1. Earlier the Cisco certification exams fee for professional, specialist and some other technical exams like 300 - xyz, 500 – xyz, 600 – xyz, 640 – 864 (CCDA) , 642 – xyz, 644 – xyz, 648 - xyz series was 200 USD(Per Module/Exam) which now has  been changed and revised to 250 USD for each of the above written exam series. 2. Fee for CCIE written exam of 350 – xyz and 400 – xyz se... (more)

The purpose of the auxiliary port is for connecting to an external modem. Once configured, this modem can be used as a backup demand-dial connection to another location, or as a way to dial in to the router for troubleshooting purposes should regular connectivity fail.

A DSL modem uses telephone lines for high-speed Internet connections.When you connect to the Internet, you might connect through a regular modem, through a local-area network connection in your office, through a cable modem or through a digital subscriber line (DSL) connection.

A neighbor that is discovered dynamically through reception of HELLO packets can fall back to a down state if it is being deleted, for example when OSPF does not receive HELLO packets from the neighbor for period of time longer than the Dead timer interval.