What are the two meanings of record?

What are the two meanings of record?

1 : something written to give proof of something or tell about past events I read the historical record. 3 : a performance or achievement that is the best of its kind It’s a new record for the fastest mile. 4 : the known or recorded facts about a person or thing He has a good school record.

What does a record contain?

In computer science, a record (also called a structure, struct, or compound data) is a basic data structure. Records in a database or spreadsheet are usually called “rows”. A personnel record might contain a name , a salary , and a rank .

What is a record give example?

A record is a database entry that may contain one or more values. For example, a personnel record may contain an ID number, name, birthdate, and photo, which are all different data types. Individual fields within the personnel record can be easily accessed or compared with other records using a database query.

Is an A record required?

“A records (also known as host records) are the central records of DNS. These records link a domain, or subdomain, to an IP address. A / AAAA record is to redirect your domain to particular IP. If you set NS records for your share hosting then there is no need to set an A record in DNS manager.

Should I use Cname or a record?

General rules: Use an A record if you manage which IP addresses are assigned to a particular machine, or if the IP are fixed (this is the most common case). Use a CNAME record if you want to alias one name to another name, and you don’t need other records (such as MX records for emails) for the same name.

Can an A record point to another domain?

A CNAME record must always point to another domain name and never directly to an IP address. A CNAME record cannot co-exist with another record for the same name. It’s not possible to have both a CNAME and TXT record for www.example.com .

Can you have 2 A records?

You can do a lot with A records, including using multiple A records for the same domain in order to provide redundancy and fallbacks. Additionally, multiple names could point to the same address, in which case each would have its own A record pointing to that same IP address. The DNS A record is specified by RFC 1035.

Can two servers have the same hostname?

In short, yes….you may screw up the DHCP, DNS & WINS. If you are unsure, always use different hostnames as a general rule. It will screw with netbios name resolution and if you use the network discovery to access resources on other machines by hostname it will act wonky.

Is hostname same as server name?

hostname is the correct term when referring to the name of a machine, as opposed to its IP address. With “server name” or “machine name” it is intended, well, the name (hostname) of the server or the machine. Note that the hostname (e.g. jupiter ) usually doesn’t include the domain name (e.g. example.org ).

Can a hostname have multiple IP addresses?

The hosts file allows no way of distinguishing different “record types” for its resolution. So for hostname to IP address mapping, you only get one IP address per hostname (but multiple hostnames could resolve to the same IP address, which is the opposite).

Can one IP address have multiple hostnames?

7 Answers. Yes, this is an extremely common practice. It is called a Shared Web Hosting: In name-based virtual hosting, also called shared IP hosting, the virtual hosts serve multiple hostnames on a single machine with a single IP address.

Can a server have multiple DNS names?

5 Answers. If you want the servers srv and srv-new to point to the same physical machine, you can do this with DNS by just adding another A record in your DNS server. If you wanted to set up two GUIDs for it, that’s not possible.

What is the difference between IP address and hostname?

The main difference between IP address and hostname is that IP address is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication while hostname is a label assigned to a network that sends the user to a specific website or a webpage.

What is DNS based load balancing?

DNS load balancing is the practice of configuring a domain in the Domain Name System (DNS) such that client requests to the domain are distributed across a group of server machines. To review general information about load balancers, see Save 80% Compared to Hardware Load Balancers.

What happens if Load Balancer goes down?

If one load balancer fails, the secondary picks up the failure and becomes active. They have a heartbeat link between them that monitors status. If all load balancers fail (or are accidentally misconfigured), servers down-stream are knocked offline until the problem is resolved, or you manually route around them.

Does a load balancer have an IP address?

These are the IP addresses where the clients should send the requests that are destined for the load balancer. However, Classic Load Balancers and Application Load Balancers use the private IP addresses associated with their elastic network interfaces as the source IP address for requests forwarded to your web servers.

What is Internet load balancing?

Internet load balancing is a method of splitting internet traffic over two or more internet connections in order to: Improve end-user performance; and. Increase reliability of internet connectivity.

What is router load balancing?

A load-balancing router attempts to route Internet traffic optimally across two or more broadband connections to deliver a better experience to broadband users simultaneously accessing Internet applications.

How do you do load balancing?

Load Balancing Algorithms

1. Round Robin – Requests are distributed across the group of servers sequentially.
2. Least Connections – A new request is sent to the server with the fewest current connections to clients.
3. Least Time – Sends requests to the server selected by a formula that combines the.

What is the best load balancer?

The five best Load Balancers for today’s online businesses

• F5 Load Balancer BIG-IP platforms.
• A10 Application Delivery & Load Balancer.
• Citrix ADC (formerly NetScaler ADC)
• Avi Vantage Software Load Balancer.
• Radware’s Alteon Application Delivery Controller.

Is Load Balancer a hardware or software?

A hardware load balancer is a hardware device with a specialized operating system that distributes web application traffic across a cluster of application servers. To ensure optimal performance, the hardware load balancer distributes traffic according to customized rules so that application servers are not overwhelmed.

What is Level 4 load balancing?

What is layer 4 load-balancing? A layer 4 load-balancer takes routing decision based on IPs and TCP or UDP ports. It has a packet view of the traffic exchanged between the client and a server which means it takes decisions packet by packet. The layer 4 connection is established between the client and the server.

Why load balancer is required?

Load balancing is defined as the methodical and efficient distribution of network or application traffic across multiple servers in a server farm. Each load balancer sits between client devices and backend servers, receiving and then distributing incoming requests to any available server capable of fulfilling them.