Sterling Silver Jewelry has always been popular precious metal in ancient legends and throughout history in every country. While silver is used in lots of products, it’s use as money and sterling silver jewelry are the source of its mystique and intrigue. There are many movie plots based on stealing sterling silver jewelry and seeking lost sterling silver jewelry items with magical qualities. If you love sterling silver jewelry, you probably feel the same way each time you put on your sterling silver jewelry and head for adventure.
Sterling Silver Jewelry – Keep It Clean!
Sterling silver tiffany's jewellery comes in an amazing variety of styles and textures over its 4,000 year history. Ever notice how your sterling silver jewelry sometimes just catches your eye and casts a spell on you? It’s not just your illusion. The hypnotic power of a sterling silver jewelry flows from its highly polished surface that reflects the light in a way like no other jewelry can. Another finish applied to sterling silver jewelry is rhodium that gives it a slightly darker finish. As you know, sterling silver jewelry tarnishes. Keep a soft cloth and silver polish and handy to keep your sterling silver jewelry shining bright.
Sterling Silver tiffany & co – Why is it 92.5% Silver?
The term “sterling silver jewelry” refers to jewelry cast from 92.5% silver. This is because 100 % pure sterling silver jewelry is a little soft and prone to bending and breaking. The 92.5% silver content creates sterling silver jewelry that is both elegant and durable. Reproductions of sterling silver jewelry worn by kings and queens represent a romantic tie between people in love today and ancient history. Browse sterling silver jewelry online for exquisite and extraordinary ancient
tiffany necklace pieces that excites the soul.
Sterling Silver Jewelry– Buying Tips
When buying sterling silver jewelry on the internet, keep in mind most online stores are honest and care about your satisfaction. Most offer thirty day warranty on your sterling silver tiffany's jewellery and will exchange it. Like many purchases, it pays to pay by credit card for your protection.
2008年10月31日星期五
2008年10月27日星期一
Cisco's 640-802 Cisco Certified Network Associate
Cisco's 640-802 Cisco Certified Network Associate (CCNA) is the composite exam associated with the Cisco Certified Network Associate certification Skills required for Cisco exam 640-802..
Cisco has specified over seventy-five objectives for the 640-802 exam to test a candidate's knowledge and skills required to successfully install, operate, and troubleshoot a small to medium size enterprise branch network. The topics include connecting to a WAN; implementing network security; network types; network media; routing and switching fundamentals; the TCP/IP and OSI models; IP addressing; WAN technologies; operating and configuring IOS devices; extending switched networks with VLANs; determining IP routes; managing IP traffic with access lists; establishing point-to-point connections; and establishing Frame Relay connections 920-221.
Following are some important areas in which a candidate should possess good knowledge before taking the 640-802 exam:
1. Purpose and functions of various network devices.
2. Components required to meet a given network specification.
3. OSI and TCP/IP models and their associated protocols to explain how data flows in a network.
4. Common networking applications including Web applications.
5. Interpreting network diagrams.
6. Determining the path between two hosts across a network.
7. Identifying and correcting common network problems at layers 1, 2, 3, and 7 using a layered model approach.
8. Selecting the appropriate media, cables, ports, and connectors to connect switches/routers to other network devices and hosts 650-621.
9. The technology and media access control method for Ethernet technologies.
10. Network segmentation and basic traffic management concepts.
11. The operation of Cisco switches and basic switching concepts.
12. Remote access management.
13. Verifying network status and switch operation using basic utilities (including ping, traceroute, telnet, SSH, arp, ipconfig), SHOW and DEBUG commands.
14. The basic uses and operation of NAT in a small network connecting to one ISP.
15. Identifying and correcting IP addressing issues.
16. Basic routing concepts.
17. The operation of Cisco routers.
18. Accessing and utilizing the router CLI to set basic parameters.
19. The basic parameters to configure on a wireless network.
20. The functions of common security appliances and applications.
21. Configuring, verifying, and troubleshooting VLANs and trunking on Cisco switches.
22. Configuring, verifying, and troubleshooting VTP, interVLAN routing, and RSTP operation.
23. Interpreting the output of various show and debug commands for verifying the operational status of a Cisco switched network.
24. Implementing basic switch security including port security, unassigned ports, trunk access, etc.
25. Calculating and applying a VLSM IP addressing design to a network.
26. Determining the appropriate classless addressing scheme using VLSM and summarization to satisfy addressing requirements in a LAN/WAN environment.
27. Describing the IPv6 addressing and technological requirements for running IPv6.
28. Identifying and correcting common problems associated with IP addressing and host configurations.
29. Comparing and contrasting methods of routing and routing protocols.
30. Configure, verify and troubleshoot OSPF and EIGRP.
31. Verifying configuration and connectivity using ping, traceroute, and telnet or SSH.
32. Troubleshooting routing implementation issues and implementing basic router security.
33. Verifying router hardware and software operation using SHOW and DEBUG commands.
34. Describing, configuring, and applying access control lists.
35. Troubleshooting ACL implementation issues and verifying and monitoring ACL's in a network environment.
36. Explaining, troubleshooting, and configuring NAT for given network requirements using Command-line interface (CLI).
37. Configuring and verifying Frame Relay on Cisco routers.
38. Troubleshooting WAN implementation issues.
39. Describing VPN technology including importance, benefits, role, impact, and components.
40. Configuring and verifying PPP connection between Cisco routers.
Cisco has specified over seventy-five objectives for the 640-802 exam to test a candidate's knowledge and skills required to successfully install, operate, and troubleshoot a small to medium size enterprise branch network. The topics include connecting to a WAN; implementing network security; network types; network media; routing and switching fundamentals; the TCP/IP and OSI models; IP addressing; WAN technologies; operating and configuring IOS devices; extending switched networks with VLANs; determining IP routes; managing IP traffic with access lists; establishing point-to-point connections; and establishing Frame Relay connections 920-221.
