Errata
pp. 14-18 The letter “r” in the MAC addresses in figures 1-18, 1-19, 1-22, and 1-23 should be “d” (or any letter between a-f, really).
p. 67, question 10, answer should be C, not B.
p. 88, question 7, answer choice C should say “switches” rather than “hubs.”
p. 89, question 7, correct answer explanation last sentence should read “. . . enables two switches. . .” rather than “. . . enables two hubs. . .”
p. 118, last sentence of first paragraph should say: “The rack in Figure 5-11 . . .” (Change in bold.)
p. 185 Figure 6.29 should be comparing Computer A to Computer C, not B. This typo is in three spots on the image.
p. 192 Text for Figure 6-36 should be: “Figure 6-36 shows IP addresses for each . . .” (Delete “all the” for accuracy.)
p. 194 Second paragraph should say “. . . using 001 and 011 . . .” rather than “. . . using 000 and 001 . . .”
p. 245 A paragraph got lost in the editing process and provides the basis for Question 7:
OSPF uses areas, administrative groupings of interconnected routers, used to help control how routers reroute traffic if a link drops. All OSPF networks use areas, even if there is only one area. When you interconnect multiple areas, the central area—called the backbone—gets assigned the Area ID of 0 or 0.0.0.0. (Note that a single area also gets Area ID 0.) All traffic between areas has to go through the backbone.
p. 383 Last sentence should be: SFTP uses TCP port 22. (Change in bold.)
p. 815 Remove the first “cables,” from the Fibre Channel definition; it’s listed properly a couple of words later.