A data processing application has been refactored to use parallel computing. The execution time decreased from 100 seconds to 40 seconds when using 4 processors. What percentage of the original code was inherently sequential?

A company is expanding its infrastructure to support a global workforce. They need to ensure that their network can handle the increased data traffic without slowing down. Which metric is most important for them to consider?

A network administrator observes that actual file transfer speeds are consistently 20% lower than the theoretical bandwidth. Which factor most likely explains this discrepancy?

A network administrator is setting up a new network and needs to decide between using TCP and UDP for data transmission. If the application requires reliable data delivery but can tolerate some latency, which protocol should be used?

Which of the following is a vulnerability in the Internet's fault tolerance?

A university's research department is running complex simulations that require extensive computational resources. What computing approach would best suit their needs?

Which scenario best demonstrates the benefit of open Internet protocols?

A company is deploying a new application that must remain operational even in the event of server failures. To achieve this, they should focus on enhancing the application's:

Which of the following best exemplifies how the Internet functions as a computing system?

An IT department is implementing measures to protect their network from unauthorized access and data breaches. These measures are primarily aimed at preventing:

All of the following are true about the User Datagram Protocol (UDP) except:

A data processing algorithm has sequential preprocessing (4ms), parallel data analysis tasks (7ms, 12ms, 9ms), and sequential post-processing (3ms). Which modification would most effectively reduce the overall execution time?

An online retailer uses UDP for transmitting user actions to its servers. What is a potential drawback of using UDP in this scenario?

A company is planning to expand its online services to accommodate more users. To ensure a smooth expansion, they must focus on improving the system's:

A VoIP call experiences quality issues due to packet delivery problems. Which statement accurately describes why this occurs?

Which vulnerability in digital systems does fault tolerance help mitigate by allowing traffic to bypass overwhelmed servers or networks?

When a large file is sent across the Internet, why is it broken into packets rather than sent as a single unit?

A program has three tasks: Task A (sequential, 5 seconds), Task B (parallel, 8 seconds), and Task C (parallel, 6 seconds). What is the minimum execution time for this program?

A developer is comparing two algorithms for processing a large dataset. Algorithm A takes 20 seconds on a single processor, while Algorithm B takes 60 seconds but can be divided into 4 equal parallel tasks. Assuming perfect parallelization with no overhead, which statement is correct?

A developer is analyzing two algorithms for processing image data. Algorithm A processes each pixel sequentially, taking 0.01 microseconds per pixel. Algorithm B uses parallel processing. For a 1000×1000 pixel image, which statement is true about Algorithm A's execution time?