CYBERSECURITY
What does TLS stand for in HTTPS?
Transport Layer Security
What does CRUD stand for in database operations?
Create, Read, Update, Delete
What does MAC stand for in networking?
Media Access Control
What year was email first used?
1971
In IPv6, how many bits are in an address?
128
What’s the name of the hashing algorithm that Bitcoin uses?
SHA-256
What programming language introduced the concept of “write once, run anywhere”?
Java
In fiber-optic cables, data is transmitted using what?
Light
Who coined the term “cyberspace”?
William Gibson (1982 short story “Burning Chrome”)
What does the acronym CAPTCHA stand for?
Completely Automated Public Turing test to tell Computers and Humans Apart
What cybersecurity framework was developed by NIST to guide critical infrastructure protection?
NIST Cybersecurity Framework (CSF)
In Linux, what command is used to change file permissions?
chmod
What is the maximum length of a standard Cat5e Ethernet cable?
100 meters (328 feet)
What was the first computer virus ever discovered in the wild?
Elk Cloner (1982)
What company originally developed Unix?
AT&T’s Bell Labs
Stuxnet was the first known cyberweapon targeting what type of system?
Iranian nuclear centrifuges / SCADA systems
What operating system runs on most supercomputers worldwide?
Linux
What does ECC RAM stand for and what does it do?
Error-Correcting Code RAM: detects and corrects memory errors
What was the original name of JavaScript?
Mocha (then LiveScript, then JavaScript)
What does the “S” in IoT’s MQTT protocol stand for?
Telemetry (Message Queuing Telemetry Transport)
What year did the first known large-scale DDoS attack take place?
2000 (against Yahoo, eBay, CNN, etc.)
The term “Turing Complete” refers to what?
A system capable of performing any possible computation given enough resources
What company invented the first commercially successful microprocessor?
Intel (4004, in 1971)
Who developed the first algorithm intended to be executed by a machine?
Ada Lovelace
What is the maximum number of hosts supported on a standard /24 subnet?
254 (28– 2)