Java Expressions
Java Language
Computer science but math
Networking / Hardware
Miscellaneous
1
What is the value of the following expression?
3 - 5 * 3 / 3
-2
1
What are the two primitive types that allow for non-integer values?
float or double
1
What is the name of the sequence where each number is the sum of the previous two, beginning with 0, 1, ...
The Fibonacci sequence.
1
What does http stand for?
Hypertext transfer protocol.
1
What isn't the name of base 2?
Anything but "binary".
2
What is the value of the following expression?
(8 % 3) % (7 % 6)
0
2
What is the capitalization convention for typical java variables called? (for example, aVariableName)
camelCase
2
What is the greatest common divisor of 30 and 12?
6
2
What is the quantum equivalent of a binary bit?
A qubit.
2
What is the room number of this room? (letter and number)
A101
3
What are the boolean values a, b, and c if the following expression is true?
(a && b || c & & a) && !(a && c || c)
a is true, b is true, c is false.
3
What is the mechanism that Java uses to automatically reclaim memory occupied by objects that are no longer reachable?
Garbage collection.
3
This graph has 7 vertices, with an edge between each vertex. How many edges are there?
21
The general formula for n vertices is n(n-1)/2 (which is similar to the triangle number formula).
3
What is a Cross-Site Scripting (XSS) attack?
An attacker injects malicious JavaScript code into a website, causing the code to run in another user's browser.
3
What is 101012 in decimal?
21.
4
What is the value of the following expression in binary?
0b1010 << 2 + 1
1010000
4
What keyword is used to skip the current iteration of a loop?
continue
4
What is the millennium prize problem that asks if all problems with quickly verifiable solutions can be quickly solved?
P versus NP problem.
4
What do HTTP status codes beginning with 4 signify? (For example, 404 or 403)
A client error.
4
How many student computer monitors are in this room?
29.
5
What does this code print?
int a = 3;
System.out.println(a = 5 == 5 ? a : 2*a);
3
5
What does the goto keyword do in Java?
Nothing.
5
What is a Hamiltonian path?
A path that visits each vertex exactly once.
5
Order these digital storage units by ascending number of bits (smallest to largest):
- Terabyte
- Gigabyte
- Yottabyte
- Zettabyte
- Petabyte
- Exabyte
- Gigabyte
- Terabyte
- Petabyte
- Exabyte
- Zettabyte
- Yottabyte
5
What is the name of base 4?
Quaternary