Create The Perfect Web Experience With Load Testing

Using web server load testing software like Webserver Stress Tool is important for any web infrastructure. Load testing during development and deployment ensures that potential problems in your website can be dealt with before they bring down your web resources. Webserver Stress Tool ensures that you are getting everything out of the investment in your webserver technology through in-depth testing and analysis. Learn more.

Create The Perfect Web Experience With Load Testing

Using web server load testing software like Webserver Stress Tool is important for any web infrastructure. Load testing during development and deployment ensures that potential problems in your website can be dealt with before they bring down your web resources. Webserver Stress Tool ensures that you are getting everything out of the investment in your webserver technology through in-depth testing and analysis. Learn more.

Optimize Your Network Bandwidth With Network Monitoring

With PRTG you will have access to bandwidth and network usage data that will help improve the performance and efficiency of your network. Understanding bandwidth and resource consumption is the key to better network performance management. You can avoid bandwidth and server performance bottlenecks, plan upgrades of your infrastructure strategically, and deliver improved quality of service to your users. Learn more about bandwith monitoring.

Electronic Network Solutions

Our network solutions for onboard electronics replace conventional electrics and bulky fixed wiring harnesses in vehicles. Featuring flexible multiplex architecture, our smart, state of the art networks offer high performance and reliable diagnostics. Drivers can access all relevant information at any time via a direct interface. Standard data buses enable easy connection of a variety of components.

Significantly reduce system costs

Our multiplexing onboard electronics system radically reduces the number of cables, connections, plugs, relays and fuses installed in a vehicle. This makes a major contribution to enhanced vehicle reliability and helps lower the cost of wiring activities, plus the time spent on quality checks, documentation and servicing. Alongside these savings, the costs associated with procurement, inventory and admin can also be trimmed.

Computer N network

ChoiceOne computer and network consulting specializes in installation, administration, service and support of computer and network solutions to small and medium sized businesses. Serving the tri-state since 1997, ChoiceOne is committed to: network administration cost reduction, focused product knowledge and professional quality solutions.

Since its inception, ChoiceOne's ultimate goal is to increase the stability of your computer network using our network management formula. Through analysis, evaluation, configuration techniques and documentation we hope to reduce your support overhead requirements. Its is our hope and desire that through using ChoiceOne over the course of the year a reduction in billable hours will be the natural result. This has been the case with EVERY previous client utilizing our services.

Services available from ChoiceOne computer and networking consulting, Inc. are (but are not limited to).
1. Netware and Windows Server and Desktop Installation and support
2. Database Setup, Installation and Support
3. Networking Support
4. Hardware/Software Support
5. Internet/Intranet Security
6. Disaster Recovery
7. Internet Consultation, Installation and Support
8. E-mail System Design and Installation
9. Documentation
10.Network Design
11.Internet Firewall
12.Network Operating Fault Isolation
13.System Administration
14.Training
15.Computer Network Cabling
16.Office Phone Systems.

Quality Network Solutions

San Francisco Computer Repair's staff of support specialists, on-site field engineers, and certified consultants are highly skilled professionals. Each will give you the support needed to successfully maintain your mission-critical network. Your call will be answered directly by your assigned support specialist or call coordinator. Your assigned support specialist will direct your support issues from beginning through to the best resolution. San Francisco Computer Repair's established call-tracking system allows our service manager to follow the progress of your call to its decisive resolution. Every step of every calls have a built-in time frame for completion of the task, which helps them ensure that your needs are quickly accomplished. Web Sites, Domain Names, and Hosting - We do it all. Network solutions for today's information technology.

Network Topology Diagrams

What is Network Topology

The physical topology of a network refers to the configuration of cables, computers, and other peripherals. Physical topology should not be confused with logical topology which is the method used to pass information between workstations. Logical topology was discussed in the Protocol chapter.
Main Types of Network Topologies In networking, the term "topology" refers to the layout of connected devices on a network. This article introduces the standard topologies of computer networking.
One can think of a topology as a network's virtual shape or structure. This shape does not necessarily correspond to the actual physical layout of the devices on the network. For example, the computers on a home LAN may be arranged in a circle in a family room, but it would be highly unlikely to find an actual ring topology there.
Network topologies are categorized into the following basic types:
Star Topology
Ring Topology
Bus Topology
Tree Topology
Mesh Topology
Hybrid TopologyMore complex networks can be built as hybrids of two or more of the above basic topologies.
Star Topology Many home networks use the star topology. A star network features a central connection point called a "hub" that may be a hub, switch or router. Devices typically connect to the hub with Unshielded Twisted Pair (UTP) Ethernet.
Compared to the bus topology, a star network generally requires more cable, but a failure in any star network cable will only take down one computer's network access and not the entire LAN. (If the hub fails, however, the entire network also fails.)
See the illustration of Star Network Topology.

Advantages of a Star Topology

Advantages of a Star Topology
Easy to install and wire.
No disruptions to the network then connecting or removing devices.
Easy to detect faults and to remove parts.
Disadvantages of a Star Topology
Requires more cable length than a linear topology.
If the hub or concentrator fails, nodes attached are disabled.
More expensive than linear bus topologies because of the cost of the concentrators.
The protocols used with star configurations are usually Ethernet or LocalTalk. Token Ring uses a similar topology, called the star-wired ring.
Star-Wired Ring
A star-wired ring topology may appear (externally) to be the same as a star topology. Internally, the MAU of a star-wired ring contains wiring that allows information to pass from one device to another in a circle or ring (See fig. 3). The Token Ring protocol uses a star-wired ring topology.
Ring Topology In a ring network, every device has exactly two neighbors for communication purposes. All messages travel through a ring in the same direction (either "clockwise" or "counterclockwise"). A failure in any cable or device breaks the loop and can take down the entire network.
To implement a ring network, one typically uses FDDI, SONET, or Token Ring technology. Ring topologies are found in some office buildings or school campuses.

BUS NETWORK

Bus networks (not to be confused with the system bus of a computer) use a common backbone to connect all devices. A single cable, the backbone functions as a shared communication medium that devices attach or tap into with an interface connector. A device wanting to communicate with another device on the network sends a broadcast message onto the wire that all other devices see, but only the intended recipient actually accepts and processes the message.
Ethernet bus topologies are relatively easy to install and don't require much cabling compared to the alternatives. 10Base-2 ("ThinNet") and 10Base-5 ("ThickNet") both were popular Ethernet cabling options many years ago for bus topologies. However, bus networks work best with a limited number of devices. If more than a few dozen computers are added to a network bus, performance problems will likely result. In addition, if the backbone cable fails, the entire network effectively becomes unusable.

Advantages of a Linear Bus Topology
Easy to connect a computer or peripheral to a linear bus.
Requires less cable length than a star topology.
Disadvantages of a Linear Bus Topology
Entire network shuts down if there is a break in the main cable.
Terminators are required at both ends of the backbone cable.
Difficult to identify the problem if the entire network shuts down.
Not meant to be used as a stand-alone solution in a large building.