ENCOR-INFRASTRUCTURE – IP SERVICE

Welcome to your ENCOR-INFRAESTRUCTURE- IP SERVICE

What is a potential disadvantage when implementing HSRP as compared to GLBP?

A. HSRP does not provide load balancing with multiple active routers.

B. HSRP does not function in a multivendor environment.

C. HSRP does not have the capability to support IPv6 addresses.

D. HSRP provides default gateway failover only when the active router fails.

None

What are three advantages of using private IP addresses and NAT? (Choose three.)

A. creates multiple public IP addresses

B. reduces CPU usage on customer routers

C. hides private LAN addressing from outside devices that are connected to the Internet

D. improves the performance of the router that is connected to the Internet

E. conserves registered public IP addresses

F. permits LAN expansion without additional public IP addresses

A network engineer wants to synchronize the time of a router with an NTP server at the IPv4 address 209.165.200.225. The exit interface of the router is configured with an IPv4 address of 192.168.212.11. Which global configuration command should be used to configure the NTP server as the time source for this router?

A. ntp peer 209.165.200.225

B. ntp peer 192.168.212.11

C. ntp server 192.168.212.11

D. ntp server 209.165.200.225

None

Which router command is required to configure VRRP to support IPv6?

A. standby 1 ipv6 FE80::1:1

B. fhrp version vrrp v3

C. standby 6 ipv6 autoconfig

D. vrrp 22 address-family ipv6

None

A networking engineer is configuring an NTP client to have access to multiple NTP servers but wants one server to have priority over the others. Which command will achieve this?

A. ntp server 2001:DB8:0:0:800:200C:417A version 4h

B. ntp max-associations 1

C. ntp server 203.0.113.1 prefer

D. ntp master 1

None

What is a feature or purpose of NTP peers?

 NTP peers are NTP clients that share a common NTP server.

 An NTP client that loses connection with an NTP server can synchronize the time with an NTP peer.

 NTP peers query each other to synchronize their clocks.

 An NTP peer that loses connection with another NTP peer loses all NTP synchronization.

None

Which two NTP details are displayed by issuing the show ntp associations command on a switch configured to use NTP? (Choose two.)

A. reference time

B. NTP server IP address

C. reference clock IP address

D. “Clock is synchronized” statement

E. NTP uptime

None

While configuring an IOS router for HSRP with a virtual IP of 10.1.1.1, an engineer sees this log message. Jan 1 12:12:12.111 : %HSRP-4-DIFFVIP1: GigabitEthernet0/0 Grp 1 active routers virtual IP address 10.1.1.1 is different to the locally configured address 10.1.1.25 Which configuration change must the engineer make?

A. Change the HSRP group configuration on the remote router to 1.

B. Change the HSRP group configuration on the local router to 1.

C. Change the HSRP virtual address on the remote router to 10.1.1.1.

D. Change the HSRP virtual address on the local router to 10.1.1.1.

None

Refer to the exhibit. Router 1 is currently operating as the HSRP primary with a priority of 110 router1 fails and router2 take over the forwarding role. Which command on router1 causes it to take over the forwarding role when it return to service?

A. standby 2 priority

B. standby 2 timers

C. standby 2 track

D. standby 2 preempt

None

10.

Which measure is used by an NTP server to indicate its closeness to the authoritative time source?

A. time zone

B. hop count

C. stratum

D. latency

None

11.

Which encryption hashing algorithm does NTP use for authentication?

A. SSL

B. MD5

C. AES128

D. AES256

None

12.

A customer requests a network design that supports these requirements: 1. FHRP redundancy 2. multivendor router environment 3. IPv4 and IPv6 hosts Which protocol does the design include?

A. GLBP

B. VRRP version 2

C. VRRP version 3

D. HSRP version 2

None

13.

A network administrator has designed a network with two multilayer switches on the distribution layer, which act as default gateways for the end hosts. Which two technologies allow every end host in a VLAN to use both gateways? (Choose two)

A. GLBP

B. HSRP

C. MHSRP

D. VSS

E. VRRP

None

14.

How are the different versions of IGMP compatible?

