General Questions
What is a X forwarded for header? Identify the originating IP address of a client through a load balancer. If you need the IPV four address of your end, user, look for the X forwarded for header. What is an OSI model A conceptual framework which describes the functions of a network. Beginning with the Application layer which directly serves the end, user, down to physical layer. What the end user sees HTTP, web browsers. Different layers of the model are as follows. Presentation layer Data is in a usable format, encryption, SSH. Session Layer Maintains connections and sessions. Transport layer Transmits data using TCP and UDP. Network layer Logically routs packets based on IP address. Data Link layer Physically transmits data based on MAC addresses. Physical layer Transmits bits and bytes over physical devices. What is the difference between IOPS and throughput? IOPS Measures the number of read and write operations per second. Important metrics for Quick transactions, low latency apps,