Revision Quiz 2

Customers log in to an online application using a username and password to submit a record of their monthly meter reading to a utility company. Which file organization method is used for the file of all the records submitted by customers each month?

• Serial

• Random

• Sequential

• Index-sequential

Customers log in to an online application using a username and password to submit a record of their monthly meter reading to a utility company. Usernames and encrypted passwords are used to authenticate customers when logging into their accounts. Which of the following is the MOST efficient file access method?

• Direct

• Serial

• Two step verification

• Sequential

In order to use a program stored on a flash drive, the program must be transferred into

• ROM

• RAM

• PROM

• EPROM

Which of the following is NOT a hardware component of a computer system?

• Data file

• Main memory

• Peripheral device

• Central processing unit

A system that analyses data and that uses rules and previous information to deliver possible decisions is called

• a robot machine

• an expert system

• a biometric machine

• a mainframe computer

Which of the following statements about biometric systems is INCORRECT?

• The level of accuracy is very high.

• The personal data captured is very intrusive.

• A small amount of memory is used to store data.

• The user has to be present to use the system.

Which of the following examples describe a denial-of-service (DOS) attack?

I. Sudden excessive increase in amount of junk emails

II. Inability to reach regular websites because of too many requests

III. Decrease in network performance because of a flood of transactions

• I and II only

• I and III only

• II and III only

• I, II and III

Which of the following protocols is used to ensure that all web pages and servers communicate with each other?

• IP

• FTP

• VoIP

• HTTP

Which of the following is true of accessing files sequentially?

• Occurs in any order

• Starts with the first record

• Starts with the largest data field

• Starts with the smallest data field

Which of the following is a hardware user interface?

• GUI

• Icon

• Sensor

• Touchscreen