CS50 (CS50)

CS50, lecture 7: SQL Written Exam A Graded Answers. schema - CORRECT ANSWER decide on the _________, or format, of our data in advance by choosing the columns database - CORRECT ANSWER a file or program that stores data flat-file database - CORRECT ANSWER a database that only contains one table of data; example: CSV files KeyError - CORRECT ANSWER error raised when a dictionary key is not found canonicalize - CORRECT ANSWER standardizing data (e.g. all uppercase, strip whitespac...

Harvard CS50: AI With Python Review Practice Exam Questions. Agent - CORRECT ANSWER entity that perceives its environment and acts upon that environment. state - CORRECT ANSWER a configuration of the agent and its environment. initial state - CORRECT ANSWER the state in which the agent begins. actions - CORRECT ANSWER choices that can be made in a given state. Transition Model - CORRECT ANSWER a description of what state results from performing any applicable action in any state...

CS50, lecture 2: Arrays Questions And Answers. command line argument an input to a program on the command-line as extra words after the program's name in the command itself (run in terminal) Preprocessing Compiling step 1 of 4; a text substitution tool that instructs the compiler to do required __________ before the actual compilation; commands start with hash symbol (#) Compiling Compiling step 2 of 4; takes our source code (e.g. human-written code in C), and converts it to anothe...

Harvard CS50 Flask Written Exam. Flask - CORRECT ANSWER For python. Framework Why is flask important? - CORRECT ANSWER Easier to find information Where can you find flask? - CORRECT ANSWER

CS50, lecture 5: Data Structures Study Practice Test Quiz. Data structures more complex ways to organize data in memory, allowing us to store information in different layouts. linked list A linear data structure, much like an array, that consists of nodes, where each node contains data as well as a link to the next node, but that does not use contiguous memory. With ______ _________, we can store a list of values that can easily be grown by storing values in different parts of memory....

Cs50 week 1 Questions And Answers. Argument - CORRECT ANSWER costumization within a function n- - CORRECT ANSWER hits return on your keyboard While - CORRECT ANSWER do over and over when ______ is the case True - CORRECT ANSWER is always true, no matter what, so "while (true)" leads to a forever loop For - CORRECT ANSWER functions like 'while' but for defiente loops For loop - CORRECT ANSWER (int i = __; i <> __; i++) when i is less than a certain number, lets you...

CS50 QUESTIONS AND ANSWERS. Define "Function." - CORRECT ANSWER o Functions are action verbs that tell you to do some sort of action (ex. pick up, call, open to, etc) Define "conditionals." - CORRECT ANSWER o Conditionals are like a crossroad where we use "if" and "then" statements/concepts What are Boolean expressions? - CORRECT ANSWER o Boolean expressions are "yes"/"no" questions What can help us write, run, and translate our code? - CORRECT ANSWER Tools called IDEs,...

CS50 Harvard EDX Written Exam Questions and Answers. What is a byte? - CORRECT ANSWER 8 bits what does the computer use physically to represent or store values? (a tiny little switch) - CORRECT ANSWER transistor functions - CORRECT ANSWER verbs or actions that tell the computer what to do conditions - CORRECT ANSWER forks in the road, either this or that boolean expression - CORRECT ANSWER questions in code with yes or no answers (true/false) loop - CORRECT ANSWER a cycle doi...

Harvard CS50 Week 1: Data Types & Variables Questions and Answers. What is an "int?" - CORRECT ANSWER -The int data type is used for variables that will store integers - Integers always take up 4 bytes of memory(32 bits). Range of information that can be stored is limited to 32 bits What is an "unsigned int?" - CORRECT ANSWER - qualifier that effectively doubles the range of positive variables of that type at the expense of negative values What is a "char?" - CORRECT ANSWER - u...

Harvard CS50 Week 0 Notes Study Guide. Problem Solving - CORRECT ANSWER What is computer science on a fundamental level? It is the process of taking some input (details about are problem) and generate some output (the solution). - CORRECT ANSWER What is Problem Solving in CS terms? The numbers 0-9. Once we count up past 9, we carry a 1 to the left and start at 0 again (i.e. the number "10") - CORRECT ANSWER What numbers are represented in the base 10 (otherwise known as decimal) sys...