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A program developed for a Web store represents customer acc appear to be mathematically imprecise. Which of the following A The account balances are represented using a fixed B The account balances are represented using a fixed The account balances are represented using an unli The account balances are represented using an unlim

A program developed for a Web store represents customer acc appear to be mathematically imprecise. Which of the following A The account balances are represented using a fixed B The account balances are represented using a fixed The account balances are represented using an unli The account balances are represented using an unlim

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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A program developed for a Web store represents customer account balances using a format that approximates real numbers. While testing the program, a software developer discovers that some values appear to be mathematically imprecise. Which of the following is the most likely cause of the imprecision? A The account balances are represented using a fixed number of bits, resulting in overflow errors. B The account balances are represented using a fixed number of bits, resulting in round-off errors. The account balances are represented using an unlimited number of bits, resulting in overflow errors. D The account balances are represented using an unlimited number bits, resulting in round-off errors.
Transcribed Image Text:A program developed for a Web store represents customer account balances using a format that approximates real numbers. While testing the program, a software developer discovers that some values appear to be mathematically imprecise. Which of the following is the most likely cause of the imprecision? A The account balances are represented using a fixed number of bits, resulting in overflow errors. B The account balances are represented using a fixed number of bits, resulting in round-off errors. The account balances are represented using an unlimited number of bits, resulting in overflow errors. D The account balances are represented using an unlimited number bits, resulting in round-off errors.
Which of the following best exemplifies the use of keylogging to gain unauthorized access to a computer system? A user unintentionally installs a program on their computer that records all user input and forwards it to another computer. A few weeks later, someone else is able to access the user's A computer using the recorded data. B A user has a very common password for an online banking account. Someone else guesses the password after a few attempts and gains access to the user's account. A user logs into an unsecure Web site. Someone else is able to view unencrypted log-in information as it is transmitted over the Internet. The user has the same username and password for multiple accounts, so the user's log-in information for multiple systems may be compromised. A user receives an e-mail that claims to be from the user's bank. The e-mail instructs the user to click on a link to a Web site and enter a username and password to verify an account. Shortly D after following the steps, the user discovers that the Web site is fraudulent and that the user's username and password were stolen.
Transcribed Image Text:Which of the following best exemplifies the use of keylogging to gain unauthorized access to a computer system? A user unintentionally installs a program on their computer that records all user input and forwards it to another computer. A few weeks later, someone else is able to access the user's A computer using the recorded data. B A user has a very common password for an online banking account. Someone else guesses the password after a few attempts and gains access to the user's account. A user logs into an unsecure Web site. Someone else is able to view unencrypted log-in information as it is transmitted over the Internet. The user has the same username and password for multiple accounts, so the user's log-in information for multiple systems may be compromised. A user receives an e-mail that claims to be from the user's bank. The e-mail instructs the user to click on a link to a Web site and enter a username and password to verify an account. Shortly D after following the steps, the user discovers that the Web site is fraudulent and that the user's username and password were stolen.
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