HOW TO
SUCCEED IN CCNA EXAM
|
|
|
In order
to become a successful network administrator you should pass the exams such as
CCNA.
CCNA
stands for Cisco certified network associate.
In order to
be successful in the CCNA 640-802 Exam, you must understand router
configuration in networking.
ROUTING
TABLE
·
A
routing table is a database
object that holds the router's routing information.
·
It
represents logical destination network that is available to the router.
·
The
entries for major networks are
listed in ascending order.
·
The
sub networks are listed in descending order.
·
If
the routing table points to an IP address,
the router will perform a lookup on that address until the router finds an
interface to use.
·
The
router will switch the packet to the outbound interface. The router
will then determine the Layer 2 address that maps to the Layer 3 address.
·
The
packet will then be encapsulated in a Layer 2 frame appropriate for the type of
encapsulation used by the outbound interface.
·
The
outbound interface will then place the packet on the medium and forward it to
the next point.
·
The
packet will continue this process until it reaches its destination.
·
There
are two ways in which a routing table can be populated. One is static routing
and the other is dynamic routing.