technical quiz

What is the primary difference between TCP and UDP protocols?

• TCP is faster than UDP.

• TCP is connection-oriented, while UDP is connectionless.

• TCP is used for email, while UDP is used for web browsing.

• TCP is more secure than UDP.

What is the purpose of a "virtual machine" (VM)?

• To emulate a physical computer system.

• To speed up data transfer over a network.

• To protect against malware.

• To create backups of data.

In object-oriented programming, what does "polymorphism" mean?

• The ability of an object to take on many forms.

• The process of creating new objects from existing ones.

• The way objects interact with each other.

• The rules for defining classes and objects.

What is the significance of the "Big O" notation in algorithm analysis?

• It describes the speed of an algorithm in milliseconds

• It describes how an algorithm's performance scales with input size.

• It measures the amount of memory an algorithm uses.

• It measures the amount of memory an algorithm uses.

What is a "race condition" in concurrent programming?

• A situation where multiple threads access and modify shared data simultaneously, leading to unpredictable outcomes.

• A type of deadlock where two or more threads are blocked indefinitely, waiting for each other.

• An error that occurs when a program tries to access memory that it doesn't have permission to access.

• A security vulnerability that allows an attacker to gain control of a system.

What is the difference between symmetric and asymmetric encryption?

• Symmetric encryption is faster, while asymmetric encryption is more secure.

• Symmetric encryption uses one key for encryption and decryption, while asymmetric encryption uses two separate keys.

• Symmetric encryption is used for data at rest, while asymmetric encryption is used for data in transit.

• Symmetric encryption is used for small files, while asymmetric encryption is used for large files.

What is "Docker" primarily used for?

• Creating and managing containers.

• Deploying and scaling applications in the cloud.

• Building and testing software.

• Managing databases.

What is "SQL injection"?

• A type of virus that targets SQL databases.

• A vulnerability that allows attackers to execute arbitrary SQL code.

• A technique for optimizing SQL queries.

• A method for backing up SQL databases.

What is the difference between a "stack" and a "heap" in memory management?

• The stack is used for storing local variables, while the heap is used for storing dynamically allocated objects.

• The stack is faster than the heap.

• The stack is managed automatically, while the heap requires manual memory management.

• All of the above

What is a "RESTful API"?

• An API that follows the principles of Representational State Transfer.

• An API that uses XML for data exchange.

• An API that is only accessible over HTTPS.

• An API that is used for real-time communication.