C952 Computer Architecture
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Free C952 Computer Architecture Questions
What is the bit width of an SIMD register when determining subword parallelism?
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32 bits
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128 bits
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256 bits
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64 bits
Explanation
Explanation:
SSE2 SIMD registers, also known as XMM registers, are 128 bits wide. Subword parallelism refers to dividing the SIMD register into smaller data elements (subwords), such as 8-bit, 16-bit, or 32-bit integers, and performing operations on all subwords simultaneously. The 128-bit width allows multiple subwords to be packed and processed in parallel, making the XMM register an effective tool for vectorized computation and improving data throughput in SIMD operations.
Correct Answer:
128 bits
Why Other Options Are Wrong:
32 bits is incorrect because 32 bits represents a single standard integer or float, not the width of an SSE2 SIMD register.
256 bits is incorrect because 256-bit SIMD registers are associated with AVX (Advanced Vector Extensions), not SSE2.
64 bits is incorrect because 64 bits is the width of a standard general-purpose register or an MMX register, not an SSE2 XMM register used for SIMD operations.
Which computer architecture idea is analogous to the assembly line?
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Dependability via redundancy
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Dependability via parallelism
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Performance via prediction
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Performance via pipelining
Explanation
Explanation:
Pipelining in computer architecture is analogous to an assembly line in manufacturing. In both cases, tasks are broken down into sequential stages, allowing multiple operations to be in progress simultaneously at different stages. This improves overall throughput without reducing the time required for each individual task. By overlapping instruction execution stages (fetch, decode, execute, memory access, write-back), pipelining increases processor performance in a way that mirrors how assembly lines increase production efficiency in factories.
Correct Answer:
Performance via pipelining
Why Other Options Are Wrong:
Dependability via redundancy is incorrect because redundancy focuses on fault tolerance and reliability, not the sequential, overlapping execution that characterizes an assembly line.
Dependability via parallelism is incorrect because parallelism refers to performing multiple independent tasks simultaneously, which is different from the staged, sequential overlapping of tasks in pipelining.
Performance via prediction is incorrect because prediction improves performance by guessing the outcome of branches, which is unrelated to the assembly line concept of breaking tasks into sequential stages.
How many pins does DDR4 have?
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213
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184
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240
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288
Explanation
Explanation:
DDR4 memory modules for desktops feature 288 pins. This pin count allows for higher memory density, improved data transfer rates, and better performance compared to DDR3 modules, which typically have 240 pins. The increased pin count also supports lower voltage operation and other enhancements that improve efficiency and reliability in modern computing systems.
Correct Answer:
288
Why Other Options Are Wrong:
213 is incorrect because this pin count does not correspond to any standard DDR4 module.
184 is incorrect because 184 pins are associated with older DDR2 SO-DIMM modules for laptops, not DDR4
240 is incorrect because 240 pins are used for DDR3 desktop DIMMs, not DDR4.
How does RAID 1 ensure data redundancy?
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Mirroring data on two disks.
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Striping data across multiple disks.
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Using parity information.
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Storing data on a single disk.
Explanation
Explanation:
RAID 1 ensures data redundancy by mirroring, which means that identical copies of data are stored on two or more disks. If one disk fails, the system can continue to operate using the mirrored copy without any data loss. This duplication provides a simple and effective method to protect against hardware failures, ensuring that critical data remains available even if a disk becomes inoperable. Unlike striping or parity-based RAID configurations, RAID 1 focuses purely on redundancy rather than performance or storage efficiency.
Correct Answer:
Mirroring data on two disks.
Why Other Options Are Wrong:
Striping data across multiple disks is incorrect because striping (used in RAID 0) distributes data across multiple disks for performance, not for redundancy. A failure in any disk causes data loss.
Using parity information is incorrect because parity is used in RAID 5 or RAID 6 to provide fault tolerance while maintaining some storage efficiency, not in RAID 1.
Storing data on a single disk is incorrect because storing data on a single disk does not provide redundancy; if the disk fails, all data is lost.
What is a primary benefit of using a Hybrid Drive (SSHD) compared to a traditional Hard Disk Drive (HDD)?
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It provides the same performance as a full Solid State Drive (SSD).
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It offers a larger storage capacity at a lower cost than a full SSD.
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It has a simpler technology that reduces the risk of failure
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It operates solely on SSD technology for faster data access
Explanation
Explanation:
A Hybrid Drive (SSHD) combines a traditional hard disk drive (HDD) with a small amount of solid-state drive (SSD) memory. This allows frequently accessed data to be stored in the SSD portion, improving read and write performance compared to a standard HDD. At the same time, it maintains the large storage capacity and lower cost of an HDD. The primary benefit of an SSHD is this balance between improved performance for common tasks and cost-effective high-capacity storage, without fully relying on expensive SSDs.
Correct Answer:
It offers a larger storage capacity at a lower cost than a full SSD.
Why Other Options Are Wrong:
It provides the same performance as a full Solid State Drive (SSD) is incorrect because an SSHD cannot match the performance of a full SSD; only part of the drive is solid-state, so overall speed improvements are limited.
