DNS stands for Domain Name Servers and it is a list of all the domains and then gets translated into IP addresses.

A VPN is a virtual private network that allows safe use of the Internet and safe surfing. It builds a layer of security on top of the Internet and browsing through this isolated network, greatly helps to keep your data away from prying eyes.

OSI model is short for Open System Interconnection and is the ISO standard for networking across the World Wide Web. OSI model sets up a network limit (framework) to attach protocols in seven different layers. Starting at one station, all the way down to the bottom of the chain. Known OSI models are for example the X400 or the X500 and some of them are still very popular as the ones for e-mail and directory. Older OSI models now serve as a teaching or a practice method for all the protocols that need to be implemented.

A gateway is a method of connecting two different networks with different protocols, making an internetworking connection. Internetworking explains the act of communication between the two networks. The gateways are usually set up on the “end” or “edge” of the network and their function is not just to set up communication with another network, but to protect the network as well. That is why the gateways also come with firewalls. Simply like connecting several computers in a local network with a router (which in that case serves as a gateway). They operate on any level in OSI.

An IP address is your personal data identifier. All the computers that are on the web, communicate through IP addresses as to faster identify the specified and wanted computer and then transfer data to it. IP addresses are vital for one network to function. Picture it as a spider’s web with all the little dots in-between the web. Those dots are the IP address, the unique identifiers on every location, on every computer on the web.

It will optimize your PC and help you maintain your data more effectively. Having all the data on only one partition can be of great risk if, for example, your Windows crashes for good. Always separate the backup files and all the other things on different partitions. Even try to put a boot-up OS version on one partition. It will help immensely.

The graphic components of your PC are on a separated card that has its own slot and gets plugged into the motherboard. That is why these components are called graphic cards. You should mention that laptops usually have their graphic components built into the motherboard.

The graphic driver is a program that controls and oversees how your graphic components respond to everything else in your software.

The basic parts of a PC are a computer case, a monitor, keyboard, mouse, and the power cord. Each of these parts has its own value and an important role to get a PC working. Make sure you mentioned them and explain briefly what their function is.

This question is related to the last one, and how you will answer it should just be an honest answer of whether you have been granted custodianship of an organization administrator password. As you most likely know, often A+-certified computer technicians will need access to this password in order to make changes to end-user computers and/or user profiles. This position would actually be quite limited to only basic tasks without the use of an administrator password, so if you have practical work experience in this area you probably have used this password before.

Yes, DRAM is a valuable thing to upgrade when thinking about boosting your system performance. The fact is, it does not upgrade your CPU in terms of faster response, but on the other hand, it reduces the time the CPU waits for information from the hard drive.

If RAM is random-access memory, DRAM is Dynamic random-access memory. What does that mean? It means that it stores every BIT of data from the PC in one circuit. DRAM shifts between two states, being charged or discharged so its value is either 0 or 1.

Microprocessors are small, programmable, multi-tasking devices that can input data, process it, and then provide the outcome as the output results. Their functionality used to be integrating data from the CPU on one integrated circuit or more, but now all the CPUs are microprocessors. Their functionality is based on the binary system and includes symbols and numbers. Integrating the whole CPU on just one chip saves a lot of processing power.

INI – allows you to choose the OS or the OS with different boot options.

NTLDR – the boot loader, not in vista, located in the root of the active disk partition, reads the boot.ini, if XP is selected, it runs ntdetect.com, then it runs ntoskrnl.exe and hal.dll, then reads the registry and loads device drivers.

COM – to get information about hardware run by ntldr.

SYS – used to boot windows from SCSI disk devices.

FireWire is a type of device that can transfer information between all sorts of digital devices, including audio and video equipment and it is also easy to use. It can be plugged or unplugged while the power is on and the PC will respond to it automatically. Installing the driver means that the PC and FireWire can start working and sharing information immediately.

A modem or a modulator-demodulator is a device that converts the waves coming from telephones and cables and then processes them into the computer. The PC has digital information and telephones usually send analog waves. The modems function is receiving and converting these waves, creating communication.

The cache RAM or sometimes known as SRAM is the place where often used data is stored on a regular basis. It is a small high-speed memory box positioned behind the CPU and above the main memory. The processor always firstly checks the SRAM, before proceeding somewhere else.

ROM and RAM are both memories but differ in their functions. ROM (Read-only memory) is a memory that reads and storages codes of the programs that run under the processor, while RAM (random-accessible memory) runs only temporarily while power is on and the PC is working. ROM continues to store data even when power is off. That’s why RAM is more important for video gaming, so it can support more.

Operating System is the software that provides the ability to run computer applications. It

1. Connects you to devices on your computer.

The modem is an acronym for a modulated-demodulator. It can be defined as a device that helps to convert Telephonic waves and cable waves. And it processes those waves into the computer. The primary function of a murder mystery And convert Telephone Nick and cable waves To facilitate communication.

The rigid drive connectors are connected with A variety of integrated disc controllers. And the different types of Hard Disc Drive Connectors are; ITE, EITE, PATA, SATA, SCSI, et cetera.  

The difference between a gateway and a router Is that a gateway Conveys data between different networks. At the same time, a router conveys data between two similar systems.

