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Lesson 6 Common Connectivity Problems
Objective List Common Problems related to Connectivity Hardware

Common Problems related to Connectivity Hardware

When visiting a site, users may experience a number of problems related to specific hardware factors. The table below lists several possible problems and the hardware that may be responsible for such problems. Question: Whare are common problems related to hardware connectivity when using a client-server architecture?
Client-server architectures rely on hardware connectivity to ensure that clients can access server resources and data. When there are problems with hardware connectivity, it can result in reduced performance, downtime, and data loss. Here are some common problems related to hardware connectivity in a client-server architecture:
  1. Network congestion: If there is too much traffic on the network, it can cause delays and packet loss, resulting in slow or unresponsive servers and reduced performance for clients.
  2. Hardware failure: Hardware failure, such as a failed switch or router, can cause network outages and make it impossible for clients to access server resources and data.
  3. Cable or connector issues: Loose or damaged cables or connectors can cause connectivity issues and result in intermittent or slow connections between clients and servers.
  4. Distance limitations: Depending on the type of hardware used, there may be limitations on the distance between clients and servers. If these limitations are exceeded, it can result in poor connectivity or complete loss of connectivity.
  5. Interference: Interference from other electronic devices or electromagnetic interference can cause disruptions in network connectivity and result in poor performance or complete loss of connectivity.
  6. Bandwidth limitations: If the network bandwidth is not sufficient to handle the traffic and data being transmitted between clients and servers, it can result in slow or unresponsive servers and reduced performance for clients.

In conclusion, hardware connectivity issues can have a significant impact on the performance and reliability of client-server architectures. Common problems related to hardware connectivity include network congestion, hardware failure, cable or connector issues, distance limitations, interference, and bandwidth limitations. To ensure reliable and efficient hardware connectivity, it is important to implement appropriate hardware components and maintenance practices, such as regular hardware checks and updates.

Hardware related problems Potential Cause
User's computer crashes when accessing website Configuration problem with client machine, or browser plug-ins
User cannot connect to network devices Router, NIC or other network HW/SW not configured correctly
Web Pages download slowly 1) Client machine has too little memory, 2) Modem is too slow for anticipated downloads,3) Server is overworked insufficient bandwidth problem, 4) Possibly noisy lines
User receives a browser error message when accessing a site ( Cannot find URL) 1) Web server is offline 2) Site has moved to another URL, 3) Network at server end is down, 4) Firewall is improperly configured, 5) DNS server is down
Only part of a file arrives 1) Network connection between client and server is intermittent or overloaded, 2) Excessive internet traffic at host server
Video reception is slow or uneven 1) Modem or T1 connection is too slow, 2) Web server is busy, 3) ISP router is busy, 4) User's PC hardware is insufficient to run video smoothly
Web pages on intranet appear quickly but custom reports and forms process very slowly 1) Connection between web server and database server is not configured properly and database server has too many requests at that moment, 2) Possible disk problems on the client's PC

In the next lesson, you will learn about security devices and the problems they may cause.

Problems Related To Hardware

Click the Exercise link below to check your knowledge of the possible causes for some common hardware problems.
Problems Related To Hardware

Computer Network Defined

A computer network can be defined as "two or more computers connected by some means through which they are capable of sharing information".
There are many types of networks:
  1. (LANs) local area networks,
  2. (WANs) wide area networks,
  3. (MANs) metropolitan area networks,
  4. campus area networks (CANs), Ethernet networks,
  5. Token Ring networks,
  6. Fiber Distributed Data Interface (FDDI) networks,
  7. Asynchronous Transfer Mode (ATM) networks,
  8. Frame Relay networks,
  9. T1 networks,
  10. DS3 networks,
  11. bridged networks,
  12. routed networks, and
  13. point-to-point networks.
If you can remember the program Laplink, which allowed you to copy files from one computer to another over a special parallel port cable, you can consider that connection a network as well. It was not very scalable (only two computers) or very fast, but it was a means of sending data from one computer to another via a connection.
Connection is an important concept and is what distinguishes a sneaker net, in which information is physically transferred from one computer to another via removable media, from a real network. When you insert a USB drive into a computer, there is no indication that the files came from another computer, since there is no connection. A connection involves a type of addressing or identification of the nodes on the network (even if it is only primary-secondary).
The machines on a network are often connected physically by means of cables. However, wireless networks, which are devoid of obvious physical connections, are connected through the use of radios. Each node on a wireless network has an address. Frames received on the wireless network have a specific source and destination, as with any network.
Networks are often distinguished by their reach. LANs, WANs, MANs, and CANs are all examples of network types defined by their areas of coverage. LANs are local to a single building or floor. WANs cover broader areas, and are usually used to connect LANs. WANs can span the globe. MANs are common in areas where technology like Metropolitan Area Ethernet is possible. They typically connect LANs within a given geographical region such as a city or town. A CAN is similar to a MAN, but is limited to a campus (a campus is usually defined as a group of buildings under the control of one entity, such as a college or a single company).