A. IGMPv2 is compatible only with IGMPv1.

B. IGMPv2 is compatible only with IGMPv2.

C. IGMPv3 is compatible only with IGMPv3.

D. IGMPv3 is compatible only with IGMPv1.

None

15.

An engineer configures HSRP group 37. The configuration does not modify the default virtual MAC address. Which virtual MAC address does the group use?

A. C0.00:00:25:00:00

B. 00:00:0c:07:ac:37

C. C0:39:83:25:258:5

D. 00:00:0c:07:ac:25

None

16.

Which two mechanisms are available to secure NTP? (Choose two.)

A. IP prefix list-based

B. IPsec

C. TACACS-based authentication

D. IP access list-based

E. Encrypted authentication

17.

How is MSDP used to interconnect multiple PIM-SM domains?

A. MSDP depends on BGP or multiprotocol BGP for interdomain operation.

B. MSDP SA request messages are used to request a list of active sources for a specific group.

C. MSDP allows a rendezvous point to dynamically discover active sources outside of its domain.

D. MSDP messages are used to advertise active sources in a domain.

None

18.

Refer to the Exhibit. An engineer is installing a new pair of routers in a redundant configuration. When checking on the standby status of each router the engineer notices that the routers are not functioning as expected. Which action will resolve the configuration error?

A. configure matching hold and delay timers

B. configure matching key-strings

C. configure matching priority values

D. configure unique virtual IP addresses

None

19.

By default, which virtual MAC address does HSRP group 16 use?

A. c0:41:99:98:06:16

B. 00:00:0c:07:ac:16

C. 00:00:0c:07:ac:22

D. c0:07:0c:ac:00:22

None

20.

Refer to the exhibit. On which interfaces should VRRP commands be applied to provide first hop redundancy to PC-01 and PC-02?

A. G0/0 and G0/1 on Core

B. G0/0 on Edge-01 and G0/0 on Edge-02

C. G0/1 on Edge-01 and G0/1 on Edge-02

D. G0/0 and G0/1 on ASW-01

None

21.

What NTP Stratum level is a server that is connected directly to an authoritative time source?

A. Stratum 0

B. Stratum 1

C. Stratum 14

D. Stratum 15

None

22.

Refer to the exhibit. An engineer configures VRRP and issues to show commands to verify operation. What does the engineer confirm about VRRP group 1 from the output?

A. Communication between VRRP members is encrypted using MD5

B. If R1 reboot, R2 becomes the master virtual router until R2 reboots

C. There is no route to 10.10.1.1/32 in R2's routing table

D. R1 is master if 10.10.1.1/32 is in its routing table

None

23.

Refer to the exhibit. An engineer must configure static NAT on R1 lo allow users HTTP access to the web server on TCP port 80. The web server must be reachable through ISP 1 and ISP 2. Which command set should be applied to R1 to fulfill these requirements?

A. ip nat inside source static tcp 10.1.1.100 80 209.165.200.225 80 extendable ip nat inside source static tcp 10.1.1.100 80 209.165.201.1 80 extendable

B. ip nat inside source static tcp 10.1.1.100 80 209.165.200.225 80 ip nat inside source static tcp 10.1.1.100 80 209.165.201.1 80

C. ip nat inside source static tcp 10.1.1.100 80 209.165.200.225 80 ip nat inside source static tcp 10.1.1.100 8080 209.165.201.1 8080

D. ip nat inside source static tcp 10.1.1.100 80 209.165.200.225 80 no-alias ip nat inside source static tcp 10.1.1.100 80 209.165.201.1 80 no-alias

None

24.

Which statement about multicast RPs is true?

A. RPs are required only when using protocol independent multicast dense mode.

B. RPs are required for protocol independent multicast sparse mode and dense mode.

C. By default, the RP is needed periodically to maintain sessions with sources and receivers

D. By default, the RP is needed only to start new sessions with sources and receivers.

None

25.

Refer to the exhibit. An engineer is installing a new pair of routers in a redundant configuration. Which protocol ensures that traffic is not disrupted in the event of a hardware failure?

A. HSRPv1

B. GLBP

C. VRRP

D. HSRPv2

None

26.