A gateway can be defined as a hardware device. And one can connect this hardware device to two or more networks at a time; it can be denoted as a router, firewall, server, or any other device Which works as a gateway. The significant role of a gateway is to regulate traffic in the network.

Types of CPU technologies are cache, overclocking, microcode, throttling, multicore, and hyper-threading. It’s a plus to be able to work with all of these.

Types of CPU technologies are Hyper-Threading, Multicore, Throttling, Microcode, Overclocking, and Cache.

Computer memory is where your computer stores the data.

A system board, also known as a motherboard is the main board of the computer.

The storage device is the place where the computer data is stored when it is not in use.

A personal computer (PC) is a system of components that work together, A PC is computer hardware – not an operating system or application.

The Computing Technology Industry Association is an American non-profit trade association, issuing professional certifications for the information technology industry. It is considered one of the IT industry's top trade associations.

CompTIA

I have an html report I'm enhancing in notepad++. It has round one thousand hyperlinks like below in a file that is 60,000 traces lengthy:

                                            &nbsp; Discussion &nbsp;

4

</a>

I need the whole hyperlink <a href... - '/a> long past. The problem I maintain going for walks into is the quantity in among the span tags is distinct. Above it's miles 4. I need to discover all of them and replace them with clean areas. I was trying to mess around with a few different regex alternatives I examine approximately even as looking for a solution however none worked for me.

I found I was easily able to do this with my Sublime text editor with a wildcard(.*) Notepad++ was NOT the way to go.:

<a href="https://www.examtopics.com/exams/comptia/sy0-501/view/#" class="btn btn-secondary question-discussion-button d-print-none">
 
 &nbsp; Discussion &nbsp;
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Notepad++ Find in HTML string

My information is that a hash code and checksum are similar matters - a numeric value, computed for a block of data, that is rather specific.

i.e. The probability of  blocks of data yielding the equal numeric hash/checksum fee is low enough that it can be left out for the purposes of the utility.

So do we have two words for the same thing, or are there important differences between hash codes and checksums?

A checksum (such as CRC32) is to prevent accidental changes. If one byte changes, the checksum changes. The checksum is not safe to protect against malicious changes: it is pretty easy to create a file with a particular checksum.

A hash function maps some data to other data. It is often used to speed up comparisons or create a hash table. Not all hash functions are secure and the hash does not necessarily changes when the data changes.

A cryptographic hash function (such as SHA1) is a checksum that is secure against malicious changes. It is pretty hard to create a file with a specific cryptographic hash.

To make things more complicated, cryptographic hash functions are sometimes simply referred to as hash functions.

Hash Code and Checksum - what's the difference?

I would like to understand what are the certificates to be had for programming, like

   What are the anothers? Javascript? C++? Python? etc.... 

What are the most valuable certification available for Programming?

Solar's virtualbox home windows binaries are below 'non-industrial' license so can't be used in any company. But source code is APL. Is it any aid on the network that has a virtualbox compiled binaries for windows?

virtualbox ose windows binaries

When write https://new.example.com/course/comptia and go to source code, write all requests send to index.php in htaccess then when view url in my source code with plugins alls send to index.php like App/Assets/... when click on it send me to https://new.example.com/course/App/Assets/...

course-> not directory how when click to App/Assets/... Send Me To https://new.example.com/App/Assets/... To Main domain without query request uri ?

I want to redirect all requests to main domain

CompTIA's Network+ CertMaster Learn content agrees with Wikipedia that some use port TCP port 22 for SFTP or FTP over SSH (https://en.wikipedia.org/wiki/SSH_File_Transfer_Protocol). But IANA's RFC6335 states differently:

TCP/UDP port 115 is the Simple File Transfer Protocol (SFTP) https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=115

TCP/UDP port 22 is the Secure Shell Protocol (SSH) https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=22

I submitted the question to CompTIA but haven't hear back from them yet.

What is the correct port answer for SFTP - 115 or 22? 

I have heard about "principal based security", "role based security", "component centric security", and in .NET, I get to know that the Code Access Security (CAS) is kind of a "origin based security". So are there any other security models? And what technically do they mean? Could someone give me some explanations, or point me to some reference? 

How many kinds of "Security Models" are there?

I was reading the Comptia network+ All in One Guide by Mike Meyers, and I came across this line:


"The application layer does not refer to the applications themselves, rather it refers to the code built into the Operating System that enables making network aware applications."


So my question is, do the functions like connect, bind, listen comprise of the application layer ?

What is the application layer specifically?

i am a newbie to cloud computing and studying for Comptia CLOUD+ Exam. I am confused between Vendor and Provider. it says in the book that vendor sells solutions to customer.I am not able to figure out like what solutions.. how is it different from providers?  

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openvirtualbox ose windows binaries

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openI want to redirect all requests to main domain

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openWhat is the correct port answer for SFTP - 115 or 22?

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openHow many kinds of "Security Models" are there?

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3

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openHash Code and Checksum - what's the difference?

2

1

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openWhat are the most valuable certification available for Programming?

1

0

0

openvirtualbox ose windows binaries

2

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openI want to redirect all requests to main domain

1

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openWhat is the correct port answer for SFTP - 115 or 22?

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