Google Interview Hacks

What is Placements ? Locations on the display network where ads can appear. (Where Google Ads can appear) What is Display Network (GDN) ? Larger area of where ads can appear. Comprised of websites, videos, and apps that partner with Google What is Ad Rank ? A value that's used to determine your ad position and whether your ads will show at all. Ad Rank is calculated using your bid amount, the components of quality score, and the expected impact of extensions and other ad formats What is Quality Score ? Expected clickthrough rate, ad relevance, and landing page experience What is Ad Extensions ? A feature that shows extra business information with your ad, like an address, phone number, store rating, or more webpage links (what else the ad links to) What is Max CPC Bid ? Maximum cost-per-click; the maximum amount you're willing to pay for each click on your ad What is Ad Auction ? The process that happens with each Google sear...

What are the steps of the Linux Boot Process? 1. BIOS (Power On Self Test), loads MBR 2. MBR - Master Boot Record, loads and executes GRUB boot loader 3. GRUB - GRand Unified Bootloader, loads and executes the kernel and initrd image. 3. Kernel - Mounts the root file system as specified in the "root=" in 4. Init - to determine run level 5. Run Level Programs - Services and programs are loaded depending on the run level What is the MBR? * Master Boot Record * Located in the first sector of the bootable disk (/dev/hda or /dev/sda) * 512 bytes * Primary Boot Loader 446 bytes * Partition Table Info 64 bytes * MBR validation check 2 bytes * Contains info about the GRUB * MBR executes the GRUB boot loader What are the most common network protocols and ports? * SSH - Port 22 * Telnet - Port 23 * SMTP - Port 25 * DNS - Port 53 * BOOTP - Port 67 * HTTP - Port 80 * HTTPS - Port 443 What is Apache? Most commonly used web server software. What is MySQL...