Which statement about trees is false?

a. A tree is a nonlinear, two-dimensional data structure.
b. Each node in a tree contains two links.
c. The children of a node are called siblings.
d. A node with no children is called a leaf node.


b. Each node in a tree contains two links.

Computer Science & Information Technology

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Which of the following RAID configurations combines four or more disks and can recover from failure even if two of the disks fail?

A) RAID 1 B) RAID 3 C) RAID 5 D) RAID 6

Computer Science & Information Technology

Which of the following statements is false.

a. Experience has shown that the most challenging part of solving a problem on a computer is developing an algorithm for the solution. b. Once a correct algorithm has been specified, creating a working Python pro-gram from the algorithm is typically straightforward. c. A requirements statement describes how a program should operate but not what the program is supposed to do. d. Variables for totaling and counting normally are initialized to zero before they’re used.

Computer Science & Information Technology

Which of the following languages is used primarily for scientific and engineering applications?

a. Fortran. b. COBOL. c. Pascal. d. Basic.

Computer Science & Information Technology

Windows Firewall will enable communication with other programs that are on a(n):

A) safe list B) secure list C) exception list D) protected list

Computer Science & Information Technology