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NEW QUESTION: 1
Scenario: An engineer has configured a virtual server that users access using HTTP port 80. The web application also uses TCP port 81 and 8080 for non-user access. The engineer would like to prevent users from connecting to web servers if any of the ports go down. How should the engineer set this configuration to ensure service availability?
A. Lower the server timeout value.
B. Create monitors for ports 81 and 8080, and bind to the service or service group.
C. Create additional virtual servers for ports 81 and 8080.
D. Increase the monitor threshold.
Answer: B
NEW QUESTION: 2
Which three functions require a Services Router (SR) component on an Edge node? (Choose three.)
A. Distributed Firewall
B. Virtual Private Network
C. Gateway Firewall
D. Service Insertion
E. Packet Forwarding
F. Distributed Routing
Answer: B,C,D
NEW QUESTION: 3
Which two options are new features that are supported by IGMPv3compared to IGMPv2.(Choose two)
A. It adds support for source filtering.
B. Router can now send a group-specific query.
C. It extends IGMP. which allows for an explicit maximum response time field.
D. It adds support for IGMP Leave Message.
E. It supports the link local address 224.0.0.22. which is the destination IP address for membership reports.
Answer: A,E
Explanation:
Explanation
Do not understanding difference between IGMPv2 and v3 | LAN, Switching and Routing | Cisco Support Community
https://supportforums.cisco.com/discussion/10948466/do-not-understanding-difference-between-igmpv2-and-v3 IGMP Version 3 Cisco
http://www.cisco.com/c/en/us/td/docs/ios/12_0s/fe
Feature Overview
Internet Group Management Protocol (IGMP) is a protocol used by IPv4 systems to report IP multicast memberships to neighboring multicast routers.
This feature module introduces support for Version 3 of IGMP. In previous versions of Cisco IOS software only Version 1 and Version 2 were supported. IGMP Version 3 (IGMPv3) adds support for "source filtering," which enables a multicast receiver host to signal to a router which groups it wants to receive multicast traffic from, and from which source(s) this traffic is expected. This membership information enables Cisco IOS software to forward traffic only from those sources from which receivers requested the traffic.
IGMPv3 supports applications that explicitly signal sources from which they want to receive traffic. With IGMPv3, receivers signal membership to a multicast host group in the following two modes:
INCLUDE mode-In this mode, the receiver announces membership to a host group and provides a list of IP addresses (the INCLUDE list) from which it wants to receive traffic. EXCLUDE mode-In this mode, the receiver announces membership to a host group and provides a list of IP addresses (the EXCLUDE list) from which it does not want to receive traffic. This indicates that the host wants to receive traffic only from other sources whose IP addresses are not listed in the EXCLUDE list. To receive traffic from all sources, like in the case of the Internet Standard Multicast (ISM) service model, a host expresses EXCLUDE mode membership with an empty EXCLUDE list.
IGMPv3 is the industry-designated standard protocol for hosts to signal channel subscriptions in Source Specific Multicast (SSM). SSM was introduced in Cisco IOS Release 12.1(3)1, however SSM support for IGMPv3 was introduced in 12.1(5)T. For SSM to rely on IGMPv3; IGMPv3 must be available in last hop routers and host operating system network stacks, and be used by the applications running on those hosts.
In SSM deployment cases where IGMPv3 cannot be used because it is not supported by the receiver host or the receiver applications, there are two Cisco-developed transition solutions that enable the immediate deployment of SSM services: URL Rendezvous Directory (URD) and IGMP Version 3 lite (IGMP v3lite). Both of these features are documented in the Cisco IOS Release
12.0(15)S Source Specific Multicast with IGMPv3, IGMP vSlite, and URD feature module.
IGMP
Version
Description
IGMPvl
Provides the basic query-response mechanism that allows the multicast
router to determine which multicast groups are active and other processes that enable hosts to join and leave a multicast group. RFC 1112 defines the IGMPvl host extensions for IP multicasting.
IGMPv2
Extends IGMP. allowing such capabilities as the IGMP leave process, group-specific queries, and an explicit maximum response time field. IGMPv2 also adds the capability for routers to elect the IGMP querier without dependence on the multicast protocol to perform this task. RFC 2236 defines IGMPv2.
IGMPv3
Provides for source filtering. which enables a multicast receiver host to signal to a router which groups it wants to receive multicast traffic from, and from which sources this traffic is expected. In addition, IGMPv3 supports the link local address 224.0.0.22. which is the destination IP address for IGMPv3 membership reports; all IGMPv3-capable multicast routers must listen to this address. RFC 3376 defines IGMPv3.