No, I believe it is "You should use proper grammar when asking a question".
Complete Question:
An attacker gained remote access to a user's computer by exploiting a vulnerability in a piece of software on the device. The attacker sent data that was able to manipulate the return address that is reserved to store expected data. Which vulnerability exploit resulted from the attacker's actions?
Answer:
A buffer overflow.
Explanation:
In Computer science, a buffer can be defined as a temporary area set aside for data storage. Buffers reside in the random access memory (RAM).
In the event that, a system process or program places more data (much more than what was originally or initially intended to be allocated for data storage) in a buffer, the extra data overflows. Consequently, this would result in having some of the data to flow into other buffers and thus, causing the data to be overwritten or corruption of the data being held in that buffer.
For example, we can liken a buffer-overflow to pouring water (data) into a container (program memory), once it is filled the water begins to overflow as the container has reached its maximum amount.
In this scenario, the vulnerability exploit which resulted from the attacker's actions by manipulating the return address that is reserved to store an expected amount of data is referred to as a buffer overflow.
Answer:
To provide remote network access to the users to work, the network administrator can use virtual private network (VPN) along with some firewall to protect the system from hackers and other security threats.
Explanation:
Virtual Private Network (VPN) can be used to provide remote access to the users who are currently working from some remote areas. Many companies who have their branches or franchises in different parts of the city uses VPN to connect then all with the company server.
In this way, a firewall has been needed that protect the systems of users as well as company to protect from different security hazards such as hackers, authorization of the users and other security threats.
in this case, 12 em[employees who need remote access to the network can be connected through VPN along with the installation of some suitable firewall.
Answer:
D. 1K
Explanation:
The address space 0x0000-0x3FF is of 1KB(One Kilo Byte) since 0x3ff is equal to 1023. therefore 1023=1 KB.
bitwise 0x3ff zeros out the top bits of the number such that the result is always between 0 and 1023. It is essentially the same thing as modulo( num,1024) for positive values of num.
Hence the answer is D 1K
