Computer Hardware 3.6-.8

You have a computer that has four DDR2 memory slots. Currently, there are two 512 MB memory modules installed. You check the motherboard documentation and find that the system has a 4 GB memory limitation. You want to add more memory to this system. By adding new memory modules, and without replacing the existing memory modules, what is the maximum total amount of usable RAM you can have in this system?

3 GB

What is the approximate bus speed of DDR2 memory rated at PC2-5300?

333 MHz

Which of the following BEST describes the theoretical capacity of a DDR4 standard system memory module?

512 GB

You want to build a new system that supports 6 GB of memory. Which of the following will be the MOST important consideration when building the computer?

64-bit processor

You have a computer with a Pentium 4 CPU and two PC-2400 DDR modules. The motherboard has room for two additional memory modules, and you'd like to install two PC-4000 modules. Which of the following statements is true?

All memory will operate at 300 MHz.

After working without problems for a couple of years, your computer has begun to lock up. You suspect that it is a thermal issue, but you can't find any component that is not functioning correctly. You have not replaced the CPU or installed any new devices. The CPU cooling fan and the power supply fan are working properly. The lock-ups are happening with increasing frequency. Which of the following is the MOST common condition that might explain these symptoms?

An accumulation of dust has gradually built up

To improve system performance, you have configured a motherboard to run with a higher multiplier than what the CPU is specified to use. Since doing this, the system has become unstable and crashes frequently. To restore system stability, which of the following should be completed?

Back off on the overclocking settings until the system runs in a stable manner

Which of the following are true regarding a dual-channel memory bandwidth configuration? (Select TWO).

Bandwidth is increased by 5-15%. The memory controller must support dual-channels.

What type of RAM might slow system performance because it holds memory addresses or data to improve stability on systems with more than 1 GB of RAM before it is transferred to the memory controller?

Buffered

A new computer is being purchased for Peter, the new administrative assistant. Peter primarily uses word processing, spreadsheets, presentation software, and a web browser to complete his job assignments. Which of the following BEST describes the reason to choose unbuffered instead of buffered memory for this new computer?

Buffered memory is more expensive and slower than unbuffered memory.

You work as the IT administrator for a small corporate network. Sam, an employee in the support department, wants to run a virtual machine on his computer to troubleshoot customer issues from, and he needs a very stable computer from which to work. You need to decide whether to install buffered or non-buffered RAM in his computer. Which of the following BEST describes the reason to choose buffered instead of unbuffered memory for this new computer?

Buffered memory reduces the load on the memory controller and allows the system to be more stable.

With a memory module read request, there is a delay between the time of the data request and the time the data is available for output from the memory module. What is this delay called?

CAS latency

You have just finished upgrading the CPU in your desktop system. After running for about 15 minutes, the system spontaneously shuts down. Which steps should you take to begin troubleshooting the issue? (Select TWO).

Check the thermal shutdown threshold in the BIOS. Check the CPU fan power.

You want to upgrade all memory in your system with the fastest memory available. Which of the following should you choose?

Choose the type of memory that is supported by your motherboard

Your motherboard has sockets for 184-pin DIMM RAM. Which type of RAM should you install?

DDR

Assuming the same operating frequency, what are the advantages of DDR3 over DDR2? (Select TWO.)

DDR3 doubles the data transfer rate of DDR2 DDR3 uses less power than DDR2.

Which of the following memory ratings identifies the fastest memory?

DDR3-1600

Which memory rating identifies the fastest memory?

DDR3-2000 (s)

Assuming the same operating frequency, what advantages does DDR4 have over DDR3? (Select TWO.)

DDR4 uses less power than DDR3 DDR4 doubles the data transfer rate of DDR3

Which of the following are terms used to identify memory modules?

DIMM

Since it has no moving parts, a CPU will usually work properly for several years. Which of the following is a common factor that MIGHT cause a CPU to fail prematurely?

Electrostatic discharge (ESD)

You are in a carpeted office lighted by fluorescent bulbs. You are preparing to add memory modules to a user's computer. The user has already unpacked the memory modules and stacked them on top of an old, unused CRT monitor. In this environment, what is the greatest threat to these memory modules?

Electrostatic discharge (ESD)

You have just received an order of various system components from an order you placed several weeks ago. One of the components is labeled as SODIMM memory. For which of the following was this memory MOST likely purchased?

Laptop computers

You have just upgraded the CPU on your computer. You consulted the motherboard documentation to make sure the CPU is compatible with the motherboard. However, when you turned the system on, it locks up shortly after startup. While troubleshooting this issue, which of the following are the BEST steps to try first? (Select TWO).

Make sure the CPU is seated properly, oriented properly, and locked into the socket Look for something that could be causing the new CPU to overheat

A customer needs to use several applications. Currently, the computer cannot keep all the necessary applications open at the same time. Which of the following components should you consider upgrading?

Memory

Which of the following is the most common method for removing RAM from a motherboard?

Move the tabs holding the RAM out of the way; pull straight up to remove the RAM.

Paul has just joined your company, and you are in the process of purchasing a laptop computer for his use. Paul will work as a sales rep in the sales department. You have heard that some types of RAM are better than others. Which of the following types of RAM would BEST meet the needs of Paul's new computer?

Non-ECC memory, as it is less expensive, and parity is not required.

Zoey has brought her computer in for servicing. When she dropped off her computer, she mentioned that her computer will sometimes spontaneously reboot and freezes occasionally. Which of the following is the MOST likely cause of this problem?

Overheated CPU

Steve, a computer technician, received a helpdesk ticket for a computer that will not start. When Steve powered the computer on, there was one long and two short beeps. Which of the following programs is reporting this error condition?

POST

You have an existing system that has a single DDR3 memory module installed. You would like to add more memory to the three remaining empty memory slots. Which of the following steps should MOST likely be taken to make sure you get the right memory for the system? (Select TWO).

Purchase additional modules that are the same as what is currently installed. Check the motherboard documentation to find which modules are supported.

Your system crashes at various times: sometimes on startup, sometimes when running a software application, sometime when a certain group of applications is running. You suspect a malfunctioning CPU, but none of the common issues seem to be present. You have not configured overclocking. There is no overheating. The CPU is seated correctly and locked into its socket. What can you do to definitively determine if the CPU is causing the system crashes?

Replace the suspect CPU with a known good CPU of the same make and model.

Which of the following statements is true regarding single- and double-sided memory?

Single-sided memory uses half the number of memory modules as double-sided memory of the same capacity

You work at a computer repair store. You just upgraded the processor (CPU) in a customer's Windows-based computer. The customer purchased the latest AMD Phenom II processor, and you installed it in the computer. When you power the computer on, you only see a blank screen. Which of the following is MOST likely causing the computer displaying a blank screen? (Select TWO).

The CPU is not supported by the BIOS. The CPU is bad.

Lately, your computer is spontaneously shutting down after only a few minutes of use. What is the likely cause? (Select TWO).

The heat sink and fan were not installed correctly The power connector for the fan was not connected to the motherboard.

A laptop that you previously purchased was shipped with SODIMM memory to accommodate the laptop's form factor. You would now like to upgrade the memory. Which of the following is an upgrade to the SODIMM standard?

UniDIMM

A few of your employees have complained that their computers sometimes shut down spontaneously. You have noticed that these employees all work in a part of the building where the air condition does not adequately cool the room. These employees also use CPU-intensive programs. You suspect that the spontaneous shutdowns are caused by overheating. Which of the following is the SIMPLEST way to monitor the temperature of the computer's CPU?

Viewing the temperature from within the BIOS.