COMPUTER SCIENCE:OVERVIEW-TEXT
12th Edition
ISBN: 2810015047178
Author: BROOKSHEAR
Publisher: PEARSON
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Expert Solution & Answer
Chapter 0, Problem 4SI
Explanation of Solution
“No”, the company should not be allowed to collect information about child’s buying patterns or about the child without prior permission of the parents. The company should ensure secure
Interactive Television:
Interactive television allows everyone in the family to get aware of all sorts of topic ranging from sports, news to entertainment or distance learning sitting in their own living room, at their own pace and in private. Children can learn to read, get information about various study topics and can find the relevant videos and animations at a click.
Impact of Interactive Television on the privacy:
Interactive television could lead to a loss of privacy.
- In home shopping, the company records credit card details to make transactions which include information about family and the buying habits.
- With this information, the company gets to know income, your preferences and can start sending you advertisements through emails and pamphlets regarding products which you may or may not need.
- Many news channels or entertainment channels may be interested in information about television viewing hours, when television is switched off and what are the peak hours of watching television.
- Hackers can get access to family as well as viewing habits and other confidential details.
- Emails, date of birth, place of living and other private details about the person can be intercepted by the hackers...
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Students have asked these similar questions
3.) File Encryption and DecryptionWrite a program that uses a dictionary to assign “codes” to each letter of the alphabet. For example:
codes = { ‘A’ : ‘%’, ‘a’ : ‘9’, ‘B’ : ‘@’, ‘b’ : ‘#’, etc . . .}Using this example, the letter A would be assigned the symbol %, the letter a would be assigned the number 9, the letter B would be assigned the symbol @, and so forth.
The program should open a specified text file, read its contents, then use the dictionary to write an encrypted version of the file’s contents to a second file. Each character in the second file should contain the code for the corresponding character in the first file.
Write a second program that opens an encrypted file and displays its decrypted contents on the screen.
Returns an US standard formatted phone number, in the format of
(xxx) xxx-xxxx
the AreaCode, Prefix and number being each part in order.
Testing Hint: We be exact on the format of the number when
testing this method. Make sure you think about how to convert
33 to 033 or numbers like that when setting your string format. Reminder
the %02d - requires the length to be 2, with 0 padding at the front if a single
digit number is passed in.
The next problem concerns the following C code:
/copy input string x to buf */
void foo (char *x) {
char buf [8];
strcpy((char *) buf, x);
}
void callfoo() {
}
foo("ZYXWVUTSRQPONMLKJIHGFEDCBA");
Here is the corresponding machine code on a Linux/x86 machine:
0000000000400530 :
400530:
48 83 ec 18
sub
$0x18,%rsp
400534:
48 89 fe
mov
%rdi, %rsi
400537:
48 89 e7
mov
%rsp,%rdi
40053a:
e8 d1 fe ff ff
40053f:
48 83 c4 18
add
callq 400410
$0x18,%rsp
400543:
c3
retq
0000000000400544 :
400544:
48 83 ec 08
sub
$0x8,%rsp
400548:
bf 00 06 40 00
mov
$0x400600,%edi
40054d:
e8 de ff ff ff
callq 400530
400552:
48 83 c4 08
add
$0x8,%rsp
400556:
c3
This problem tests your understanding of the program stack. Here are some notes to
help you work the problem:
• strcpy(char *dst, char *src) copies the string at address src (including
the terminating '\0' character) to address dst. It does not check the size of
the destination buffer.
You will need to know the hex values of the following characters:
Chapter 0 Solutions
COMPUTER SCIENCE:OVERVIEW-TEXT
Knowledge Booster
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