Backup exec 2010 tape quickest way to recover files

Backup exec 2010 tape quickest way to recover files software#
Backup exec 2010 tape quickest way to recover files professional#

It is very difficult to troubleshoot any type of network connectivity issue without a network diagram that depicts the IP addresses, IP routes, and devices, such as firewalls and switches. More experienced individuals often bypass structured approaches and rely on instinct and experience. The structure of these approaches makes them ideally suited for the novice troubleshooter. For example, the troubleshooter may begin at the Network Layer by verifying IP configuration information. Are cables securely connected? If the equipment has indicator lights, are those lights on or off?Дivide-and-Conquer вЂ“ Typically troubleshooting begins at one of the middle layers and works up or down from there. The Physical Layer is concerned with hardware and wire connections. Is it just one application that is not functioning, or do all applications fail? For example, can the user access various web pages on the Internet, but not email? Do other workstations have similar issues?Д«ottom-up вЂ“ Starts with the Physical Layer and works up. It looks at the problem from the point of view of the user and the application. Top-down вЂ“ Starts with the Application Layer and works down. Using one of these troubleshooting methods, a troubleshooter can verify all functionality at each layer until the problem is located and isolated. There are three main troubleshooting approaches when using network models:Д®ach method assumes a layered concept of networking. Hardware problems and incompatibilities cause most Layer 1 and Layer 2 problems. The Physical Layer is closest to the physical network medium, such as the network cabling, and is responsible for actually placing information on the medium. The Physical Layer (Layer 1) and Data Link Layer (Layer 2) are implemented in both hardware and software. IP addressing and routing errors occur at Layer 3.

Backup exec 2010 tape quickest way to recover files software#

In addition to software errors on end systems, software configuration errors on routers and firewalls account for many problems isolated to these layers. The Network Layer (Layer 3) and the Transport Layer (Layer 4) are generally implemented only in software. The lower layers (1-4) of the OSI model handle data-transport issues. Problems isolated to these layers can frequently be caused by end-system software configuration errors on clients and servers. The upper layers (5-7) of the OSI model deal with specific application functionality and are generally implemented only in software. It is important to understand the functions that occur and the networking devices that operate at each layer of the OSI model.

The OSI reference model provides a common language for network technicians and engineers. OSI Reference Model as a Troubleshooting Tool Before beginning, review the material on the OSI and TCP/IP models in CCNA Discovery: Networking for Home and Small Businesses and CCNA Discovery: Working at a Small-to-Medium Business or ISP. This chapter uses the OSI and TCP/IP models to provide the structure for troubleshooting activities. Knowledge of the features, functions, and devices of each layer, and how each layer relates to the layers around it, help a network technician to troubleshoot more efficiently. Each layer of the OSI or TCP/IP model has specific functions and protocols.

Logical networking models separate network functionality into modular layers. When troubleshooting, many technicians use the OSI and TCP/IP networking models to help isolate the cause of a problem. For this reason, Cisco certification exams measure the ability to identify and correct network problems. Good network troubleshooters are always in high demand.

Backup exec 2010 tape quickest way to recover files professional#

One of the most important abilities for a network professional to develop is the ability to efficiently troubleshoot network problems.