Developers DJ

CTRL + A: Select All CTRL + B: Bold CTRL + C: Copy CTRL + D: Uses the Fill Down command to copy the contents and format of the topmost cell into the selected cells below the cells CTRL + F: Find CTRL + G: Screen the Go to dialog box CTRL + H: Replace CTRL + I: Italics CTRL + K: Screen the Insert Hyperlink dialog box for new hyperlinks or the Edit Hyperlink dialog box for selected existing hyperlinks CTRL + N: Creates a new, blank work box CTRL + O: Screen the open dialog box to open or find a file CTRL + P: Displays the print dialog box CTRL + R: Uses the Fill Right command to copy the content and format of the left side most cell into a selected range CTRL + S: Saves the active files with its current file name, location and file formats CTRL + T: Screen display the Create Table dialog box CTRL + U: Underline CTRL + V: Paste CTRL + W: Closes the selected workbook window CTRL + X: Cut CTRL: + Y: Repeated the last command or action, if possible CTR...

1s – List mkdir – Make directory pid – Print directory cd – Change directory rkdir – Remove directory rm – Remove cp – copy mv – Move my moves the file or folder from one location to another. It can also act to rename the file or folder if the file is in the current directory. cat – Concatenate and print files tar – Tar Archive man – Manual exit – end of the current terminal Su – Switch User tail – print Tail Unzip – Unzip Archive gzip – Ezip Archive grep – Remove Directory Find – Find The command searches for files matching specified criteria in the given location. You can use find ‘name to make a file. help – Help who – who is logged in free – Free memory df – Disk space free PS – Processes top – top processes clear – Clear all the command shutdown – shut down system ping – ping host what is – what is this command

Describe Wild Pointers in C’ Uninitialized minters in the c code are ‘known as Wild Pointers. These are the point to some arbitrary memory location and can cause bad program behavior or ‘programming crash’. ‘What is a dangling pointer in C? There is a pointer pointing to memory address of any specific variable, but ‘after some time the variable was deleted from the memory location while keeping’ the pointer pointing to that location. ‘What is a far pointer in c? ‘A pointer that can access all the 16 segments (whole residence memory) of RAM is known as far pointer. A far pointer is a 32-bit pointer that receives information ‘outside the memory in a given section. ‘What is pointer to pointer in c? In the case of a pointer to pointer concept, one pointer refers to the address of another ‘pointer. Generally, the pointer is a containing the (address of a variable). The pointer is the ‘pointer containing the first pointer of the address. What is memory leak? Why should i...

1.SQL injection: SQL injection SQL injection is a type of security exploit in which attackers add structured Query Language (SQL) code to a web form input box to gain access to resources or make changes to data. An SQL query is a requested for some action to be performed on the database.   2.Cross Site Scripting: Most XSS Web site hacking attacks use malicious JavaScript scripts that are 'embedded in hyperlinks'.  'When the user clicks the link,' it may steal personal information, hijack a web `session, take over a user 'account, or change the (ads that are being displayed) on a page.   3.DDOS: DDOS is a denial of service attack floods a website with a huge amount of internet traffic, causing its server to become overwhelmed and crash.  Most DDOS attacks are carried out using the computers that have been compromised with malware.  The owners of infected computers may not even be aware of their | The machine is sending requests' ...