A+ Chapter 5

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1. What function does the external data bus have in the PC?

The external data bus determines the clock speed for the CPU.

The CPU uses the external data bus to address RAM.

The external data bus provides a channel for the flow of data and commands between the CPU and RAM.

The CPU uses the external data bus to access registers.

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2. What first name or nickname would you like us to use?

You may optionally provide this to label your report, leaderboard, or certificate.

2. The Intel Core Duo has which of the following advantages over the Pentium M?

Level 1 cache

64-bit data bus

Quad pipelining

Dual processors

3. What do registers provide for the CPU?

Registers determine the clock speed.

The CPU uses registers for temporary storage of internal commands and data.

Registers enable the CPU to address RAM.

Registers enable the CPU to control the address bus.

4. When a tech adds a new Athlon 64 X2 processor to a motherboard, which of the following should the tech check? (Choose the best answer.)

Clock speed of the CPU, clock multiplier for the CPU.

Clock speed of the CPU, clock multiplier of the CPU, voltage settings on the motherboard.

Clock speed of the CPU, clock multiplier for the CPU, voltage settings on the motherboard, system clock speed.

Voltage settings on the motherboard, system clock speed.

5. A donor gives five socket 939 Athlon X2 processors to the nonprofit corporation for which Jane works as a technician. Jane has serveral systems with Socket 939 motherboards and Athlon 64 CPUs installed. Her boss wants her to upgrade five systems with the new processors, but to keep the upgrade costs low, if possible, by using the existing motherboards. Primary objective - Upgrade the systems with faster CPUs. Optional objective - Use existing motherboards. Proposed solution - Remove the Athlon 64 CPUs on five systems and replace them with the new Athlon 64 X2 CPUs. Update the motherboards, following the motherboard manufacturer's guidelines. The proposed solution:

Meets only the primary objective

Meets only the optional objective

Meets the primary and optional objectives

Meets neither objective

6. What is the size of the data bus and the L1 cache on a Core 2 Duo CPU?

32-bit data bus, 32-KB L1 cache

64-bit data bus, two 32-KB L1 caches

64-bit data bus, two 64-KB L1 caches

128-bit data bus, two 128-KB L1 caches

7. The Intel Core Duo processor has two 32-KB Level 1 caches, whereas the Athlon 64 X2 has one 128-KB Level 1 cache. What do caches provide for the processors?

The enable the CPU to continue working during pipeline stalls.

They enable the CPU to continue working during hard drive refreshes.

They enable the CPU to access RAM.

They enable the CPU to access the chipset memory controller.

8. What distinguishes the Athlon 64 from the original Athlon? (Select two.)

Athlon 64 uses an external memory controller.

Athlon 64 uses an internal memory controller.

Athlon 64 runs on a traditional frontside bus.

Athlon 64 runs on a HypterTransport.

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9. Jane, the hardware technician for a nonprofit corporation, has 10 systems that she needs to upgrade with new microprocessors. Each system currently has a Socket 939 motherboard with an Athlon 64 3200+ CPU installed. To keep the upgrade costs low, her boss has told her to use the existing motherboards if possible. Primary objective - Upgrade the systems with faster CPUs. Optional objectives - Use existing motherboards and avoid adding any hardware aside from the CPU, fan, and heat-sink assembly. Proposed solution - Jane places an order for PPGA Core 2 Duo processors and 10 PPGA to Socket 939 converters. The proposed solution:

Meets only the primary objective

Meets the primary objective and one of the optional objectives.

Meets the primary objective and both of the optional objectives.

Meets none of the objectives.

10. What is the function of the address bus in the PC?

The address bus enables the CPU to communicate with the memory controller chip.

The address bus enables the memory controller chip to communicate with the RAM.

The address bus provides a channel for the flow of data and commands between the CPU and RAM.

The address bus enables the CPU to access registers.

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