It has a simpler technology that reduces the risk of failure is incorrect because SSHDs combine two types of storage, making them more complex than standard HDDs, not simpler.
It operates solely on SSD technology for faster data access is incorrect because SSHDs still rely on a mechanical HDD for the majority of storage; they do not operate entirely on SSD technology.
Which motherboard form factor is larger than ATX and is typically used in high-end systems with additional features and expansion slots?
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microATX
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ITX
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BTX
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EATX
Explanation
Explanation:
EATX (Extended ATX) is a motherboard form factor that is larger than the standard ATX size. It provides more space for additional features such as extra memory slots, multiple PCIe expansion slots, and enhanced power delivery systems, making it suitable for high-end workstations and gaming PCs. The increased size allows for better cooling options and additional components, which are often required in professional or enthusiast systems.
Correct Answer:
EATX
Why Other Options Are Wrong:
microATX is incorrect because microATX is smaller than standard ATX and is designed for compact systems, offering fewer expansion slots and features.
ITX is incorrect because ITX form factors (such as Mini-ITX) are much smaller than ATX, intended for compact or small form factor systems rather than high-end setups.
BTX is incorrect because BTX (Balanced Technology Extended) is a different motherboard design focused on thermal management, not an extended size for additional features; it is not widely used today.
Which of the following components is NOT part of the WAMP stack?
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Windows
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Apache
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MySQL
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PostgreSQL
Explanation
Explanation:
The WAMP stack is a software bundle used for web development that includes Windows (operating system), Apache (web server), MySQL (database), and PHP (programming language). PostgreSQL, although a popular relational database management system, is not included in the standard WAMP stack. WAMP specifically relies on MySQL as its database component for storing and managing data.
Correct Answer:
PostgreSQL
Why Other Options Are Wrong:
Windows is incorrect because it forms the “W” in WAMP, representing the operating system component of the stack.
Apache is incorrect because it is the web server in WAMP and is essential for serving web pages and handling HTTP requests.
MySQL is incorrect because it provides the database functionality in WAMP, allowing the stack to store, retrieve, and manage application data.
Which of the following best describes the primary use of PHP in web development?
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To create static HTML pages
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To manage client-side interactions
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To generate dynamic content on the server
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To enhance database performance
Explanation
Explanation:
PHP is a server-side scripting language primarily used to generate dynamic content for websites. It executes on the server and can create customized HTML, interact with databases, manage sessions, and respond to user input, allowing web pages to change content based on user interactions or other conditions. PHP is not used for static HTML generation or client-side interactions; instead, it dynamically constructs web pages before sending them to the browser.
Correct Answer:
To generate dynamic content on the server
Why Other Options Are Wrong:
To create static HTML pages is incorrect because static pages do not require server-side processing; they are simple HTML files that remain the same for every user.
To manage client-side interactions is incorrect because client-side interactions are handled by languages like JavaScript, not PHP.
To enhance database performance is incorrect because while PHP can interact with databases, its role is not to improve database performance; it is used to query and manipulate data and generate dynamic content.
Given four processors with different clock frequencies, which processor has the highest potential performance?
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Processor 2
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Processor 1
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Processor 3
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Processor 4
Explanation
Explanation:
The potential performance of a processor is largely determined by its clock frequency, as higher clock frequencies allow more cycles per second and, therefore, the potential to execute instructions faster. While other factors like architecture efficiency and instruction count matter, among processors with similar architectures, the one with the highest clock frequency generally has the highest potential performance because it can complete more cycles in a given time, allowing faster processing of instructions.
Correct Answer:
Processor 1
Why Other Options Are Wrong:
Processor 2 is incorrect if its clock frequency is lower than Processor 1; despite other features, the raw potential performance is limited by fewer cycles per second.
Processor 3 is incorrect because a lower clock frequency reduces the number of instructions that can be executed per unit time, lowering potential performance.
Processor 4 is incorrect if its clock frequency is lower than Processor 1; clock rate is a primary factor for potential performance, and lower frequency limits maximum throughput.
Which two components are necessary for implementing ALU operations?
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ALU and register file
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ALU and GPU
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Datapath and COD
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GPU and register file
Explanation
Explanation:
The Arithmetic Logic Unit (ALU) performs arithmetic and logic operations, but it requires data to operate on and a place to store results. The register file provides this storage for operands and results, making it essential for ALU operations. Together, the ALU and register file form the core computational elements within a processor, enabling efficient execution of instructions. Without the register file, the ALU would have no immediate access to operands or a place to store results, rendering it unable to function effectively.
Correct Answer:
ALU and register file
Why Other Options Are Wrong:
ALU and GPU is incorrect because a GPU is a specialized processor for graphics operations and is not required for general ALU operations in a CPU. The ALU operates independently of a GPU for standard arithmetic and logic tasks.
Datapath and COD is incorrect because COD is not a standard computer architecture component, and while the datapath is involved in executing operations, it cannot perform ALU functions without the ALU itself and the register file.
GPU and register file is incorrect because a GPU is not necessary for the ALU to perform basic processor operations. The ALU and register file are the essential components for implementing arithmetic and logic functions within the CPU.
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