Refer to the exhibit. Which two facts does the device output confirm? (Choose two)

A. The device is using the default HSRP hello timer

B. The standby device is configured with the default HSRP priority

C. The device's HSRP group uses the virtual IP address 10.0.3.242.

D. The device is configured with the default HSRP priority

E. The device sends unicast messages to its peers

27.

Refer to the exhibit. After configuring HSRP an engineer enters the show standby command. Which two facts are derived from the output? (Choose two.)

A. The router with IP 10.10 1.3 is active because it has a higher IP address

B. If Fa0/0 is shut down, the HSRP pnonty on R2 becomes 80

C. R2 Fa1/0 regains the primary role when the link comes back up

D. R2 becomes the active router after the hold time expires.

E. R2 is using the default HSRP hello and hold timers.

28.

A customer requests a design that includes GLBP as the FHRP The network architect discovers that the members of the GLBP group have different throughput capabilities. Which GLBP load balancing method supports this environment?

A. host dependent

B. least connection

C. round robin

D. weighted

None

29.

What is the role of the RP in PIM sparse mode?

A. The RP responds to the PIM join messes with the source of requested multicast group.

B. The RP maintains default aging timeouts for all multicast streams requested by the receivers.

C. The RP acts as a control-plane node and does not receive or forward multicast packets.

D. The RP is the multicast that is the root of the PIM-SM shared multicast distribution tree.

None

30.

By default, which virtual MAC address does HSRP group 14 use?

A. 04.16.19.09.4c.0e

B. 00:05:5e:19:0c:14

C. 00:05:0c:07:ac:14

D. 00:00:0c:07:ac:0e

None

31.

By default, which virtual MAC address does HSRP group 32 use?

A. 00:5e:0c:07:ac:20

B. 04:18:20:83:2e:32

C. 05:5e:5c:ac:0c:32

D. 00:00:0c:07:ac:20

None

32.

Reter to the exhibit. An administrator troubleshoots intermittent connectivity from internal hosts to an external public server. Some internal hosts can connect to the server while others receive an ICMP Host Unreachable message and these hosts change over time. What is the cause of this issue?

A. The translator does not use address overloading.

B. The NAT ACL does not match alt internal hosts.

C. The NAT ACL and NAT pool share the same name.

D. The NAT pool netmask rs excessively wide

None

33.

What is the purpose of an RP in PIM?

A. send join messages toward a multicast source SPT.

B. ensure the shortest path from the multicast source to the receiver.

C. receive IGMP joins from multicast receivers.

D. secure the communication channel between the multicast sender and receiver.

None

34.

Refer to the exhibit. What are two effect of this configuration? (Choose two.)

A. Inside source addresses are translated to the 209.165.201.0/27 subnet.

B. It establishes a one-to-one NAT translation.

C. The 10.1.1.0/27 subnet is assigned as the inside global address range.

D. The 209.165.201.0/27 subnet is assigned as the outside local address range.

E. The 10.1.1.0/27 subnet is assigned as the inside local addresses.

35.

Refer to the exhibit. Object tracking has been configured for VRRP-enabled routers Edge-01 and Edge-02 Which commands cause Edge-02 to preempt Edge-01 in the event that interface G0/0 goes down on Edge-01?

A. Edge-01(config)#interface G0/1 Edge-01(config-if)#vrrp 10 track 10 decrement 30

B. Edge-02(config)#interface G0/1 Edge-02(config-if)#vrrp 10 track 10 decrement 30

C. Edge-02(config)#interface G0/1 Edge-02(config-if)#vrrp 10 track 10 decrement 10

D. Edge-01(config)#interface G0/1 Edge-01(config-if)#vrrp 10 track 10 decrement 10

None

36.

By default, which virtual MAC address does HSRP group 25 use?

A. 05:5c:5e:ac:0c:25

B. 04:16:6S:96:1C:19

C. 00:00:0c:07:ac:19

D. 00:00:0c:07:ac:25

None

37.

Which two actions, when applied in the LAN network segment, will facilitate Layer 3 CAPWAP discoveryfor lightweight AP? (Choose two.)

