Which of the following is the maximum speed available from a full T1 line?
A. 1.544Mbps
B. 5.23Mbps
C. 765Kpbs
D. 10.73Mbps
Answer: A. 1.544Mbps
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Suppose that a file initially contains r=120,000 records of R=200 bytes each in an unsorted (heap) file. The block size B=2400 bytes, the average seek time s=16 ms, the average rotational latency rd=8.3 ms and the block transfer time btt=0.8 ms. Assume that 1 record is deleted for every 2 records added until the total number of active records is 240,000.
(a) How many block transfers are needed to reorganize the file? (b) How long does it take to find a record right before reorganization? (c) How long does it take to find a record right after reorganization?
Which of the following should NOT be done if Access give you a security warning about your database?
A) Run a virus scan on any file before you say it should be trusted. B) If you know the database is safe, you can trust a database permanently by storing it in a trusted location. C) Do not click Enable Content in the security warning if you are not sure if the database is safe. D) Enable the content. Nothing bad will happen, even if there is a virus embedded in the file.
When information is too lengthy to insert in your note, you can ________ it
Fill in the blank(s) with correct word
Whenever you need to use the logical size of the bag within a class definition, run len(self) instead of referring directly to the instance variable self.size.
Answer the following statement true (T) or false (F)