Following are some important areas in which a candidate should possess good knowledge before taking the 640-802 exam:
1. Purpose and functions of various network devices.
2. Components required to meet a given network specification.
3. OSI and TCP/IP models and their associated protocols to explain how data flows in a network.
4. Common networking applications including Web applications.
5. Interpreting network diagrams.
6. Determining the path between two hosts across a network.
7. Identifying and correcting common network problems at layers 1, 2, 3, and 7 using a layered model approach.
8. Selecting the appropriate media, cables, ports, and connectors to connect switches/routers to other network devices and hosts 650-621.
9. The technology and media access control method for Ethernet technologies.
10. Network segmentation and basic traffic management concepts.
11. The operation of Cisco switches and basic switching concepts.
12. Remote access management.
13. Verifying network status and switch operation using basic utilities (including ping, traceroute, telnet, SSH, arp, ipconfig), SHOW and DEBUG commands.
14. The basic uses and operation of NAT in a small network connecting to one ISP.
15. Identifying and correcting IP addressing issues.
16. Basic routing concepts.
17. The operation of Cisco routers.
18. Accessing and utilizing the router CLI to set basic parameters.
19. The basic parameters to configure on a wireless network.
20. The functions of common security appliances and applications.
21. Configuring, verifying, and troubleshooting VLANs and trunking on Cisco switches.
22. Configuring, verifying, and troubleshooting VTP, interVLAN routing, and RSTP operation.
23. Interpreting the output of various show and debug commands for verifying the operational status of a Cisco switched network.
24. Implementing basic switch security including port security, unassigned ports, trunk access, etc.
25. Calculating and applying a VLSM IP addressing design to a network.
26. Determining the appropriate classless addressing scheme using VLSM and summarization to satisfy addressing requirements in a LAN/WAN environment.
27. Describing the IPv6 addressing and technological requirements for running IPv6.
28. Identifying and correcting common problems associated with IP addressing and host configurations.
29. Comparing and contrasting methods of routing and routing protocols.
30. Configure, verify and troubleshoot OSPF and EIGRP.
31. Verifying configuration and connectivity using ping, traceroute, and telnet or SSH.
32. Troubleshooting routing implementation issues and implementing basic router security.
33. Verifying router hardware and software operation using SHOW and DEBUG commands.
34. Describing, configuring, and applying access control lists.
35. Troubleshooting ACL implementation issues and verifying and monitoring ACL's in a network environment.
36. Explaining, troubleshooting, and configuring NAT for given network requirements using Command-line interface (CLI).
37. Configuring and verifying Frame Relay on Cisco routers.
38. Troubleshooting WAN implementation issues.
39. Describing VPN technology including importance, benefits, role, impact, and components.
40. Configuring and verifying PPP connection between Cisco routers.
2008年10月3日星期五
Tips on Buying a New Pair of Reading Glasses
When you're learning about something new, it's easy to feel overwhelmed by the sheer amount of relevant information available. This informative article should help you focus on the central points.
discount eyeglassesprescription eyeglassesthe more chances you will find the perfect set of reading eyewear. tiffany and co sale
Once you have an idea of what kind of styles you like, then you must go see an eye doctor and figure out what type of prescription lens you need inside your fashionable frames. Some of you may be near sighted, others may be far sighted, some might have a stigmatism and others maybe just a lazy eye, what ever the case may be, you absolutely have to get a doctor to look at your eyes. In rare cases you might only need to magnify the words, in this case you don necessarily need prescriptions but it would still be a good idea to double check to make sure that is indeed the case. eyeglasses online
If you've picked some pointers about reading glasses that you can put into action, then by all means, do so. You won't really be able to gain any benefits from your new knowledge if you don't use it.Tiffany Necklaces
discount eyeglassesprescription eyeglassesthe more chances you will find the perfect set of reading eyewear. tiffany and co sale
Once you have an idea of what kind of styles you like, then you must go see an eye doctor and figure out what type of prescription lens you need inside your fashionable frames. Some of you may be near sighted, others may be far sighted, some might have a stigmatism and others maybe just a lazy eye, what ever the case may be, you absolutely have to get a doctor to look at your eyes. In rare cases you might only need to magnify the words, in this case you don necessarily need prescriptions but it would still be a good idea to double check to make sure that is indeed the case. eyeglasses online
If you've picked some pointers about reading glasses that you can put into action, then by all means, do so. You won't really be able to gain any benefits from your new knowledge if you don't use it.Tiffany Necklaces
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