A two-dimensional code containing many rows and columns of black and white squares is a ________ code
A) smartphone B) quick response C) recognition D) bar
B
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Write SQL update statements to do the following on the database schema shown in Figure 1.2.
(a) Insert a new student <'Johnson', 25, 1, 'MATH'> in the database. (b) Change the class of student 'Smith' to 2. (c) Insert a new course <'Knowledge Engineering','COSC4390', 3,'COSC'>. (d) Delete the record for the student whose name is 'Smith' and student number is 17.
What is the value of count when the following loop is exited?
``` var count = 20; while( count < 200) count*=3; ``` a. 20 b. 180 c. 540 d. 201
String data is always enclosed in ____.
A. parenthesis B. curly braces C. quotation marks D. brackets
What are TCP/IP application processes such as FTP and SMTP sometimes called?
A. link layer protocols B. network hosts C. network services D. protocol IDs