Combined Errata
Page 0CD
Chapter 2 Question 9 The book and CD says the answer is C, it should read B - HTTPS. The explanation is correct.
Page 41
Paragraph 5 Last sentence -The sentence reads, "It the packet is destined for a remote host, IP will look for the IP address of the default gateway (router) instead". The "It" in the beginning of the sentence should be an "If".
Page 51
Question 9 - Option F needs to be removed from the question.
Page 102
Chapter 2 Question 9 The book and CD says the answer is C, it should read B - HTTPS. The explanation is correct.
Page 129
Practice Example #2A Last column of table, all IPs should be 10.255.x.x not 10.0.x.x
Response...
Yes, this is correct.
After the ... in this practice example #2A on page 129, here is what it
should be
10.255.240.0
10.255.240.1
10.255.255.254
10.255.255.255 Page 132
Figure 3.2 it says "The mask 255.255.255.240 (/28) provides 14 subnets, ..." should be "The mask 255.255.255.240 (/28) provides 16 subnets, ..."
Page 140
Exam 640-801:
On page 140, the first sentence below Figure 3.9 should be changed from "From the list of IP addresses on the left of the figure,..." to "From the list of IP addresses on the right of the figure,..."
Page 146
Towards the bottom of the page: Existing: Host B IP address 192.168.10.34-62 should be Host B IP address 192.168.10.34-46
Page 152
Chapter 3 Question 11 - Updated 04/20/05
Support, the new question and explanation is after the old one - the
question, answer and explanations were wrong somehow. Please replace this
question in the next printing:
____________________________________________________________
Which of the following IP addresses fall into the CIDR block of
110.68.4.0/22? (Choose three.)
A. 110.68.8.32
B. 110.68.7.64
C. 110.68.6.255
D. 110.68.3.254
E. 110.68.5.128
F. 110.68.12.128
Answer: B, C, E.
New explanation:
A Class A network address with a /22 is 255.255.252.0. The subnets
in the third octet are 0, 4, 8, 12, etc. The network address in the
question is 110.68.4.0, with a broadcast of 110.68.7.255, since the
next subnet is 110.68.8.0. Answers B, C, and E are correct host IDs.
*NEW*
This is really an issue with your revised solution to an errata
problem already reported, regarding Question 11 in Chapter 3, pages
152 & 155. Your revised answer reads:
*NEW*
____________________________________________________________
Which of the following IP addresses fall into the CIDR block of
110.68.4.0/22? (Choose three.)
A. 110.68.8.32
B. 110.68.7.64
C. 110.68.6.255
D. 110.68.3.254
E. 110.68.5.128
F. 110.68.12.128
Answer: B, C, E.
New explanation:
A Class A network address with a /22 is 255.255.252.0. The subnets
in the third octet are 0, 4, 8, 12, etc. The network address in the
question is 110.68.4.0, with a broadcast of 110.68.7.255, since the
next subnet is 110.68.8.0. Answers B, C, and E are correct host IDs. Page 155
Chapter 3 Question 11 - Answer
Support, the new question and explanation is after the old one - the
question, answer and explanations were wrong somehow. Please replace this
question in the next printing:
____________________________________________________________
Which of the following IP addresses fall into the CIDR block of
110.68.4.0/18? (Choose three.)
A. 110.68.8.32
B. 110.68.7.64
C. 110.67.6.255
D. 110.66.3.254
E. 110.65.5.128
F. 110.64.12.128
Answer: B, C, E.
A Class A network address with a /18 is 255.255.192.0. The subnets in the
third octet are 0, 64, 128, 192. The network address in the question is
110.64.0.0, with a broadcast of 110.64.127.255, since the next subnet is
110.64.128.0. Answers B, C, and E are correct host IDs.
*NEW*
____________________________________________________________
Which of the following IP addresses fall into the CIDR block of
110.68.4.0/22? (Choose three.)
A. 110.68.8.32
B. 110.68.7.64
C. 110.68.6.255
D. 110.68.3.254
E. 110.68.5.128
F. 110.68.12.128
Answer: B, C, E.
New explanation:
A Class A network address with a /22 is 255.255.255.252. The subnets in the
fourth octet are 0, 4, 8, 12, etc. The network address in the question is
110.68.4.0, with a broadcast of 110.68.7.255, since the next subnet is
110.68.8.0. Answers B, C, and E are correct host IDs.
Page 187
The second command (line) from the bottom of the page should read “Router(config-line)#exit” instead of just Router(config)#exit
Page 189
"Router(Config)-if)#" should be "Router(Config-if)#"
Page 213
Question 11: In the multiple choice questions B and D, the router prompt should be
"SFRouter", not "SFRemote"
Page 218
Answer 11 should be C, not D
Page 235
Fourth line down should be 192.168, not 172.16
Page 236
End of first paragraph should be 192.168, not 172.16
Page 271
Line 3-4 Should read “debug ip rip” not “debug ip route”
Page 275
The text reads: "Table 5.3 shows our IP addresses for each router..." That should read Table 5.5.
Page 276
Step 1 reads, "...The 2621A router fa0/0 interface has an ip address of 172.16.10.2/24, and the 2501A Ethernet 0 interface is 172.16.10.1/24." This part of the question contradcits table 5.5.
response..
Yes, the static routes in step one should all go to 172.16.10.2
Page 282
Question #7, answer A. should read:
"RouterC will use an ICMP to inform HostA that HostC cannot be reached."
Page 326
4 lines from bottom. IP addresses should be 192.168.10.64 through 192.168.10.95
Page 517
Answer numbering is incorrect
The answer to question 3 (Written Lab 10) should be "access-list 10 deny host 192.168.15.5" where the IP address of the host is different.
Page 570
Q12. The command variables 180 and 40% have been transposed.
Page Authors Note
Chapter 4 -Enabling Passwords
> Under chapter 4, the book goes into enabling passwords on the console
> line and the vty line. One method suggest you enter the login command
> before entering the password, then it suggest entering the password
> then entering the login command. Which is the correct way of doing
> this on the ccna exam????
response ..
It can be either way, as mentioned. Cisco asks it both ways, which is why I
show it both ways. The latest IOS only supports the login after the
password.
Todd Page 135,137,139
On pages 135 and 137, the tables at the top of the page (From left to right: Subnet, Mask, Subnets, Hosts, Block) are incorrect in the Subnets column. It seems as though each number is listed as two less than it should be. For example: A subnet with mask 192 is listed as having only 2 available subnets, even though the block size is 64. As the author stated on page 136, "With a block size of 64, you can only have four networks, and so on, ..."
Response..
Yes, those tables were not updated in accordance with the ip subnet-zero
rule, so the 192 mask would provide four subnets, etc.
Number of subnets needs to be +2
Right now, they are 2, 6, 14, 30, 62…..please change to 4, 8, 16, 32 and 64.
This is for both the CCNA Study Guide, 5th Edition (0782143911) and CCNA Study Guide, Deluxe Edition (078214392X).
Page 155, Question 11
Which of the following IP addresses fall into the CIDR block of
110.68.4.0/22? (Choose three.)
A. 110.68.8.32
B. 110.68.7.64
C. 110.68.6.255
D. 110.68.3.254
E. 110.68.5.128
F. 110.68.12.128
Answer: B, C, E.
A Class A network address with a /22 is 255.255.252.0. The subnets
in the third octet are 0, 4, 8, 12, etc. The network address in the
question is 110.68.4.0, with a broadcast of 110.68.7.255, since the
next subnet is 110.68.8.0. Answers B, C, and E are correct host IDs.
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