Unit 4: Computer Systems and Networks

Which protocol is responsible for breaking data into packets and reassembling them at the destination?

What is the purpose of an IP address?

Which of the following best describes redundancy in the context of the Internet?

What is the key difference between TCP and UDP?

What does HTTP stand for, and what is its purpose?

Which of the following is a benefit of open standards and protocols on the Internet?

What is the primary purpose of public key encryption?

Which of the following is an example of a cybersecurity threat?

What is a DDoS (Distributed Denial-of-Service) attack?

What is the difference between the Internet and the World Wide Web?

What is bandwidth?

Which of the following best explains why parallel computing can speed up certain tasks?

A sequential program takes 100 seconds to complete. If the program is divided so that 80 seconds of work can be done in parallel across 4 processors, what is the approximate total time?

What is a certificate authority in the context of Internet security?

Why is it important to keep software and operating systems up to date?

How many unique values can be represented using 8 bits?

What is the scalability of a system?

TCP (Transmission Control Protocol) is responsible for:

The internet is considered fault-tolerant because:

The difference between HTTP and HTTPS is that HTTPS:

A system is considered scalable if it:

In networking, redundancy improves:

Bandwidth refers to:

In parallel computing, the speedup obtained is limited by:

Cloud computing allows users to:

On the internet, packets from point A to point B:

Network latency is:

Tasks A (3 sec), B (5 sec), and C (2 sec) must run. A and B can run in parallel, but C depends on both. What is the minimum total time?

In public key (asymmetric) encryption:

The internet and the World Wide Web are:

Certificate authorities (CAs) in web security are responsible for:

A company has offices in three cities connected by the following network: City A connects to City B and City C. City B connects to City A and City C. City C connects to City A and City B. If the link between City A and City B fails, can City A still communicate with City B?

A website uses HTTPS instead of HTTP. A student claims this means all data transmitted between the user and the website is completely secure. Which of the following best evaluates this claim?

A company has three offices connected in a network. Office A connects to Office B, and Office B connects to Office C, but there is no direct connection between A and C. If the connection between B and C fails, which statement is true?

Which of the following is a primary reason that the Internet uses packet switching rather than dedicated circuits for data transmission?

A user visits a website using HTTPS. Which of the following is encrypted during the communication between the user's browser and the web server?