Under MS-DOS, the boot routine is stored on the __________ sector of each disk.
a. first
b. second
c. third
d. fourth
a. first
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Show that step 2 of the method used in Section 16.3.1 to perform a join using a semi- join does in fact generate the semi-join. For simplicity, assume that the join we are attempting is a natural join. That is, prove that ?attributes(T1) (T1 T2) = ?attributes(T1)(T1 ?attributes(join-condition)(T2))
What will be an ideal response?
Free blocks on a UNIX disk are tracked in the __________.
a. super block b. i-list c. kernel d. shell
Answer the following statements true (T) or false (F)
The pipe (|) character redirects the output of the command preceding it.
What is one major indicator of a weak cellular signal?
A. Dropped connections B. High transfer speeds C. Apps freezing D. Constant reboots