Piezoelectricity is the property of certain matter to generate an electric charge when subjected to mechanical stress or pressure. Piezoelectric Effect When mechanical pressure is applied to a piezoelectric material, the internal structure of the piezoelectric material changes which causes a separation of positive and negative charges and this charge imbalance builds an electric field…
Author: kingsanit
FLOPS
FLOPS (Floating Point Operations Per Second) is a performance metric that is used to measure the performance of a computer with respect to its ability to perform mathematical calculations of floating point numbers (numbers with decimal points) like addition, subtraction, multiplication, and division. Following are various FLOPS metrics used KiloFLOPS KFLOPS 1000 FLOPS MegaFLOPS MFLOPS…
Botnet
Botnet also known as roBOT NETwork is a network of compromised computers called bots also known as zombies that are infected with malware (virus, worms, trojan) and controlled remotely by a attacker. The bots in the network are controlled by the attacker and used to perform attacks DDoS (Distributed Denial of Service attack), data theft, data mining,…
Computer Zombies (Bots)
Zombies also known as Bots are computers that are connected to Internet which have been compromised by malware (viruses, worms, trojans) and is controlled remotely by an attacker. Attackers use Zombie is used to attack a target. The Zombie act individually but are mostly part of a bigger group known as Botnet. Attacker use Botnet…
Social Engineering
Social Engineering is the act of manipulating people and getting confidential information which is not accessible in normal circumstances. It is technique used as part of Active Footprinting where an attacker tries to gather information about a target initially before further moving in other phases of Cyber Kill Chain of an attack. Social Engineering relies…
Phishing
Phishing is an act where an attacker impersonates as a legitimate person or entity and deceives a target to get sensitive information by sending emails, texts, SMS or having voice calls. The following are different techniques used in phishing attack.
Cycles Per Instruction (CPI)
Cycles Per Instruction (CPI) as known as Clock Cycle Per Instructions or Clocks Per Instruction is the number of clock cycles per cycle. It’s a critical metric with which a computer’s performance is measured and assessed. CPI Formula CPI = Total CPU Cycles / Total Instructions
Domain Name Service (DNS)
Domain Name Service (DNS) provides naming service for computers and services. It has a database of mappings of hostnames to IP addresses. Client which wants to access target services on a server, connects to the hostnames. To resolve the hostname, the client send requests to the DNS server and gets the IP address. Using the…
Computer Organization
Computer Organization is the collection of hardware units and their interconnection. It refers to how different operational components like processor, memory and peripheral devices are connected and their roles played when executing an instruction given to the computer.
Computer Architecture
Computer Architecture is the structure and behavior of a Computer that is visible to a programmer. A programmer uses the computer to execute a set of instructions for a specific objective. Computer Architecture is used interchangeably with Instruction Set. The Instruction Set is which that outlines the Computer Architecture.