A. Utilize DHCP option 17.

B. Configure WLC IP address on LAN switch.

C. Utilize DHCP option 43.

D. Configure an ip helper-address on the router interface

E. Enable port security on the switch port

None

38.

Refer to the exhibit. Which router is elected as the VRRP primary virtual router?

A. Router B

B. Router D

C. Router C

D. Router A

None

39.

Refer to the exhibit. The server in DC2 is expecting traffic from the database in DC1 to use the source network of 10.50.250.0/24. The server sends the initial request. The inside global IP is configured for 10.50.250.1. What is the result of this configuration?

A. Only the server can initiate communication.

B. The server and the database cannot communicate.

C. The server and the database can initiate communication.

D. Only the database can initiate communication.

None

40.

Refer to the exhibit. Which command allows hosts that are connected to FastEthernet0/2 to access the Internet?

A. ip nat inside source list 10 interface FastEthernet0/1 overload

B. ip nat inside source list 10 interface FastEthernet0/2 overload

C. ip nat outside source list 10 interface FastEthernet0/2 overload

D. ip nat outside source static 209.165.200.225 10.10.10.0 overload

None

41.

Which router is elected the IGMP Querier when more than one router is in the same LAN segment?

A. The router with the shortest uptime

B. The router with the lowest IP address

C. The router with the highest IP address

D. The router with the longest uptime

None

42.

When is GLBP preferred over HSRP?

A. When encrypted helm are required between gateways h a single group.

B. When the traffic load needs to be shared between multiple gateways using a single virtual IP.

C. When the gateway routers are a mix of Cisco and non-Cisco routers

D. When clients need the gateway MAC address lo Be the same between multiple gateways

None

43.

Refer to the exhibit. An engineer attempts to configure standby group 512 on interface GigabitEthernet0/1, but the configuration is not accepted. Which command resolves this problem?

A. standby version 2

B. standby 512 preempt

C. standby redirects

D. standby 512 priority 100

None

44.

By default, which virtual MAC address does HSRP group 22 use?

A. c0:42:01:67:05:16

B. c0:07:0c:ac:00:22

C. 00:00:0c:07:ac:16

D. 00:00:0c:07:ac:22

None

45.

How do stratum levels relate to the distance from a time source?

A. Stratum 0 devices are connected directly to an authoritative time source

B. Stratum 1 devices are connected directly to an authoritative time source

C. Stratum 15 devices are connected directly to an authoritative time source

D. Stratum 15 devices are an authoritative time source

None

46.

By default, which virtual MAC address does HSRP group 15 use?

A. 05:5e:ac:07:0c:0f

B. c0:42:34:03:73:0f

C. 00:00:0c:07:ac:0f

D. 05:af:1c:0f:ac:15

None

47.

Refer to the exhibit. A network engineer configures NAT on R1 and enters the show command to verify the configuration. What does the output confirm?

A. The first pocket triggered NAT to add on entry to NAT table

B. R1 is configured with NAT overload parameters

C. A Telnet from 160.1.1 1 to 10.1.1.10 has been initiated.

D. R1 to configured with PAT overload parameters

None

48.

What mechanism does PIM use to forward multicast traffic?

A. PIM sparse mode uses a pull model to deliver multicast traffic.

B. PIM dense mode uses a pull model to deliver multicast traffic.

C. PIM sparse mode uses receivers to register with the RP.

D. PIM sparse mode uses a flood and prune model to deliver multicast traffic.

None

49.

Which behavior can be expected when the HSRP versions is changed from 1 to 2?

A. Each HSRP group reinitializes because the virtual MAC address has changed.

B. No changes occur because version 1 and 2 use the same virtual MAC OUI.

C. Each HSRP group reinitializes because the multicast address has changed.

D. No changes occur because the standby router is upgraded before the active router.

None

50.

How does Protocol Independent Multicast function?

A. In sparse mode it establishes neighbor adjacencies and sends hello messages at 5-second intervals

B. It uses the multicast routing table to perform the multicast forwarding function.

C. It uses unicast routing information to perform the multicast forwarding function.

D. It uses broadcast routing information to perform the multicast forwarding function.

None

51.

