Answer:
Its called a scanner
Explanation:
Its a device that helps enable in the reading of daya and info printed on paper like a text, image, photos, and drawing by using optical tech
When we talk about TCP/IP, we are talking about a protocol suite designed as a layered approach and used to interconnect computing devices across the entire continent. Internet Protocol (IP) is like the epitome protocol of the entire TCP/IP protocol suite and helps in the delivery of services. This IP is encapsulated into an IP header before your message is sent. Having briefly discussed about the IP protocol and the encapsulation, here is where typical TCP/IP attacks occur.
Explanation:
- IP address spoofing – As mentioned above, IP is encapsulated into packet headers and inside of those headers are information such as IP source and destination addresses. IP source and destination addresses are needed by the routers to determine the best route path. If hackers can get access to the IP layer, they could easily spoof the source address and somehow make it pretend as if it was another legit host.
- TCP sequence number prediction attack– This is very common. TCT/IP protocol suite contains a three way handshake. For instance, when you do a web search, what is happening is that you are sending information to the server. The server will receive this info and send an acknowledgment receipt with the information it received back to you. You will then send an acknowledgment message to the server and communication will be established. In between this handshake, there is a sequence number called ISN that hackers are able to predict from their own host computers, and this sequence number could send malicious packets to impersonate another source host on a network.
- Port Scanning – It is not a technique used to directly launch an attack. However, hackers can use port scanning to scan a target network for exploitable open ports or listening servers.
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A good way to understand how a processor works is to imagine that your job is to tell a thousand people how to do their jobs. The faster you can do that, the faster everyone works. Computer processors, or chips, operate in a similar fashion. A processor provides the instructions that multiple applications and processes need to perform their jobs. The faster it does that, the faster a computer operates. Faster computers often translate into increased productivity and efficiency. Computers onboard Apollo 11 in 1969 were less powerful than a cell phone. Today, technological advances in chip manufacturing make it possible for computers with faster processors to run programs, play movies and blaze through complex calculations at remarkable speeds.
Processors and Other Computer Components
Your processor also communicates with other computer components, such as memory and the hard drive. Because these components work together, a slow hard drive could make an application run slowly even if your computer has a very fast processor. Random Access Memory, or RAM, stores information that applications need. Windows and other applications move data into memory and read it back continuously. If your RAM reads and writes data slowly, that may also slow your computer down.
Clock Speed
It may be tempting to buy a processor because it advertises a fast clock speed. However, clock speed, as Computer Shopper notes, “is only marginally useful in gauging how ‘fast’ a CPU really is.” That’s because a chip’s architecture, cache and other factors also influence your computing speed. Clock speed refers to the number of cycles that a processor executes per second. A cycle is a unit of measurement during which a processor executes instructions. If you see a processor that has a rating of 3.1 GHz, it operates at 3.1 billion cycles per second.
Cores vs. Speed
A processor’s core count can be more important than its speed. You may have seen the terms dual-core or quad-core when reviewing processors. A dual-core chip consists of two processors while a quad-core chip contains four. You’ll find a quad-core chip useful if you like to run multiple applications at once or run programs designed to take advantage of four cores. Like their single-core counterparts, multi-core processors also perform faster when they have higher clock speeds.
Buying Tips
Whether you’re on a budget or you have extra money to spend, it’s important to shop for processors carefully. PCMag tells readers to purchase as much processing power as they can fit into their budgets because it’s not always easy to upgrade to a newer processor. Store technicians can offer purchasing advice if you visit electronic stores, while online review sites can help when you shop online. If you can visit a store, try out computers they have on display and see how fast they operate when you work with sample applications that you may use at work.
Depending where you are in the world it is true and false