CYBR 3123 Quiz 2, CYBR 3123 Quiz 1

The binary string 01000110001000 is a floating-point number expressed using the 14-bit simple model given in your text. (There are no implied bits.) What is its decimal equivalent?

2.125

67 (base 10) = ____________ (base 3)

2111

557 (base 10) = ____________ (base 16)

22D

424 (base 8) = ____________ (base 10)

276

There are ____________ gigabytes in a terabyte.

2^10

There are ____________ kilobytes in an exabyte.

2^50

The first completely electronic computer was the:

Atanasoff-Berry Computer.

________ is the hexadecimal symbol for 11.

B

________ are typically used by companies for specific applications such as data processing and financial transactions.

Mainframe computers

In 1965 one of the founders of Intel predicted, "The density of transistors in an integrated circuit will double every year." This is now known as:

Moore's Law.

Which of the following is a computer that used second-generation (transistor) technology?

PDP-1

__________ allow movement of data to and from devices external to the computer.

Ports

If the most significant bit of a signed binary number is 1, that number is:

negative.

A byte stores:

one character.

We study computer ___________ to become familiar with how circuits and signals collaborate to create working computer systems.

organization

Many desktop computers utilize the ___________ bus standard in which the system augments its main bus with dedicated I/O buses using expansion slots.

peripheral component interconnect

A ________ consists of an arithmetic logic unit and a control unit.

processor

The difference in expressive power between the physical components of a computer and a high-level language such as C++ is called a:

semantic gap.

The level of the computer hierarchy where an operating system functions is the:

system software level.

In 1948 John Bardeen, Walter Brattain, and William Shockley invented the:

transistor.

Assuming we are using the Hamming algorithm presented in your text and even parity to design an error-correcting code, find the code word to represent the 8-bit information word 01001000.

010011001000

Convert 0.3828125 to binary with 8 bits to the right of the binary point.

0.01100010

The binary addition of 1 + 1 + 1 + 1 = __________.

0100 (base 2)

Convert 0B2C (base 16) to binary

1011 0010 1100

355 (base 10) = ____________ (base 7)

1015

138 (base 10) = ____________ (base 5)

1023

379 (base 10) = ____________ (base 7)

1051

1101101 (base 2) = ____________ (base 10)

109

Convert -52 (base 10) to binary 8-bit one's complement.

11001011

122 (base 10) = ____________ (base 2)

1111010

How is -9 (base 10) represented in 8-bit two's complement notation?

11110111

How is -1 (base 10) represented in 8-bit two's complement notation?

11111111

The first supercomputer, the CDC 6600, had a memory size of:

128 kilowords.

1031 (base 5) = ____________ (base 10)

141

210 (base 10) = ____________ (base 8)

322

247 (base 10) = ____________ (base 8)

367

01D7 (base 16) = ____________ (base 10)

471

664 (base 9) = ____________ (base 10)

544

601 (base 10) = ____________ (base 9)

737

671 (base 10) = ____________ (base 9)

825

10022 (base 3) = ____________ (base 10)

89

10122 (base 3) = ____________ (base 10)

98

The mechanical computer that included mechanisms that provided memory and an arithmetic processing unit was the:

Difference Engine.

The first general-purpose programmable electronic computer was the:

ENIAC.

A value represented using 16 bits will always be more accurate than a value represented using 8 bits.

False

In order to provide greater range for a floating-point number, we make the significand larger.

False

Signed-magnitude and two's complement both have two representations for zero.

False

The general idea of Booth's algorithm is to increase the speed of addition when there are consecutive zeroes or ones in the multiplier.

False

The range of decimal values that can be expressed in 7 bits using binary two's complement is -32 to 31.

False

Which of the following is a computer that used fourth-generation (VLSI) technology?

IBM PC

The organization that sets standards for computer components, signaling protocols, and data representation is the:

IEEE

509 (base 10) = ____________ (base 16)

IFD

The organization that sets standards for photographic film and the pitch of screw threads, in addition to matters concerning computers, is the

ISO.

Cloud storage is a limited form of:

Infrastructure as a Service (IaaS)

Which of the following is the largest unit of storage?

TB

A biased floating-point exponent uses some manner of excess-M representation.

True

ASCII is a 7-bit code, while Unicode is a 16-bit code.

True

CRCs use systematic error detection.

True

Color depth reflects the number of colors that can be displayed on an LCD screen atone time.

True

Excess-M notation uses unsigned integers to express negative integers.

True

Herman Hollerith invented punched card-tabulating machines.

True

Only a limited range of real numbers can be expressed using the IEEE 754 standard.

True

Overflow is indicated when the carry in to the high-order bit is not equal to the carry out.

True

The CDC 6600 supercomputer was among the first computers to employ transistors.

True

The largest positive unsigned decimal number that can be expressed in 6 bits is 63.

True

Computer ______________ concern(s) itself with instruction sets and formats, operation codes, data types, the number and types of registers, addressing modes, main memory access methods, and various I/O mechanisms.

architecture

The ENIAC was originally built in order to speed up calculations for:

ballistics tables.

The approximate cost of building a chip fabrication plant today is:

between $1 billion and $15 billion.

Deep Blue beat a human chess Grandmaster using ______ methods.

brute force

Watson defeated human Jeopardy! champions using ______ methods.

cognitive

The computer component that makes sure that instructions are decoded and executed properly is the:

control unit.

The von Neumann bottleneck:

describes the single processor-memory path.

Platform as a Service (PaaS) replaces the _________ of the computer hierarchy with an Internet-based platform.

digital logic level through high-level language levels

Infrastructure as a Service (IaaS) replaces the _________ of the computer hierarchy with an Internet-based infrastructure.

digital logic level through machine levels

Software as a Service (SaaS) replaces the _________ of the computer hierarchy with an Internet-based application.

digital logic level through user levels

The level of the computer hierarchy that is composed of gates and wires is the:

digital logic level.

Clock speeds in today's microprocessors are measured in:

gigahertz.

The ________ is a processor designed to perform complex calculations required for image rendering.

graphics processing unit

The ________ is the agreed-upon interface between all the software that runs on the machine and the hardware that executes it. It allows you to talk to the machine.

instruction set architecture