Discuss the factors to be taken into account when deciding to which NTP server a client should
synchronize its clock.
What will be an ideal response?
The main factors to take into account are the intrinsic reliability of the server as a source of time values, and
the quality of the time information as it arrives at the destination. Sanity checks are needed, in case servers
have bugs or are operated maliciously and emit spurious time values. Assuming that servers emit the best time
values known to them, servers with lower stratum numbers are closest to UTC, and therefore liable to be the
most accurate. On the other hand, a large network distance from a source can introduce large variations in
network delays. The choice involves a trade-off between these two factors, and servers may synchronize with
several other servers (peers) to seek the highest quality data.
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?Suppose a retailer who has no technology expertise wishes to set up an online presence for his business. He ________.
A. ?should get the necessary hardware and software B. ?learn to use Apache web server C. ?should learn web technology D. ?can use a hosting service to set up the site
List the diagrams included in a structural diagram.
What will be an ideal response?
Which of the following is NOT part of a ScreenTip of a selected image?
A) the size of the image in pixels B) the date the image was created or downloaded C) the resolution of the image D) the storage space of the image
When working with smaller screens, you can ________ the ribbon so that only the tab names are visible
A) pin B) minimize C) expand D) restore