Quiz 4 (Nov 26)

Question 1

What criterion determines which programs can access and interpret a file?

Answer 1

The File Type

Question 2

The _____ directory is the highest level directory of a tree-structured directory hierarchy.

Answer 2

Root

Question 3

The _____ path name of a file is a concatenation of file names from the current directory.

Answer 3

Relative

Question 4

Which of the following is a data structure containing attributes of a file?

Answer 4

File Control Block (FCB)

Question 5

What does a create file operation initialize?

Answer 5

A new File Control Block

Question 6

What is a major disadvantage of a contiguous block allocation scheme?

Answer 6

Fragmentation

Question 7

Which block allocation scheme does not allow direct access?

Answer 7

Clustered

Question 8

What file operation allows accessing a random position within a file?

Answer 8

Seek

Question 9

A request to get the next character from an I/O device could be directed to:

Answer 9

A Keyboard Driver

Question 10

A request to write a block of data to an I/O device could be directed to:

Answer 10

A Disk Driver

Question 11

Device drivers are implemented in:

Answer 11

Software

Question 12

A _________ is a device-specific program that implements I/O operations.

Answer 12

Device Driver

Question 13

Which term describes the memory register for holding data being transferred between the device and main memory?

Answer 13

Data Buffer

Question 14

Which technique repeatedly reads a 1-bit flag to determine if the device is busy or idle?

Answer 14

Polling

Question 15

Identify the technique to free up the CPU by allowing device controllers to independently transfer data between the device and main memory.

Answer 15

Direct Memory Access (DMA)

Question 16

A _____ is a register in the main memory used to hold data generated by a producer process.

Answer 16

Buffer

Question 17

The Internet is a connection of _____.

Answer 17

Billions of computers around the world

Question 18

Computers communicate by sending a piece of information known as a _____, which travels from the sender’s computer through various intermediate computers until reaching a destination computer.

Answer 18

Packet

Question 19

What is the Internet Protocol?

Answer 19

Particular rules for computers to communicate via a computer network

Question 20

What does an Internet router do?

Answer 20

Receives packets from computers/routers, sending those packets to other computers/routers.

Question 21

Which protocol defines how data to be sent over the Internet is first broken down into packets?

Answer 21

TCP

Question 22

Which most closely represents the form of an IP address?

Answer 22

198.51.100.7

Question 23

Compared to IPv4, the main advantage of IPv6 is _____.

Answer 23

longer addresses, thus allowing more devices on the Internet

Question 24

When did the world-wide web begin?

Answer 24

1990’s

Question 25

What is the main file type used by web browsers?

Answer 25

HTML files

Question 26

_____ is the standard protocol for transferring web pages over the Internet.

Answer 26

HTTP