Important Formula

Define Dns In Networking. Tcp and ip work closely together, which is why they’re usually referenced like. A typical uncached dns lookup will involve both recursive and iterative queries.

The dns resolver is the first stop in the dns lookup, and it is responsible for dealing with the client that made the initial request. In simple terms, a domain name system (dns) is a collection of databases that translate hostnames to ip addresses. Whenever people type domain names, like fortinet.com or yahoo.com, into the address bar of web browsers, the dns finds the right ip address.

Define Fixed Cost And Variable Cost. The term fixed cost refers to a cost that does not change with an increase or decrease in the number of goods or services produced or sold. As per the definition, fixed cost is borne by the company throughout its functional period while variable cost changes.

Let us examine the main points of distinction in fixed costs and variable costs: Here's a look at the primary differences between fixed and variable costs: Fixed costs stay the same no matter how many sales you make,.

Define Financial Leverage Ratio. What is a leverage ratio? However, an excessive amount of financial leverage increases.

Total debt = short term debt + long term debt. Debt can be borrowing funds from banks in the form of a loan or by issuing. Investors use leverage ratios to understand how a company plans to meet its.

Define Star Network Topology. A bus, but the benefit is that if a cable fails, just one node is going to be brought down. A bus, but the benefit is that if a cable fails, only one node will be brought down.

Star topology is a network topology in which each network component is physically connected to a central node such as a router, hub or switch. I have seen numerous materials that refer to a central hub, and while this is correct terminology, i find some people get fixated on the word hub.that central point could be a hub device, it could be a switch, it could be a router, or it could be a server. Star topology is used to:

Define A Relational Database. The use of foreign keys enables tables to be linked to form relationships. A relational database stores and connects data in tables and columns, emphasizing the relationships between the data.

A foreign key is a field in a table that is also a key field in another table. A relational database is a type of database that stores and provides access to data points that are related to one another. The use of foreign keys enables tables to be linked to form relationships.