Errata

Cat5 wire order is named as Standard 568B on page 13, while on page 15 it is named as Standard 586B(A reversal of digits). The name on page 15 agrees with the answer in the crossword on page 36. However this leads me to believe that both standards must be incorrectly named on page 13. I would be curious to know which is correct. Thank-you for accepting this.

Steve

Note from the Author or Editor:
568B is the correct nomenclature for pages 13, 15, and the answer on page 48, not 586B.

586B should be 568B

The answer for 10 across should be Standard568B but this will mess with the answer for 11 down which is correct. The puzzle will need to be modified for the correct answer.

Not sure what the following sentence (last sentence in 3rd A in the No Dumb Questions section) is trying to convey:

"But keep reading, there are other tools we haven't covered yet that you really need to see on a wire then?"

Note from the Author or Editor:
Should be "But keep reading, there are other tools we haven't covered yet that you can use to see what is really on the wire."

"To find comon ASCII codes..."

should be:

"To find common ASCII codes..."

Note from the Author or Editor:
change comon to common

The fourth question in the "Be the Computer" exercise is different on the exercise page than it is on the solution page.

On the exercise page, it's "1 0 _ 0".

On the solution page, it's "0 1 1 0"

Note from the Author or Editor:
The second binary code in the right column should be 0110

The third 1 is missing in this block. Add it.

Second line of second paragraph of third No Dumb Question answer should be "uses an 8B10B..." instead of "uses and 8B10B..."

Note from the Author or Editor:
Second line of second paragraph of third No Dumb Question answer should be "uses an 8B10B..." instead of "uses and 8B10B..."

In the diagram, the content of destination address has been swapped with that of the source address.

Note from the Author or Editor:
The source mac address and destination address on page 158 Sharpen exercise need to be swapped.

The source hex code to translate is as follows: c0 a8 01 2f
It is incorrectly translated as 192.168.1.41.
The correct translation is 192.168.1.47

i.e. 0x2f = 47 and not 41

Note from the Author or Editor:
It was an extraneous period that escaped

192.168.1.41 should be 192.168.1.47

There is an extra 1 in the 192 IP Address. It should be 129.168.1.47

Note from the Author or Editor:
Should be 192.168.1.47... Have to fix my own errata submission ;)

In the sharpen your pencil example on page 220 one of the pair 4 hosts is shown in the listing as 11.48.124.65 but in the answer at the bottom it is shown as 11.48.124.62.

Note from the Author or Editor:
Change the answer to 11.48.124.65

the default gateway to the lowermost device should be 192.168.200.1 instead of 192.168.100.1 (which would be a different network).

Note from the Author or Editor:
Change the default gate address on the computer on the bottom part of the diagram to 192.168.200.1

7th row down on the lower table.

The packet destination IP is listed as 192.168.6.176 on page 273, then 192.168.3.176 on page 274

Note from the Author or Editor:
See other Errata submission for correction.

The packet destinations in the lower table are different in the answer table on pg 274 to the question table on pg 273

for the 5th from bottom, and 2nd from bottom.

192.168.6.176 in Q - 192.168.3.176 in A

192.168.8.12 in Q - 192.168.9.12 in A

I have had trouble using this book due to the large number of error I am unsure what information I can trust.

Note from the Author or Editor:
Change the lower table to match the lower table on page 273 with regards to the Packet Destination IP column.

The protocol is incorrectly spelled as "EIRGP" in the line " These include OSPF, IGRP, EIRGP, and BGP." It should be corrected as "EIGRP".
The related following line is correct "IGRP and EIGRP are Cisco proprietary routing protocols."

Note from the Author or Editor:
The protocol is incorrectly spelled as "EIRGP" in the line " These include OSPF, IGRP, EIRGP, and BGP." It should be corrected as "EIGRP".

in the example for network #4 at the bottom of page 277 it says the network has 52 routers, but in the solution on page 278 it indicates the network has 15 routers. This makes a difference when choosing RIP for your routing protocol given the 15 hop maximum for RIP

Note from the Author or Editor:
The text for network #4 should have the 52 changed to 15

The pool is missing a MX and an A to correctly solve the puzzle

Note from the Author or Editor:
Add and MX and an A to the pool on page 311.

In several spots on page 313, "DNS Nameserver" is incorrectly spelled "DNS Namserver".

The IP address of mail.hfhealthclub.com should be 10.0.1.7 and not 10.0.1.2.

Note from the Author or Editor:
The label of the image of the mail server should have an IP address of 10.0.1.7.