Which of the following are benefits of using VPNs? (Choose all that apply.)

a. Eliminates the need for expensive dedicated WAN links
b. Uses advanced encryption and authentication protocols
c. Supports DSL and cable
d. Cost savings using ISDN and PSTN connections
e. Easy to add new users
f. Cost savings using PVCs


A,B,C,E

Computer Science & Information Technology

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Order the given Big O complexity values by efficiency.

a. O(1) -> O(log n) -> O(n) -> O(3^n) b. O(n) -> O(3^n) -> O(log n) -> O(1) c. O(3^n) -> O(n) -> O(log n) -> O(1) d. O(n) -> O(3^n) -> O(1) -> O(log n)

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In the accompanying image of a Microsoft Word 2016 document, Box A points to the _____.? ?

A. ?title bar B. ?status bar C. ?taskbar D. ?scroll bar

Computer Science & Information Technology

Solve the following time-rate-distance problems using the IPO method. Ignore time zones.

How many cubic yards of concrete should you order to make a foundation of a building? The concrete is to be poured into a trench with straight sides 3 feet deep and a flat bottom 3 feet wide. The outside of the trench forms a square 30 feet on a side, when viewed from the top.

Computer Science & Information Technology

A data series is a collection of related data points

Indicate whether the statement is true or false

Computer Science & Information Technology