Flashcards in IP Connectivity Q/A's Deck (25)
What does the network prefix identify?
The Network ID/Subnet Mask is used to divide... in what two things?
IP address into networks and host address
Next hop address is the next address that...?
Next address that a router is going to forward data packets to
Administrative distance in routing is use to determine what two things of a route?
distance and trustworthiness
Metrics are calculated with the administrative distance in order to determine what?
best routing decisions
The gateway of last resort is a default route where?
all packets are forwarded to reach other routers.
Routing protocols use what three things to choose the best routing decisions?
What is a floating static route?
backup static route that is used in the event of a failure
What is a default route?
Where all packets forward to by default
First hop redundancy protocol (FHRP) eliminates...?
single points of failure
What two things are used in order for form the first hop redundancy protocol (FHRP) backup active and standby routers over the network?
Virtual IP and MAC Address
What type of messages are sent from the Hot Standby Router (HSRP) to other HSRP routers?
When the state of a standby router stops receiving hello messages, what happens?
router transitions from standby to the active router
When HSRP routers are elected as the active and standby router in what priority order is the election made?
What is the default priority value of HSRP routers?
If the priority of HSRP routers tie, is the highest or lowest IP address used for it's election?
highest and then lowest priority
highest IP address
What must be enabled on a router in order for it to fail-over when using a router redundancy protocol?
What router redundancy protocol is open standard and similar to HSRP?
(VRRP) Virtual Router Redundancy Protocol
What type of router redundancy protocol is used to load balance across multiple routers?
(GLBP) Gateway Load Balancing Protocol
Link state routing protocols are responsible for originating information about...?
the router, its directly connected links, and the state of those links
How do routers elect it's router ID?
highest IP address with longest prefix /#
What is the Customer Edge router?
router facing the ISP
What is the Provider Edge router?
ISP router facing the customer
What is the Provider Core router?
Core internal router of the ISP
MPLS Customer Edge CE routers peer at what layer with the service provider?
MPLS operate using two routers types of routers internal to the ISP?
Provider Core Router
Provider Edge Router