Which switching type will allow the communication

Once you have half dozen computers in regular use, I suggest shifting to a router configuration, even if the router is still using PPP. As much as possible, I suggest static IP address assignment, and intelligent inverse name server entries.

Advantages of LANs: Hardware such as printers can be shared so individual workstations do not need their own printer. When they print, the data is stored in a queue on a server. The data is then passed to the printer.

All the users work can be stored in a central place the dedicated file server so a user can access their work through any computer on the network. Software can be shared , software packages are stored on the server and downloaded to workstations as requested.

Note that a licence still has to be bought for each copy of the software needed. Data can be shared because database files stored in the server are available to users around the network; data from CD-ROMs can also be shared across the network. Central back-up can take place automatically at regular intervals. A user will usually be able to retrieve work that has been deleted by mistake. Messages can be sent to people working at other computers on the network which can save time and paper.

It is possible to set up a local intranet such as that on the KLB school network. The web pages of information can be accessed only over the LAN. The greater the distance, the greater the delay. Network congestion and dropped packets can also introduce performance problems. Some of this can be addressed using WAN optimization , which makes data transmissions more efficient. This is important because WAN links can be expensive, so technologies have sprung up that reduce the amount of traffic crossing WAN links and ensure that it arrives efficiently.

These optimization methods include abbreviating redundant data known as deduplication , compression, and caching putting frequently used data closer to the end user. Traffic can be shaped to give time-sensitive applications such as VoIP a higher priority over other, less urgent traffic such as email, which in turn helps improve the overall WAN performance. This can be formalized into quality-of-service settings that define classes of traffic by the priority each class receives relative to others, the type of WAN connection that each traffic type will travel, and the bandwidth that each receives.

WANs have been around since the early days of computing networks. WANs were based on circuit-switched telephone lines and modems but now connectivity options also include leased lines, wireless, MPLS, broadband internet, and satellite.

As technologies changed, so did transmission rates. The early days of bps modems evolved to 40Gbps and Gbps connectivity today. These speed increases have allowed more devices to connect to networks, enabling the explosion of connected computers, phones, tablets and smaller Internet of Things devices. In addition, speed improvements have allowed applications to utilize larger amounts of bandwidth that can travel across WANs at super-high speed. This has allowed enterprises to implement applications such as videoconferencing and large-file data backup.

Nobody would have considered conducting a videoconference across a 28kbps modem, but now workers can sit at home and participate in global company meetings via video. These are typically used for top-priority or delay-sensitive applications that have high-bandwidth needs such as videoconferencing. Traffic between WAN sites may be protected by virtual private networks VPN that overlay security on the underlying physical network, including authentication, encryption, confidentiality and non-repudiation.

In general, security is a crucial part of any WAN rollout, because a WAN connection represents a potential vulnerability that an attacker could use to gain access to a private network. For instance, a branch office without a full-time infosec staffer might be lax in its cybersecurity practices.

As a result, a hacker who breached the network at the branch could go on to access the main corporate WAN, including valuable assets that would have been otherwise impregnable. In addition to networking features, many SD-WAN offerings provide security services as well, which need to be kept top of mind during deployment. The Disruption Tolerant Networking DTN program is the first step in providing an Internet-like structure for communications between space-based devices, including communicating between the Earth and Moon, or other planets.

But barring any dramatic breakthrous in physics, network speeds would likely top out at the speed of light. Here are the latest Insider stories.

A WAN router, also known as an edge router or border router is a device that routes data packets between WAN locations, giving an enterprise access to a carrier network. It relies on virtualization , application-level policies and overlay networks, and onsite SD-WAN devices and software platforms. What is WAN optimization? Latency and bandwidth constraints often cause performance issues in enterprise WANs.

WAN optimization use a variety of techniques, including deduplication, compression, protocol optimization, traffic shaping, and local caching.

These techniques improve packet delivery and traffic control, in turn allowing network bandwidth to grow or shrink dynamically as needed.

Types of WAN technologies. Packet switching. Overlay network. Frame Relay. What Is a LAN? What Is Virtualization? What Is Network Architecture? What Is Endpoint Analytics?