How does SSO work with HSRP to minimize network disruptions?

A. It enables HSRP to elect another switch in the group as the active HSRP switch.

B. It ensures fast failover in the case of link failure.

C. It enables data forwarding along known routes following a switchover, white the routing protocol reconverges.

D. It enables HSRP to failover to the standby RP on the same device.

None

52.

Refer to the exhibit. What are two results of the NAT configuration? (Choose two.)

A. Packets with a destination of 200.1.1.1 are translated to 10.1.1.1 or .2. respectively.

B. A packet that is sent to 200.1.1.1 from 10.1.1.1 is translated to 209.165.201.1 on R1.

C. R1 looks at the destination IP address of packets entering S0/0 and destined for inside hosts.

D. R1 processes packets entering E0/0 and S0/0 by examining the source IP address.

E. R1 is performing NAT for inside addresses and outside address.

53.

Which two security features are available when implementing NTP? (Choose two )

A. symmetric server passwords

B. dock offset authentication

C. broadcast association mode

D. encrypted authentication mechanism

E. access list-based restriction scheme

54.

Refer to the exhibit. An engineer must implement HSRP between two WAN routers. In the event R1 tails and then regains operational status, it must allow 100 seconds for the routing protocol to converge before preemption takes effect. Which configuration is required?

A. R2 interface Gi0/0 standby 300 preempt standby 300 delay sync 100

B. R1 interface Gi0/0 standby 300 preempt standby 300 delay minimum 100

C. R1 interface Gi0/0 standby 300 preempt R2 interface Gi0/0 standby 300 delay sync 100

D. R1 interface Gi0/0 standby 300 preempt R2 interface Gi0/0 standby 300 delay minimum 100

None

55.

Refer lo the exhibit. Which address type is 10.10.10.10 configured for?

A. inside global

B. outside local

C. outside global

D. inside local

None

56.

Relet lo Ibe exhibit. An engineer must modify the existing configuration so that R2 can take over as the primary router when serial interface 0/0.1 on R1 goes down. Which command must the engineer apply?

A. R2W standby 100 track 26 decrement 10

B. R2# standby 100 preempt

C. R2# track 26 interface SerialWO.1 line-protocol

D. R2# standby 100 priority 100

None

57.

By default, which virtual MAC address does HSRP group 30 use?

A. 00:05:0c:07:ac:30

B. 00:00:0c:07:ac:1e

C. 05:0c:5e:ac:07:30

D. 00:42:18:14:05:1e

None

58.

Refer to the exhibit. An engineer must configure PAT to provide internet access to all users by using one global address for many local addresses. Which command set completes the configuration?

A. RouterA(config)# ip nat inside source list 1 pool Cisco overload

B. RouterA(config)# ip nat inside source static 172.16.1.1 193.64.64.1

C. RouterA(config)# ip nat inside source static 172.16.1.1 172.16.1.2

D. RouterA(config)# ip nat inside source list 1 pool Cisco

None

59.

Refer to the exhibit. What is the result of the configuration?

A. It enables NTP in client mode

B. It allows interface g0/1 to send and receive NTP broadcast packets

C. It allows interface g0/1 to send NTP broadcast packets.

D. It allows interface g0/1 to receive NTP broadcast packets.

None

60.

What is the function of an RP in a PIM-SM network?

A. to provide routing to the PIM leaf routers

B. to track sources and recovers on the shared distribution tree

C. to automate the distribution of group-to rendezvous point mappings

D. to connect multicast sources with receivers

None

61.

If a VRRP master router fails, which router is selected as the new master router?

A. router with the highest priority

B. router with the highest loopback address

C. router with the lowest loopback address

D. router with the lowest priority

None

62.

Which First Hop Redundancy Protocol maximizes uplink utilization and minimizes the amount of configuration that is necessary?

A. GLBP

B. HSRP v2

C. VRRP

D. HSRP v1

None

63.

Which First Hop Redundancy Protocol should be used to meet a design requirements for more efficient default bandwidth usage across multiple devices?

A. GLBP

B. LCAP

C. HSRP

D. VRRP

None

64.

