多选题Which two statements are true about Unicast Reverse Path Forwarding Loose Mode？（）AIt is used in multihome network scenarios.BIt can be used with BGP to mitigate DoS and DDoS.CIt does not need to have CEF enabled.DIt is enabled via the interface level c

It can be configured to block Java traffic.

It can be configured to detect and prevent SYN-flooding denial-of-service （DoS） network attacks.

It can only examine network layer and transport layer information.

It can only examine transport layer and application layer information.

The inspection rules can be used to set timeout values for specified protocols.

The ip inspect cbac-name command must be configured in global configuration mode.

When summarization is configured, the router will also create a route to null 0.

The summary route remains in the route table, even if there are no more specific routes to the network.

Summarization is configured on a per- interface level.

The maximum metric for the specific routes is used as the metric for the summary route.

Automatic summarization across major network boundaries  is enabled by default.

The bgp deterministic-med command is used to influence the BGP route selection process to cause the MED attribute to have higher precedence over the AS path length

The bgp always-compare command is used to influence the BGP route selection process to cause the MED attribute to have higher precedence over the AS path system

Enabling the bgp deterministic-med command ensures the comparison of the MED variable when choosing routes advertised by different peers in the same autonomous system.

Enabling the bgp always-compare-med command ensures the comparison of the MED variable for paths from neighbors in different autonomous systems.

The bgp deterministic-med and bgp always-compare-med commands are enabled by defult.

It is a function used by routing protocols to install routes into routing table

It is a function that prevents the advertising of routes over an interface that the router is usingto reach a route

Its function is to help avoid routing loops.

It is a redistribution technique used by routing protocols

It is the address used by default as the local address for broadcast and multicast packets sourced locally and sent out of the interface

You use the primary address when you have multiple IP addresses belonging to the same subnet on the same inteface

It can be useful for selecting the local address used for packets sent out of unnumbered interfaces when multiple non-127 addresses are configured on the loopback interface

By default, the primary address on an interface is selected as the nmerically highest local address configured on the interface

Sparse mode multicast uses a pull model to send multicast traffic to where it is requested

Dense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted traffic

Dense mode multicast requires explicit join messa ges from their members

Sparse mode uses reverse path forwarding (RPF) to prune off redundant flows

The primary use of sparse mode multicast is for test labs and router performance testing

Clusters are used in confederation schemes to avoid loops.

BGP network can have a confederation within a route reflector area.

An internal BGP network cannot have a route reflector within a confederation.

An internal BGP network can have a route reflector within a confederation.

Clusters are used in route reflector schemes to avoid loops.

BGP network cannot have a confederation within a route reflector area.

It performs switching decisions and forwarding for the VEM

It can be run on a virtual machine

It can be used for remote VEM switching Iine cards

It can be used to join a maximum of three tables

It can be used to restrict the number of columns used in a NATURAL join

It can be used to access data from tables through equijoins as well as nonequijoins

It can be used to join tables that have columns with the same name and compatible data types

It is applied only on the input interface of a router.

It is applied only on the output interface of a router.

It can be configured either on the input or output interface of a router.

It cannot be configured on a router interface.

It is configured under any routing protocol process.

The path cost can be changed for an interface using the spanning-tree cost command

The path cost can be changed for an interface using the stp path-cost command

The SPT default path cost depends on the interface speed

The STP default path cost is similar for all interface

Cisco Express Forwarding （CEF） must be enabled as a prerequisite to running MPLS on a Cisco router.

Frame-mode MPLS inserts a 32-bit label between the Layer 3 and Layer 4 headers.

MPLS is designed for use with frame-based Layer 2 encapsulation protocols such as Frame Relay， but is not supported by ATM because of ATM fixed-length cells.

OSPF， EIGRP， IS-IS， RIP， and BGP can be used in the control plane.

The control plane is responsible for forwarding packets.

The two major components of MPLS include the control plane and the data plane.

Both USING and ON clauses can be used for equijoins and nonequijoins

Amaximum of one pair of columns can be joined between two tables using the ON clause

The ON clause can be used to join tables on columns that have different names but compatible data types

The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause

It is the address used by default as the local address for broadcast and multicast packets sourced locally and sent out of the interface.

You use the primary address when you have multiple IP addresses belonging to the same subnet on the same interface.

It can be useful for selecting the local address used for packets sent out of unnumbered interfaces when multiple non-127 addresses are configured on the loopback interface.

By default, the primary address on an interface is selected as the numerically highest local address configured on the interface.

The forwarding table lists each source protocol and preference for each destination

The forwarding table constains only active routes

The forwarding table is used to process transit packets

The forwarding table is stored in compact flash

Express mode

Strict mode

Loose mode

Tunnel mode

Safe mode