CS 105 Final Review

If I'm writing a program that will use a file provided by the user, what Python functions do I want to be sure to use?

• open() - to open the file

• input() - to get the file name from the user

• print() - to print the file contents

• close() - to close the file once I'm done with it

Which of these code snippets is NOT a valid print statement?

• 
• 
• 
• 

Entering a security code after logging into a website is a good example of the website accomplishing which security goal?

• Authentication

• Non-Repudiation

• Confidentiality

• Integrity

You are at an airport trying to transfer money between bank accounts. What can you do to increase the security of your transaction?

• Use airport WiFi

• Avoid working with personal data in public settings

• Use airport WiFi with a VPN enabled

• Click on every ad that pops up on your computer

You are a hacker trying to gain access to Stanford's computer network. You drop USB sticks with a Stanford logo in the parking lot outside the freshman dorms. This is an example of what attack mechanism?

• Social Engineering

• Phishing

• Zero-Day Exploit

• Ransomware

Answer explanation

Phishing is a type of social engineering attack, but because the hacker isn't actually pretending to be someone they aren't, social engineering is a better answer here.

Success! Some silly Stanford student picked up your USB and plugged it into their laptop. In order for your malware to spread, you put a _____ on the USB so that it will spread on its own to other laptops connected to Stanford's network.

• bug

• Trojan horse

• virus

• worm

Oh no! This Stanford student has very robust cybersecurity measures on their laptop. Your attack was foiled by the computer's _____, which warned the user about the malware from the USB.

• password

• proxy server

• air-gap

• firewall

A good software program has _____, which means that each section of the code is broken up into smaller chunks that only handle one task each.

• malware

• encapsulation

• modularity

• integrity

We call our models of Cloud Computing "Utility Computing" and "Grid Computing" because...

• all of a company's computing power must be on-site connected to the "grid" and "utilities."

• similar to "utility" companies and the electric "grid," these computing services are on demand and pay-per-use.

• the network infrastructure is laid out in a "grid" to provide the maximum "utility."

• similar to "utility" companies and the electric "grid," we must have accurate predictions of how much compute we need ahead of time.

Answer explanation

Only option B (green) is entirely true. Utility and grid computing are named for utility companies, but the rest of Option D is the opposite of how the electric grid works---you don't tell an electricity company that you need more electricity, you just use it. Options A and B are nonsense I made up.

You want to build the next big cloud computing start-up. Which of the following is NOT a model of cloud computing you could base your company on?

• Google as a Service (GaaS)

• Software as a Service (SaaS)

• Serverless

• Platform as a Service (PaaS)