Which two statements about HSRP are true? (Choose two)

A. It supports unique virtual MAC addresses

B. Its virtual MAC is 0000.0C07.ACxx

C. Its default configuration allows for pre-emption

D. It supports tracking

E. Its multicast virtual MAC is 0000.5E00.01xx

65.

What are three valid HSRP states? (Choose three)

A. INIT

B. listen

C. full

D. learning

E. speak

F. established

66.

QUESTION 95 An engineer must configure HSRP group 300 on a Cisco IOS router. When the router is functional, it must be the active HSRP router. The peer router has been configured using the default priority value. Which command set is required?

A. standby version 2 standby 300 priority 110 standby 300 preempt

B. standby 300 priority 110 standby 300 timers 1 110

C. standby version 2 standby 300 priority 90 standby 300 preempt

D. standby 300 priority 90 standby 300 preempt

None

67.

What are two methods of ensuring that the multicast RPF check passes without changing the unicast routing table? (Choose two.)

A. implementing static mroutes

B. disabling BGP routing protocol

C. implementing MBGP

D. disabling the interface of the router back to the multicast source

E. implementing OSPF routing protocol

68.

Refer to the exhibit. The CPE router acts as a DHCP server for the locally attached LAN. After DHCP snooping is enabled on the switch where the DHCP clients are connected, clients are unable to obtain their configuration from the DHCP server. What is the cause of this issue?

A. The IP address of the DHCP server is in the excluded DHCP range.

B. The configuration of Gi0/1 is missing the ip helper-address 192.168.255.1 command.

C. The DHCP server drops DHCP packets carrying Option 82 and an empty relay agent IP address.

D. The excluded DHCP range contains the subnet address of the entire LAN network.

None

69.

With IGMPv2, which multicast group address does the IGMP querier use to send query messages to all hosts on the LAN?

A. 239.0.0.2

B. 224.0.0.1

C. 239.0.0.1

D. 224.0.0.2

None

70.

Refer to the exhibit. Edge-01 is currently operational as the HSRP primary with priority 110. Which command on Edge-02 causes it to take over the forwarding role when Edge-01 is down?

A. standby 10 priority

B. standby 10 preempt

C. standby 10 track

D. standby 10 timers

None

71.

Refer to the exhibit. Reachability between servers in a network deployed with DHCPv6 is unstable. Which command must be removed from the configuration to make DHCPv6 function?

A. ipv6 address 2001:0:1:4::1/64

B. ipv6 dhcp server DHCPPOOL

C. ipv6 nd ra suppress

D. address prefix 2001:0:1:4::/64 lifetime infinite infinite

None

72.

Which of the following are true statements regarding the Virtual Router Redundancy Protocol (VRRP) feature? (Choose two.)

A. Pre-emption is enabled by default

B. The router priority is a configurable value from 0-4095

C. MD5 authentication is supported with VRRP.

D. Secondary IP addresses are supported with VRRP.

E. VRRP can only be used with Cisco devices

73.

You need to implement a First Hop Redundancy Protocol (FHRP) in a dual stack (IPv4 and IPV6) environment that utilizes devices from multiple different vendors. Which protocol best meets these needs?

A. HSRP

B. GLBP

C. VRRPv1

D. VRRPv2

None

74.

Refer to the exhibit. Which action completes the configuration to achieve a dynamic continuous mapped NAT for all users?

A. Configure a match-host type NAT pool

B. Reconfigure the pool to use the 192.168 1 0 address range

C. Increase the NAT pool size to support 254 usable addresses

D. Configure a one-to-one type NAT pool

None

75.

. What is the IP address for the Cisco-RP-announce multicast group?

A. 224.0.1.49

B. 224.0.0.1

C. 224.0.0.40

D. 224.0.1.39

None

76.

Which is a characteristic of PIM sparse mode?

A. It uses a pruning mechanism to stop the flow of unwanted multicast traffic on interfaces with no downstream neighbors.

B. It requires an RP on the network to act as the root of the shared distribution tree.

C. It builds the multicast tree by flooding traffic out all interfaces.

D. It is designed for networks where receivers are located on every subnet in the network.

None

77.

