ACL's and Hex
bearfan
Member Posts: 70 ■■□□□□□□□□
in CCNA & CCENT
Hi Everyone-
I'm currently studying hard for 640-821. I'm taking it July 23.
Is ACL's on the Intro exam, or just ICND? I know its tested hard, but not sure its on the INTRO exam.
Also, do you have to know how to do any complex hex to decimal or binary conversion?
Not something simple like 11, but complex (122, 128, etc).
I'm currently studying hard for 640-821. I'm taking it July 23.
Is ACL's on the Intro exam, or just ICND? I know its tested hard, but not sure its on the INTRO exam.
Also, do you have to know how to do any complex hex to decimal or binary conversion?
Not something simple like 11, but complex (122, 128, etc).
Comments
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bearfan Member Posts: 70 ■■□□□□□□□□Example: Number 141.
141/16 = 8 Remainder 13
Hex# = 8D
Divide the number by 16. Then use that number and the remainder number to get the Hex#.
But are ACL's on the INTRO test? Or is that just the ICND test? -
tech-airman Member Posts: 953bearfan wrote:Example: Number 141.
141/16 = 8 Remainder 13
Hex# = 8D
Divide the number by 16. Then use that number and the remainder number to get the Hex#.
But are ACL's on the INTRO test? Or is that just the ICND test?
bearfan,
Decimal to Hexadecimal conversions are easier if you add binary as an intermediate step. Let's take your decimal example of 141 decimal.
Step 1: Convert decimal to binary
141/2 = 70 1
070/2 = 35 0
035/2 = 17 1
017/2 = 08 1
008/2 = 04 0
004/2 = 02 0
002/2 = 01 0
001/2 = 00 1
Reading the remainders from bottom to top, 141 decimal = 10001101 binary
Step 2: Split up the binary byte into two separate nibbles.
10001101 byte = 1000 1101
Step 3: Convert each nibble into a hexadecimal digit.
First nibble = 1000 = 0x8
Second nibble = 1101 = 0xD
Step 4: Combine the two hexadecimal digits
141 decimal = 10001101 binary = 0x8D hexadecimal
Since I took the 640-801 CCNA exam, I have no clue where the 640-821 INTRO exam ended and where the 640-811 ICND exam started. -
bearfan Member Posts: 70 ■■□□□□□□□□I'm glad I got the hexadecimal down now.
Does anyone else know if I have to worry about ACL's for the Intro test or is that just on the ICND test? I find ACL's harder than any other topic, and I'm hoping I don't have to think about it until ICND. -
Pash Member Posts: 1,600 ■■■■■□□□□□bearfan,
Again, all you can do is read the exam blueprints. If it's stated on there that the INTRO expects you to know something about it, then read up on it.DevOps Engineer and Security Champion. https://blog.pash.by - I am trying to find my writing style, so please bear with me.