Ap Computer Science Principles 2020 Practice Exam 1 Mcq

Symmetric encryption uses a single shared key for both encryption and decryption. Public/Private key pairs are asymmetric encryption.

Reducing the runtime of a program generally means the time complexity (the number of steps relative to input size) has been reduced, making the algorithm more efficient. ap computer science principles 2020 practice exam 1 mcq

| Feature | Description | |---------|-------------| | | Mimics real exam pacing | | Question-aligned to 2020 CSP Big Ideas | 1: Creative Development, 2: Data, 3: Algorithms/Programming, 4: Computing Systems/Networks, 5: Impact of Computing | | Instant rationale | After each answer → explains why correct/incorrect (references 2020 scoring guidelines) | | Performance dashboard | Shows strength by Big Idea + computational thinking practice (e.g., algorithm design, debugging, abstraction) | | Missed question bank | Auto-saves errors for targeted review | Symmetric encryption uses a single shared key for

Which of the following describes the concept of "redundancy" in the context of the Internet? A) Having multiple paths between devices so that if one path fails, data can take another route. B) Storing backup copies of data in a secure location. C) Using error-checking bits to ensure data integrity. D) Assigning the same IP address to multiple devices. | Feature | Description | |---------|-------------| | |