The bootstrap router (BSR) mechanism of automating the distribution of rendezvous point (RP) information uses which IP address to disseminate information to all protocol independent multicast (PIM) routers?

A. 224.1.0.13

B. 224.0.0.13

C. 224.1.1.13

D. 224.0.1.13

None

78.

A network administrator is troubleshooting an IP multicast problem. Where can the administrator view source S, group G, incoming interfaces (IIF), outgoing interfaces (OIFs), and RPF neighbor information for each multicast route?

A. in unicast routing table

B. in the routing information base

C. in the multicast forwarding information base

D. in the multicast routing information base

None

79.

A network administrator statically assigns a multicast address of 239.255.8.5 to an application running on a server. The NIC on the server is with the MAC address of AB.54.C1.01.B8.9F. Which Layer 2 multicast address will receivers use on their interfaces in order to receive the multicast feed?

A. 01:00:5E:01:B8:9F

B. AB:54:C1:17:A8:02

C. 01:00:5E:7F:08:05

D. AB:54:C1:7F:08:05

None

80.

Which notation is used to refer to the forwarding state in PIM shared trees?

A. (*,G)

B. (S,G)

C. (*,S)

D. (G,S)

None

81.

Which statement about IGMPv3 is true?

A. It sends IGMP query messages with a TTL value of 1 addressed to the all-host group (224.0.0.1).

B. It rejects any group-specific query message that is sent from the hosts that want to join a multicast group.

C. It enables a multicast receiver to signal to the first hop router the multicast sources from which it expects to receive traffic.

D. It does not accept a leave group message from the hosts that have already joined the multicast group.

None

82.

Which well-know multicast group is joined by all PIM-enabled routers to receive RP mappings?

A. 224.0.0.2

B. 224.0.0.13

C. 224.0.1.40

D. 224.0.1.39

None

83.

An administrator has configured and enabled multicast together with PIM sparse mode on all VLANs on the network. Which feature helps to reduce multicast traffic being broadcast on the access layer switches?

A. source registration

B. PIM Pruning

C. IGMP snooping

D. SPT switchover

None

84.

Which two IGMPv3 modes are used to signal membership to a multicast host group? (Choose two.)

A. preclude

B. join

C. include

D. rendezvous

E. exclude

F. leave

85.

Which statement describes a characteristic of IP multicast routing?

A. PIM hello messages are sent every 60 seconds by default out each PIM enabled interface.

B. PIM dense mode flood and prune behavior repeats every three minutes.

C. PIM sparse mode builds the multicast tree through flooding of traffic out every interface.

D. PIM sparse mode and PIM dense mode require an RP on the network.

None

86.

To which multicast group does a candidate RP send announcement messages to advertise its willingness to be an RP?

A. 224.0.0.13

B. 224.0.1.40

C. 224.0.1.39

D. 224.0.0.2

None

87.

Which two statements about Protocol Independent Multicast (PIM) are true? (Choose two.)

A. Three of the forwarding modes for PIM are PIM dense mode (PIM-DM), PIM sparse mode (PIM-SM), and PIM sparse-dense mode. PIM is a multicast routing protocol that makes packet-forwarding decisions independent of the unicast IP routing protocol that is running in the network.

B. PIM should be configured on the device that hosts the source of the muticast traffic.

C. PIM sparse mode is most useful when there are few senders, many receivers, and the volume of multicast traffic is high.

D. PIM should be configured only on the first and the last hop routers in the multicast tree.

E. PIM does not require an IGP protocol to be configured in the network.

88.

Which two statements describe IGMP? (Choose two.)

A. IGMPv2 supports multicast source filtering.

B. IGMPv1 only supports queries sent to a predefined group.

C. IGMPv3 provides support for SSM.

D. An IGMPv2 router will only allow IGMPv2 hosts to execute a join request.

E. Multicast flooding on a LAN segment can be mitigated by using IGMP snooping.

89.

Which nonproprietary mechanism does PIM use to discover and announce RP set information for each group prefix for all the routers in a PIM domain?

A. Static RP

B. BSR

C. RPF

D. Auto-RP

None

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