You can think of an interface as a class that is totally ____________.
Fill in the blank(s) with the appropriate word(s).
abstract
You might also like to view...
Write a recursive SQL query that returns tuples of the form From,To,Distance, which represent direct or indirect ?ights (i.e., ?ights composed of one or more segments) and the aggregate distance over all segments for each such ?ight. (If there are several ways to reach B from A and the total distance is di?erent in each case, then the output would have several tuples such as A,B,1000,
A,B,1500, etc.) The exact query is: Find al l tuples of the above form provided that the distance is less than 10,000 . Consider the following relational schema:
DirectFlight(From,To,Distance)
A(n) ________-oriented protocol requires two computers to exchange control packets.
Fill in the blank(s) with the appropriate word(s).
Together, ____ and multiplexer circuits enable us to build computer systems that execute the correct instructions using the correct data values.
a. compiler b. encoder c. iteration d. decoder
For two factor authentication, which of the following is considered something the user is?
A. password B. USB stick C. smart card D. iris scan