COMPTIA Server + SK0-004: Chapter 1 - Server Fundamentals, Exams of Computer Science

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COMPTIA SERVER + SK0-

CHAP 1

Which term refers to the size, appearance, or dimensions of a server? A. Form factor B. Footprint C. Physical reference D. U measure - Answer A. When we use the term form factor when discussing any computing device or component, we are talking about its size, appearance, or dimensions. It is typically used to differentiate one physical implementation of the same device or component from another. In the case of servers, we are talking about the size and dimensions of the enclosure in which the server exists. Which of the following is used to make maintenance easier with a rack server? A. KVM B. Rail kits C. Baffles D. Rack slot - Answer B. Rail kits, when implemented, allow you to slide the server out of the rack for maintenance. How large is each U in a rack? A. 19 inches B. 4.445 inches C. 1.75 inches D. It depends on the rack. - Answer C. Each U is 1.75 inches (4.445 cm) high.

What technology consists of a server chassis housing multiple thin, modular circuit boards, each of which acts as a server? A. Rack servers B. Towers C. KVM D. Blade technology - Answer D. This technology consists of a server chassis housing multiple thin, modular circuit boards, known as server blades. Each blade (or card) contains processors, memory, integrated network controllers, and other input/output (I/O) ports. What type of CPU cache holds data that is waiting to enter the CPU? A. L B. L C. L D. L4 - Answer A. The Level 1 cache, also known as the L1 or front-side cache, holds data that is waiting to enter the CPU. On modern systems, the L1 cache is built into the CPU. What term describes the time the CPU was executing in kernel mode? A. User time B. Steal time C. System time D. Idle time - Answer C. When monitoring CPU performance, the following are common metrics and their meanings: ■■ User time—the time the CPU was busy executing code in user space ■■ System time—the time the CPU was busy executing code in kernel space ■■ Idle time—the time the CPU was not busy; measures unused CPU capacity

■■ Steal time (virtualized hardware) —the time the operating system wanted to execute but was not allowed to by the hypervisor, because it was not the CPU's turn for a time What term describes the relationship between the internal speed of the CPU and the speed of the system bus? A. CPU time B. Multiplier C. Differential D. Coefficient - Answer B. The internal speed may be the same as the motherboard's speed (the external or bus speed), but it's more likely to be a multiple of it. For example, a CPU may have an internal speed of 1.3 GHz but an external speed of 133 MHz. That means for every tick of the system crystal's clock, the CPU has 10 internal ticks of its own clock. What are revisions in CPUs called? A. Service packs B. Hot fixes C. Base layers D. Stepping levels - Answer D. When CPUs undergo revisions, the revisions are called stepping levels. When a manufacturer invests money to do a stepping, that means they have found bugs in the logic or have made improvements to the design that allow for faster processing. Which CPU architecture was designed for a tablet? A. ARM B. x C. x D. LGA - Answer A. ARM requires fewer resources than either x86 or the x64. In that regard they are suitable for tablets, smartphones, and other smaller devices.

DDR3 memory is _______ as fast as DDR2. A. Three times B. Twice C. Half D. One third - Answer B. The primary benefit of DDR3 over DDR2 is that it transfers data at twice the‐ rate of DDR2 (eight times the speed of its internal memory arrays), enabling higher bandwidth or peak data rates. True/False: DDR doubles the rate by accessing the memory module twice per clock cycle. - Answer True What statement is true with regard to dual channel memory?‐ A. Installing different size modules in the same bank will result in the modules operating in single channel mode.‐ B. Installing different size modules in the same bank will result in the modules operating in dual channel mode.‐ C. Installing equal size modules in the same bank will result in the modules operating in single channel mode.‐ D. Installing different size modules in the same bank will increase the performance of the bank. - Answer A. When installing the memory, install the same size modules in the same bank. If you do not, the modules will not operate in dual-channel mode. This will impair the performance of the bank. Which if the following is the time to access a memory address column if the correct row is already open? A. CAS Latency B. Row Address to Column Address Delay C. Row Precharge Time D. Row Active Time - Answer A. Memory timing measures the performance of RAM and is composed of four components:

■■ CAS Latency—the time to access an address column if the correct row is already open ■■ Row Address to Column Address Delay—the time to read the first bit of memory without an active row ■■ Row Precharge Time—the time to access an address column if the wrong row is open ■■ Row Active Time—the time needed to internally refresh a row Which of the following can be mixed when installing memory? Choose two. A. Different speeds B. Different types C. Different form factors D. Different manufacturers - Answer A, D. You can mix speeds and manufacturers but not form factors or types. Which of the following is a double wide version of the 32 bit PCI local bus?‐ ‐ A. PCI B. PCI X‐ C. PCIe D. PCI/2 - Answer B. PCI-eXtended (PCI-X) is a double-wide version of the 32-bit PCI local bus. It runs at up to four times the clock speed, achieving higher bandwidth, but otherwise uses the same protocol and a similar electrical implementation. Which type of NIC detects the type of device on the other end and changes the use of the wire pairs accordingly? A. Auto MDIX‐ B. Full duplex‐ C. Converged

D. HBA - Answer A. An auto-MDIX card is capable of detecting what type of device is on the other end and changing the use of the wire pairs accordingly. For example, normally a PC connected to another PC requires a crossover cable, but if both ends can perform this sensing, that is not required. What type of NIC acts as both a host bus adapter (HBA) for the SAN and also as the network card for the server? A. Auto MDIX‐ B. Full duplex‐ C. Converged D. HBA - Answer D. Many servers attach to storage networks and may run converged network adapters (CNA), which acts both as a host bus adapter (HBA) for the SAN and as the network card for the server. What are the two implementations of hybrid drives? A. Dual drive‐ B. Single drive‐ C. Solid state‐ D. Dual state - Answer A, C. There are two main approaches to this: dual-drive hybrid and solid-state‐ hybrid. What is the height of a 2U system? A. 1.75″ B. 3.5″ C. 5.25″ D. 7″ - Answer B. 1U and 2U systems, which are 1.75″ and 3.5″, respectively. Which statement is false with regard to UEFI?

A. It protects the preboot process. B. It has a slower startup time than BIOS. C. It supports 64 bit firmware device drivers.‐ D. It supports drives larger than 2.2 terabytes (TB). - Answer B. UEFI provides faster startup and resuming from hibernation times.