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Don't waste your hard earned cash.
Even though the Exam Cram books are not meant to be primary references, such titles should be (generally) error-free and well-organized. This text is neither and gives the appearance of having been introduced early solely ensure a place on the bookshelf before the competition.
Ron Gilster's CCNA's for Dummy's book is much better as a second reference and has significantly more detail, and is better organized for that quick, day-before-the-test review.
IMHO Tod Lammle's CCNA Study Guide is a best bet as a primary text.
Don't waste your hard earned cash. This one is disjointed, error-prone, and as mentioned in my title... One Big Sleep.
1. Grab Tod Lammle's CCNA Study Guide as your primary text.
2. Even though you won't want people to see the title on your shelf, Gilster's CCNA's for Dummy's book is much better as a second reference.
Well, not all is lost. At least I can use Sheldon's book to kindle a fire next winter...
The astronomer Francesco Sizi, a contemporary of Galileo, argues that
Jupiter can have no satellites:
There are seven windows in the head, two nostrils, two ears, two
eyes, and a mouth; so in the heavens there are two favorable stars, two
unpropitious, two luminaries, and Mercury alone undecided and indifferent.
From which and many other similar phenomena of nature such as the seven
metals, etc., which it were tedious to enumerate, we gather that the number
of planets is necessarily seven. [...]
Moreover, the satellites are invisible to the naked eye and
therefore can have no influence on the earth and therefore would be useless
and therefore do not exist.
When it's dark enough you can see the stars.
-- Ralph Waldo Emerson,