Administrative Distance (AD)--Index of Believability
Terms
Terms II
Address Translation
Routing Protocols
100
Statically configured networks have an AD of this
What is 1
100
This type of routing protocol sends a full copy of its routing table to its directly attached neighbors; it does its advertisement periodically. The time it takes to converge is a drawback along with the potential of a routing loop.
What is distance-vector
100
This category of QoS mechanisms is often referred to as hard QoS because it can make strict bandwidth reservations. It uses signaling among network devices to provide Bw reservations and has to be configured on every router along a packet's path, which is a main drawback (lack of scalability).
What is Integrated Services (IntServ)
100
This NAT IP name describes a private IP address referencing an outside device
What is Outside global.
100
This routing protocol uses bandwidth and delay in its metric calculation along with other parameters for consideration, such as, MTU size. It is sometimes called an advanced distance-vector or hybrid routing protocol. It uses diffusing updated algorithm (DUAL). It is an IGP (Interior Gateway Protocol, meaning that is operates within an autonomous system).
What is EIGRP (Enhanced Interior Gateway Protocol)
200
EIGRP has an AD of this
What is 90
200
A quality issue of uneven arrival of packets between source and destination router. This variation of arrival times is not dropping packets, but it may be interpreted by the listener as dropped packets.
What is Jitter.
200
This feature in distance-vector routing protocols causes a route received on one interface to be advertised back out of that same interface with a metric considered to be infinite, therefore preventing a routing loop
What is poison reverse.
200
This allows private IP addresses to be translated into Internet-routable IP addresses.
What is NAT (Network Address Translation).
200
A link-state routing protocol that uses a metric of cost, which is based on the link speed between two routers. It is an IGP (Interior Gateway Protocol, meaning it operates within an autonomous system).
What is OSPF (Open Shortest Path First)
300
External EIGRP has an AD of this
What is 170
300
This Layer 3 Redundancy approach for end system not running a routing protocol and points to a default gateway, enables two routers to each act as default gateways, although only one of the routers will act as the default GW at any one time. The "standby" router can take over and start forwarding traffic if the "active" router is unavailable.
What is Hot Standby Router Protocol (HSRP).
300
This type of protocol allows routers to build a topological map of the network vice exchanging full routing tables with its neighbors.
What is link-state routing protocols
300
This approach is used when you want to statically configure the inside global address assigned to a specific device inside your network. An example would be to statically configure the mapping of an inside local address to an inside global address.
What is SNAT (Static NAT)
300
A distance-vector routing protocol that uses a metric of hop count. It is an IGP (Interior Gateway Protocol-means it operates within an autonomous system).
What is RIP (Routing Information Protocol).
400
OSPF has an AD of this
What is 110
400
This QoS mechanism places traffic into different categories such as characteristics - POP3, IMAP, SMTP, etc..
What is Classification
400
This is the most popular multicast routing protocol. Its main purpose is to form a multicast distribution tree, which is the path (or paths) over which multicast traffic flows.
What is PIM
400
The address translation allows multiple inside local addresses to share a single inside global address (a single publicly routable IP address)
What is PAT
400
This link-state protocol uses a configurable, yet dimensionless, metric associated with an interface and runs Dijkstra's shortest path first algorithm.
What is IS-IS (Intermediate System-to-Intermediate System)
500
RIP has an AD of this
What is 120
500
This feature in distance-vector routing protocols prevents a route learned on one interface from being advertised back out of the same interface, therefore, preventing routing loops.
What is split horizon.
500
A protocol used between clients and routers to let routers know which of their interfaces have multicast receivers
What is IGMP
500
These are the Inside local NAT IP address types
What are 10.1.1.1 and 10.1.1.2
500
This protocol can be described as a path-vector routing protocol, it can use as its metric the number of autonomous system hops that must be transited to reach a destination network, as opposed to a number of required hops.
What is BGP
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