Chapter 8

To regulate the internal timing of a computer system, the motherboard uses
A) a system clock.
B) software simulation.
C) RAM.
D)a register
A) a system clock.
Which statement about pipelining is TRUE?
A) Pipelining does not boost CPU performance.
B) Pipeline design is only used in computers in conjunction with parallel processing.
C) Pipelining allows a less complicated hardware design.
D) Pipelining allows the computer to process multiple instructions simultaneously. increasing CPU performance
D)Pipelining allows the computer to process multiple instructions simultaneously.
From fastest to slowest, which is the fastest sequence of accessing memory? p335
A) registers, RAM, Level 1 cache, Level 2 cache
B) registers, Level 1 cache, Level 2 cache, RAM
C) Level 1 cache, Level 2 cache, RAM, registers
D) Level 2 cache, Level 1 cache, registers, RAM
B) registers, Level 1 cache, Level 2 cache, RAM
VoIP is a phone service that
A) requires a fiber-optic connection.
B) works over an Internet connection.- Skype
C) is only available for calls within the United States.
D)has extremely high quality but is very expensive.
B) works over an Internet connection.-
An analog signal is different from a digital signal because
A) it is continuous. -sound & light waves
B) it has only specific discrete values.-Digital signal
C) it is easier to duplicate.
D) it is easier to transmit.
A) it is continuous.
The term ________refers to the use of a single unifying device that handles media, Internet, entertainment, and telephone needs.
A) multimedia message service
B) telephony -the use of equipment to provide voice communications over a distanceFs, analog to digital
C) mobile switching center
D) digital convergence
D) digital convergence
The operating system of a cell phone is stored in _______.
A) RAM
B) the CPU
C) ROM -OS is stored here
D) an SD card
C) ROM
A(n) _____ chip converts sound waves from a voice into digital signal.
A) analog-to-digital converter -strength of analog signal at each point is recorded as a simple number
B) digital convergence
C) digital signal processor
D) telephony
A) analog-to-digital converter
All of the following are advantages of VoIP EXCEPT ________.
A) low or free cost
B) portability
C) excellent reliability during Internet or power outages
D) the ability to make calls on a computer from any WiFi hotspot
C) excellent reliability during Internet or power outages
VoIP uses ________ technology similar to email to transmit voice over the internet.
A) digital
B) analog
C) binary
D) IP
D) IP
Each cell in a cellular network is a geographic area centered on a(n) ______ station, which is a large communications tower.
base transceiver
A specialized chip included in the cell phone that handles digital compression data is called the
digital signal processor
Every smartphone contains a GPS chip
True
SMS technology sends both text and pictures
False
When converting analog waves to a series of numerical values, the higher the sampling rate, the more accurately the original wave can be re-created
True
Every new cell/smartphone has to include a GPS chip.
True
I. resolution
II. Bluetooth
III. analog
IV. SMS
V. data plan

A. determines the cost and amount of data transfer for mobile devices
B. number of data points used to capture an image
C. uses radio wave to transmit data
D. text messaging
E. continuous sound or light waves

B, C, E, D, A
I. digital signal processor
II. mobile switching center
III. telephony
IV. analog-to-digital converter
V. codec

A. compresses cell phone data for easy transmission
B. the use of equipment to provide voice communications over a distance
C. changes your voice’s sound waves into digital signals
D. central location to which a base station transfers a cell phone service request
E. rule using hardware or software that compress audio and video information

A, D, B, C, E
Define and discuss the different levels of cache memory in detail
Level 1 cache is a block of 64KB memory built onto the CPU chip to store data or commands that have just been used.
Level 2 cache is 1MB and it may be located on the CPU or on a separate chip or coprocessor.
Level 3 cache holds about 2-12 MB of data it is typically slower but still faster than RAM
SoC chip
SOC technology will help satisfy the ever-increasing demands for high processing performance while reducing mass and power consumption. The design methodology has changed from being gate-level oriented to integration of complex building blocks (IP-cores). The future of mobile phones will be even smaller or thinner than ever.