IT Interview Questions

1. what is the source for metrics? -
   measure objects.
2. Why do we need metrics and sets? -
   Metrics are used for analysis and Sets are used for grouping.
3. Is there any bug in 6.x? -
   In earlier version of 6.0 they had, but 6.5 is the best version with out any bugs.
4. What are the general issues in migration process? -
   Alignment, performance.
5. What is the use of BO SDK? -
   Bo SDK main use is to suppress “no data to fetch” using Macros.
6. How can we improve performance? -
   By making use of Aggregate tables.

Frequently a question of the programs printing out their own output appears in code interviews. The question does not really test a skill of a programmer, as much as general awareness of tricks to do that. The quine page by Gary Thompson provides many examples of such applications in various languages. In case you were wondering, a program whose output is its own source code is called a quine, something that might come of use over the next interview. The aforementioned Quine Page lists the following example for C:
char*f=”char*f=%c%s%c;main()
{printf(f,34,f,34,10);}%c”;
main(){printf(f,34,f,34,10);}
One language that’s missing, however, is PHP. In PHP a helpful function and __FILE__ constant allow for this quick hack:
echo file_get_contents(__FILE__);

Implementing itoa function is a popular interview question. Here’s one implementation from SAP.

char *itoa(int value)
{
int count,                   /* number of characters in string       */
i,                       /* loop control variable                */
sign;                    /* determine if the value is negative   */
char *ptr,                   /* temporary pointer, index into string */
*string,                /* return value                         */
*temp;                  /* temporary string array               */

count = 0;
if ((sign = value) < 0) /* assign value to sign, if negative */
{ /* keep track and invert value */
value = -value;
count++; /* increment count */
}

1. Describe how the DHCP lease is obtained.
   It’s a four-step process consisting of (a) IP request, (b) IP offer, © IP selection and (d) acknowledgement.
2. I can’t seem to access the Internet, don’t have any access to the corporate network and on ipconfig my address is 169.254.*.*. What happened?
   The 169.254.*.* netmask is assigned to Windows machines running 98/2000/XP if the DHCP server is not available. The name for the technology is APIPA (Automatic Private Internet Protocol Addressing).
3. We’ve installed a new Windows-based DHCP server, however, the users do not seem to be getting DHCP leases off of it. The server must be authorized first with the Active Directory.

1. How do you double-boot a Win 2003 server box? The Boot.ini file is set as read-only, system, and hidden to prevent unwanted editing. To change the Boot.ini timeout and default settings, use the System option in Control Panel from the Advanced tab and select Startup.
2. What do you do if earlier application doesn’t run on Windows Server 2003? When an application that ran on an earlier legacy version of Windows cannot be loaded during the setup function or if it later malfunctions, you must run the compatibility mode function. This is accomplished by right-clicking the application or setup program and selecting Properties –> Compatibility –> selecting the previously supported operating system.