wildcards

absolut

Hi,

I'm studying the exan 640-801 to pass the CCNA. I have a doubt

What's means this wildcard?

0.0.0.254

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Comments

dshevnock

That wildcard mask would mean that the first three octets would be matched. The first seven bits of the fourth octet would be ignored, but the last bit would be matched. The only way where I could see you would ever want to use a wildcard mask like this is if you have a network that has a lot of subnets, with very few hosts per subnet. In what context was this wildcard mask being used in your study material?

absolut

In a question of a **** exams.

Another question.

Which exams do you remocomend me to practice the CCNA?

Thank you very much

janmike

absolut!,

If I were you I'd edit this post very quickly, and then get some Transcender practice to work with.

Cisco practice here, http://www.techexams.net/pexams.php, is free.

But, leave those things alone. They're the cigarette smoke of certifications! Soon or later, they'll kill your career.

absolut

the **** exams are good to prepare the exam?

Thanks

janmike

No. They're not good. Using those are cheating and they're illegal. These are made up of stolen material. If Cisco should find out that you've used them, they'll never certify you.

EdTheLad

absolut wrote:

Hi,

I'm studying the exan 640-801 to pass the CCNA. I have a doubt

What's means this wildcard?

0.0.0.254

Getting back to the original question this mask doesnt make sense.
As far as im aware wildcard masks are configured in blocks
i.e blocks of 4,8,16,32,64,128,256

When configuring them you minus 1 therefore the only available masks are
3,7,15......255

Not possible to use 254.

If im wrong let me know but i think im right!!

ziggy

I would have to agree with ed_the_lad on his reply....

the wildcard mask 0.0.0.254 would convert to a binary number 0.0.0.11111110 which would not be a valid wildcard mask.

When using a wildcard mask, in terms of the binary number, the zero's should fillup the left, and the one's should begin with the right most area and work to the left.

eg. a wildcard mask of 0.0.0.15

00000000.00000000.00000000.00001111

dmaftei

ed_the_lad wrote:

Getting back to the original question this mask doesnt make sense.

It does. See my reply in the following thread:
http://www.techexams.net/forums/viewtopic.php?t=9223