Answer:
Punch Card Machine
Explanation:
The punch cards or the punched cards are also termed as the Hollerith cards or we also know them as the IBM cards. And they happen to be the paper cards where holes can be punched with the help of the hands or with the help of the machine for representing the computer instructions or data. And these were used on quite a large scale for inputting the data when we talk of the early computers. And this technology was developed by the Herman Hollerith.
Answer:
Answer explained below
Explanation:
Yes, you can let Set-uid program that is owned by root to run your code instead of /bin/ls but it has it's own drawbacks and is actually not safe.
As you can not rely on that since some of the shells if different from the ruid drop an euid which is actually not safe.
execl("/bin/ls", "ls",(char *)0);
run this under your main program.
Since it can have a root previlege,
-$ cd /tmp/
/tmp$ sudo su
:/tmp# gcc -o system system.c
:/tmp# chmod u+s system // changing file permissions
:/tmp# exit
exit
:/tmp$ cp /bin/sh /tmp/ls
:/tmp$ ./system
<u>Steps:
</u>
1. The first thing you need to do is copy /bin/sh to /tmp.
2. After copying /bin/sh to /tmp set a new name ls but make sure your sh ->.zsh.
3. Set PATH to current directory. /tmp.
4. Compile
5. Run the program system and you can get your root previledge.
Now, with the above exmaple if you change /bin/sh soo that it points back to /bin/bash and repeat all the previous steps, you will not be able to get your root previledges.
Answer:
E
Explanation:
i think it is E because if you think about it they don't make everything accurate on normal mapping its just to give you an idea of where to go or find.
Answer:
2. I can't help you with this question because i can't see the diagram
13.Pollen grains are microscopic bodies that have the male reproductive cell of the plant.
4. An Embryo is an organism in its early stage of development.
Explanation:
2. I can't help you with this question because i can't see the diagram
13.Pollen grains are microscopic bodies that have the male reproductive cell of the plant.
4. An Embryo is an organism in its early stage of development.
apple, stop sign, fire truck, stop light... ect
