Is a local area network LAN an intranet?

1.A LAN is not the same as an intranet.

2.An intranet can be said to be a local area network or a metropolitan area network or a wide area network.

3.Networks are generally divided into wide area networks. Metro and LAN.

5.LANs can be large or small. There is no more accurate statement of the specifics. It depends.

6.If a company is large, the company's intranet may also be a metropolitan area network. For example, Tsinghua University's campus network is a metro area network.

A local area network (LAN) is a computer communication network that connects various computers, external devices and databases within a local geographical area (such as a school, factory and institution).

A local area network (LAN) is a computer communication network that connects various computers, external devices and databases within a local geographical area (such as a school, factory and institution). Local Area Network (LAN), as opposed to Wide Area Network (WAN), mainly refers to the computer interconnection network in a small area.

This "small area" can be a family, a school, a company, or a **department. Due to its smaller geographical range, LAN usually has much higher transmission rates than wide area networks (WANs), for example, the current LAN transmission rate is 10MB s, the FDDI transmission rate is 100MB s, and the backbone speed of WAN is currently only 64Kbps in China, and the end-user on-line rate is usually .

LAN structure

A local area network is usually a network system that is distributed over a limited geographical area, generally involving a geographical area of only a few kilometers. It has strong specialization and respectability, and has a relatively stable and standardized topology. The network of this structure is that each workstation is connected in a star-shaped way, and each node device in the network is centered on the middle defense section, and is connected with the central node through the connecting wire, and if a workstation needs to transmit data, it must first pass through the central node.

Because in the network system of this structure, the central node is the control center, and the communication between any two nodes only needs two steps at most, so the transmission speed can be cautious and fast, and the network configuration is simple, the network is easy to build, and it is easy to control and manage.

1.Are intranet and LAN concepts the same? The principle is the same, but the positioning range is different, the intranet can also be composed of many LANs, different network segments can define different LANs, and the intranet can also be composed of a large LAN.

That is, a large LAN can also be called an intranet.

2.Are intranets and the internet physically separated? It can also be separated or not, not to define the intranet and the Internet by connection, the Internet uses a public IP address, the intranet uses a private IP address, and all the intranet is connected with a public IP address is the Internet.

3.What is a private address and can the intranet be connected to the Internet? As the name suggests, the private address is private, not public, and the private is used on the intranet on the address, because the limitation of the number of IPv4 addresses makes it impossible to assign an IPv4 address to each computer in the world, and all private addresses are reserved for the IP, so that all computers in the LAN use private addresses, and all computers in the intranet use a public IP to communicate with the Internet, so that the IP address is completely saved.

Private address mask for Class A addresses.

Private address mask for Class B addresses.

Private address mask for Class C addresses.

1.Intranet. Is it the same as the concept of LAN?

The principle is the same, but the positioning range is different, and the intranet can also be composed of many LANs and different network segments.

Different LANs can be defined, and intranets can also consist of a large LAN. That is, a large LAN can also be called an intranet.

2.Are intranets and the internet physically separated?

It can also be separated or not separated, and the intranet and the Internet are not defined by connection, and the Internet uses public IP

Address, the private IP address is used in the intranet, and all the intranet is connected with the public IP address to the Internet.

3.What is a private address.

Can the intranet be connected to the Internet?

As the name suggests, the private address is private, not public, the use of Huai noise private in the intranet on the address, because of the limitation of the number of IPv4 addresses, it is impossible to assign an IPv4 survey address to each computer in the world, all of them reserve a private address for the IP, so that all computers in the LAN use the private address, and all the computers in the intranet use a public IP to communicate with the Internet, so that the IP address is completely saved.

A private address for a Class A address.

Mask. A private address for a Class B address.

Mask. A private address for a Class C address. Mask.

Local Area Network(local area network, lan) is a computer communication network composed of various computers, external devices and databases connected to each other within a radius of several kilometers within a local geographical range (such as a school, factory and institution). LAN enables functions such as file management, application software sharing, printer sharing, scheduling within workgroups, e-mail and fax communication services, and more. A LAN is closed and can consist of two computers in an office or thousands of computers in a company.

Intranet. It is the local area network, and the Internet café, campus network, and unit office network all belong to this category. In addition, fiber-to-the-building, community broadband, education network, and cable TV cable modem Internet access, although the geographical scope is relatively large, is essentially based on Ethernet technology, so it still belongs to the intranet.

Extranet (WAN).Each computer (or other network device) has one or more WAN IP addresses (or public and extranet IP addresses), and the WAN IP addresses cannot be duplicated; Each computer (or other network device) on a local area network (LAN) has one or more LAN IP addresses (or private and intranet IP addresses), and the LAN IP addresses are assigned within the LAN, and the IP addresses of different LANs can be duplicated and will not affect each other.

In the same way, if the LAN of your organization is very large, and the small LAN composed of several computers in your office is connected to the entire LAN of the unit, then it can also be said that the LAN of the unit is the external network, and the small LAN in the office is the intranet. At the same time, if the large area network of the organization is connected to the Internet, then it can also be said that the large area network of the organization is an internal network relative to the Internet.

That's not something outsiders can get on.