How about Zhongyu Network Company? How about Zhongyu Network Company?

It should be reliable.

Beijing Zhongyu Yongxin Network Technology Co., Ltd. (hereinafter referred to as Zhongyu.com) was established on 20 13. It is a high-tech enterprise in Zhongguancun, which specializes in providing website security encryption, website authentication, electronic signature and comprehensive network services for enterprises and institutions. Headquartered in Beijing, it has four branches in Tianjin, Hebei and Henan, covering the whole country and serving nearly 65,438+million customers. Recently, Zhongyu Yongxin has often fallen into the development center.

Zhongyu Yongxin is an operator providing comprehensive Internet consulting and solutions. The company is operated by a first-class team in the domestic Internet industry, and the management of the team has all held management positions in Fortune 500 companies. Zhongyu Yongxin has been committed to providing comprehensive Internet services such as domain name registration, virtual hosting, corporate post office, website planning and website promotion for the government and group enterprises.

Is Chinanet a metropolitan area network?

Chinanet is not a metropolitan area network, but a Chinese public computer Internet managed by the post and telecommunications department based on Internet network technology.

Computer networks are classified according to geographical coverage. Computer networks can be divided into three categories: local area network, metropolitan area network and wide area network.

1, local area network (LAN): LAN is a network composed of multiple computers used in a small area. The coverage is usually limited to 10 km, which belongs to the small purse seine set by the unit or department.

2. Metropolitan Area Network (MAN): MAN is a network, whose scope of action is between WAN and LAN, and the network coverage can usually be extended to the whole city. With the help of communication optical fiber, multiple LANs are connected with public city networks to form a large-scale network, which can not only share the resources within LANs, but also share the resources between LANs.

3. Wide Area Network (WAN): Guangcheng Network is a long-distance network, involving long-distance communication, covering one or more countries and even the whole world. Because the geographical distance of WAN can exceed several meters, the information attenuation is very serious. This kind of network generally needs to rent a dedicated line and connect with the line through the interface information processing protocol to form a mesh structure to solve the path-finding problem.

What does China Tietong do?

China Tietong mainly serves the telecom and data services around the national railway lines.

From 200/kloc-0 to 2003, CTT adopted advanced technology to integrate, expand and transform the existing network, and basically completed the construction of basic communication networks such as long-distance transmission network, switching network, data network, metropolitan area network, railway communication and interconnection, and had the ability to provide telecommunications services to the public, realizing the transformation of railway private communication network into public telecommunication network.

At present, all kinds of network services of Tietong Company cover nearly 300 local networks in China. The communication line is 6.5438+0.5 million kilometers, of which the optical cable line is 6.5438+0.5 million kilometers; The total capacity of local telephone exchanges exceeds 6,543,800 lines; There are nearly 300,000 data network service ports; Digital microwave is 3600 kilometers.

Extended data:

China Tietong merged into China Mobile: On May 23, 2008, China Mobile Communications Group announced that China Tietong Group Co., Ltd. was merged into China Mobile Communications Group Co., Ltd. and became its wholly-owned subsidiary, which will remain relatively independent at present.

Zhao, Chairman of China Tietong, was appointed as Deputy General Manager of China Mobile. At present, Zhao is also the chairman, party secretary and general manager of China Tietong Group Co., Ltd., and the former general manager of China Tietong was transferred to Tianjin Mobile.

What is an intelligent metropolitan area network?

In the service architecture of intelligent metropolitan area network, intelligent metropolitan area network belongs to the network layer.

Intelligent Metropolitan Area Network (MAN) is a new type of MAN of China Unicom, which is oriented to the 5G era, with the integration of cloud and network and the combination of reality and reality. By introducing new protocols such as SRMPLS/SRv6, EVPN and the latest visualization scheme innovation technologies such as iFIT, network flexibility, intelligent connection and intelligent operation and maintenance are realized. The new intelligent metropolitan area network will break the independent chimney network architecture and build a converged bearer network platform.