2

Local(config)# ip route 10.1.0.0 255.255.0.0 192.168.3.3

Since the second command is more specific (10.1.0.0/24 is more specific than 10.1.0.0/16 or 0.0.0.0/0) so the second route is eliminated and the packet will be routed to 192.168.3.3.

Hi, sorry but maybe there is a mistake in your answer of Question No.5 about [10.1.1.10]
Your explain:
For example, the destination IP address of 10.1.1.10 will match two “ip route” commands:
ip route 10.1.0.0 255.255.255.0 192.168.2.2
ip route 10.1.0.0 255.255.0.0 192.168.3.3
But the first command is more specific (10.1.0.0/24 is more specific than 10.1.0.0/16) so the packet will be routed to 192.168.2.2.

But your answers:
Next hop 192.168.3.3:
+ 10.1.1.10
+ 10.1.4.6

??? surely this should say 192.168.2.2 ???

No, it does not match, look at the route again.
10.1.0.0 255.255.255.0 192.168.2.2

For an address to match, every octet in the mask that is “255″
must match the address exactly.
For this route, the first 3 octets have “255″, so it will accept any 10.1.0.X address.
10.1.1.10 will not match because the third octet is not “0″, it is “1″.

The route:
10.1.0.0 255.255.0.0 192.168.3.3

Only the first 2 octets in the mask are “255″, so it will accept any “10.1.X.X” address.
10.1.1.10 matches this statement.

But your answers:
Next hop 192.168.3.3:
+ 10.1.1.10
+ 10.1.4.6

does anybody know if there is a specific order to answer drag and drop questions? For example 1, 2, 3 not 2, 1, 3? Because by some reason VCE accepts only the specific order…

Next hop 192.168.2.2:
+ 10.1.0.14
+ 10.1.0.123

In ip route command there’s mask /24. So U will compare first 3 octets, 10.1.0_xxx is host’s space.

Can you explain the answer clearly ?

Thank you for your feedback.

10.1.0.14 – 10.1.0.123 – 10.1.1.10 – 10.1.4.6 <– all of them match entry with mask 255.255.0.0, but the router uses the most specific route first, so for 10.1.0.14 and 10.1.0.123, router will choose the entry with mask 255.255.255.0

ABOUT MY EXAM : what killed me was fear which should be discouraged. i had 3 sims that is, vtp, eigrp, acl2. thesame as in 9tut.

special thanks goes to this famous site.

Q:2
Q:6

I had this question today… see page 354 of Sybex CCNA Study Guide T. Lammle.

Quote:

“The dest address of a frame, from host A, will be the MAC of Fa0/0 of int of router A”

so dest MAC:

the .2222

making the source MAC:

the .7777

I like this site, but you gotta make sure the answers are correct..

thx so much

Today I have passed the CCNA. (860/825)
50 questions 3 labs (VTP, EIGRP, ACL). 35 from 9tut.

Also thanks a lot Brar and Sekhar (still valid from examcollection)

Ty again 9tut

from here none

You’re making me think, and I haven’t had enough caffeine yet. :)

Ok, so let’s rewrite these in most specific order…

R1(config)#ip route 10.1.0.0 255.255.255.0 192.168.2.2

This covers from 10.1.0.0 to 10.1.0.255, so 10.1.0.123 would fall in here.

R1(config)#ip route 10.1.0.0 255.255.0.0 192.168.3.3

This covers from 10.1.0.0 to 10.1.255.255, so:

10.1.1.10

10.1.1.14

10.1.4.6

10.1.0.123

would fall in here, but we already routed 10.1.0.123 because the most-specific route always wins.

R1(config)#ip route 0.0.0.0 0.0.0.0 192.168.1.1

would cover anything else not listed, which include:

10.2.1.3

10.6.8.4

So the answer they provided is incorrect because 10.1.1.14 would NOT be routed to 192.168.2.2…

On the other hand, while you are numerically correct in your answer (192.168.3.3 COULD accept 10.1.0.123), the router would choose the most-specific route and therefore make 192.168.2.2 the correct next hop for it.

I know all these things a router thinks about can certainly be a pain to step through and learn!

HTH,

If you notice in the last one for 10.1.0.0 the subnet mask is 255.255.0.0 which means the change is in the third octect. So IP Addresses with 10.1.x.0 will follow this route.
Look at the root for 10.1.0.0. Its subnet mask is 255.255.255.0. The change is in the fourth octect. So the choices with 10.1.0.x will follow this route. All other IPs will follow the default route of 0.0.0.0 0.0.0.0 which means all others that do no match. I hope this explained it well for you.

Thanks in advance