1- classes of private IP addresses: 2- what does it mean if you have IP address of 169.XXXX - DHCP not working3- Interior/exterior gateway routing protocolsInterior It is used by routers to exchange routing data within an autonomous system.An Exterior Gateway Protocol is a routing protocol used to exchange routing information between autonomous systems.4- ISS multiple web servers5- what is GPO - group policy object6- primary key in MySQL - The primary key for a table represents the column or set of columns that you use in your most vital queries. It has an associated index, for fast query performance7- what is /var folder usually for? 8- what is /opt folder usually for?9- what is /bin folder usually for?10- Active Directory Service Interfaces Editor (ADSI Edit):is a Lightweight Directory Access Protocol (LDAP) editor that you can use to manage objects and attributes in Active Directory. ADSI Edit (adsiedit.msc) provides a view of every object and attribute in an Active Directory forest. You can use ADSI Edit to query, view, and edit attributes that are not exposed through other Active Directory Microsoft Management Console (MMC) snap-ins: Active Directory Users and Computers, Active Directory Sites and Services, Active Directory Domains and Trusts, and Active Directory Schema.what is cloud computing?The practice of using a network of remote servers hosted on the Internet to store, manage, and process data, rather than a local server or a personal computer. what exactly happens when you type www.amazon.com into the browser?"+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++1. Explain what is the role you're applying about and how you understand it?2. Explain what the cloud is?3. Have you used any AWS services in the past? Did you hit any challenges along the way setting up those services?4. Something that you are pationate to learn more of AWS?5. Explain in simple terms what is virtualizationis the creation of a virtual (rather than actual) version of something, such as an operating system, a server, a storage device or network resources.6. How does the hypervisor work?7. Types of hypervisors?8. How does the "Live motion" in VMware work? Is there hardware component that must be shared across both clusters to make that work.9. What TCP/IP is?10. What a subnet mask is used for? How it works? What it's made up of?11. In class C space, how many host can you have in that space? Is there a special IP address that cannot be used?12. Any differences between TCP and UDP?13. Tell me about different DNS record types.14. Is it possible to overwrite the DNS record at the PC?15. What's an lmhosts file used for?The LMHOSTS file is a local text file that maps IP addresses to NetBIOS names of remote servers with which you want to communicate over the TCP/IP protocol. Windows recognizes names instead of IP addresses for network requests and a name discovery process is used to correctly route network requests with TCP/IP. Because the name discovery process is generally not routed by an IP router, the LMHOSTS file allows Windows machines to communicate using TCP/IP across a subnet16. What are different RAID levels you can use? And which one would you use for specific situation? What abour RAID5?Raid 0: RAID 0 consists of striping, without mirroring or parity. The capacity of a RAID 0 volume is the sum of the capacities of the disks in the set, the same as with a spanned volume.Raid1: RAID 1 consists of mirroring, without parity or striping. Data is written identically to two (or more) drives, thereby producing a "mirrored set".RAID 10: is a combination of RAID 1 and 0 and is often denoted as RAID 1+0. It combines the mirroring of RAID 1 with the striping of RAID 0. It's the RAID level that gives the best performance, but it is also costly, requiring twice as many disks as other RAID levels, for a minimum of four. This is the RAID level ideal for highly utilized database servers or any server that's performing many write operations. RAID 10 can be implemented as hardware or software, but the general consensus is that many of the performance advantages are lost when you use software RAID 10.

RAID 0+1 is often interchanged for RAID 10 (which is RAID 1+0), but the two are not same. RAID 0+1 is a mirrored array with segments that are RAID 0 arrays. It's implemented in specific infrastructures requiring high performance but not a high level of scalability.

Raid 5: consists of block-level striping with distributed parity. Unlike in RAID 4, parity information is distributed among the drives. It requires that all drives but one be present to operate. Upon failure of a single drive, subsequent reads can be calculated from the distributed parity such that no data is lost. RAID 5 requires at least three disksRaid6: consists of block-level striping with double distributed parity. Double parity provides fault tolerance up to two failed drives. This makes larger RAID groups more practical, especially for high-availability systems, as large-capacity drives take longer to restore. As with RAID 5, a single drive failure results in reduced performance of the entire array until the failed drive has been.

17. Windows PC has an IP address 169.254.X.X. What does it typically mean and whit the cause? How would you troubleshoot it? What would you look for on the DHCP server? Is there any log you can look at?18. Windows Blue Screen of Death, what are the troubleshooting steps there?19. How to log in to a PC that might be bluescreening?20. When you press F8, there is an option "Last known good configuration" can you explain exactly what that is?21. There is a customer who used to be able to connect to a Windows server on the internet over remote desktop, they now report they are unable to do so.22. Can you explain what DCOM is and why it may not sometimes work?DCOM (Distributed Component Object Model) is a set of Microsoft concepts and program interfaces in which client program object s can request services from server program objects on other computers in a network. DCOM is based on the Component Object Model (COM), which provides a set of interfaces allowing clients and servers to communicate within the same computer (that is running Windows 95 or a later version). the difficulties involved in getting either of these technologies to work over Internet firewalls, and on unknown and insecure machines.23. How would you start a windows service for remote machine over the network.24. A big difference between 32-bit processors and 64-bit processors is the number of calculations per second they can perform, which affects the speed at which they can complete tasks.25. Less is a full-screen application that gives you a searchable, scrollable window and clears the screen after you exit, less can also be backgrounded and restored like other full screen terminal applications. less also has a command to open the currently viewed file in your default editor.more just prints the text as is, stopping for page breaks, and does not clear the screen, it can be backgrounded but it doesn't clear the screen. more also only reads in the file as it displays where less may read the file into memory first. each handles line wrapping differently which gives different results when selecting and pasting text.