Khan Academy
Khan Academy: Random Numbers
Practice using random numbers for programs written in the AP CSP pseudocode, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Mathematical Expressions
Practice using mathematical expressions for programming in the AP CSP pseudocode, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Domain Name System (Dns)
Check your understanding of the DNS (domain name system) and DNS spoofing, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Ip Addresses
Check your understanding of IP addresses (v4 and v6), in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Storing Strings in Variables
Practice storing strings in computer programs, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Categorizing Run Time Efficiency
Check your understanding of run time efficiencies and categorize which ones are reasonable in these practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Copyright, Licenses, and Digital Media
Check your understanding of copyright, DMCA, Creative Commons and open source licenses in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Expressing an Algorithm
Check your understanding of expressing simple algorithms in flow charts, natural language, and pseudocode, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Computing Basic Statistics
Check your understanding of what simple statistics can be computed on a data set, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Finding Patterns in Data Sets
Check your understand of the ways you can find patterns in data sets (like trends and correlations) in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Files and Sizes
Check your understanding of files types, file metadata, and file sizes (bytes/kilobytes/etc), in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Hypertext Transfer Protocol (Http)
Check your understanding of HTTP requests and responses, in this set of practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Http Secure (Https)
Check your understanding of HTTPS (secure web browsing), in this set of practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: From Electricity to Bits
Check your understanding of using wires to represent bits, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Verifying an Algorithm
Practice verifying whether algorithms are correct with empirical analysis and logical reasoning, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Solving Hard Problems
Check your understanding of when algorithms use heuristics and which problems are undecidable, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Transport Layer Security (Tls)
Check your understanding of Transport Layer Security (TLS) / Secure Sockets Layer (SSL), in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Transporting Bits Over Wires
Check your understanding of bandwidth and latency in internet connections, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Transmission Control Protocol (Tcp)
Check your understanding of packet sending on the internet with the TCP (Transmission Control Protocol), in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: Symmetric Encryption
Check your understanding of symmetric encryption techniques, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: The Building Blocks of Algorithms
Practice using the building blocks of algorithms (sequencing, insertion, and selection), in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: The Building Blocks of Algorithms
Learn the building blocks of algorithms in computer science.
Khan Academy
Khan Academy: Lossless Bit Compression
Computers represent all data in binary, so all types of files, from text to images to videos, are ultimately sequences of bits. Regardless of whether the bits represent a document or a GIF, computers can use a bit compression technique...
Khan Academy
Khan Academy: Unit: Online Data Security
Readings and practice problems about online data security.