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Q141. DRAG DROP
Drag and drop the SNMP element on the left to the corresponding definition on the right.
Answer:
Q142. Which three responses can a remote RADIUS server return to a client? (Choose three.)
A. Reject-Challenge
B. Access-Reject
C. Accept-Confirmed
D. Access-Accept
E. Access-Challenge
F. Reject-Access
Answer: B,D,E
Q143. DRAG DROP
Drag and drop the QoS requirement on the left to the correct QoS technology on the right.
Answer:
Q144. DRAG DROP
Drag and drop each SNMP security model and level on the left to the corresponding mode of authentication on the right.
Answer:
Q145. Refer to the exhibit.
Which type of BGP peer is 192.168.1.1?
A. route reflector client
B. iBGP
C. confederation
D. VPNv4
Answer: C
Q146. Refer to the exhibit.
NHRP registration is failing; what might be the problem?
A. invalid IP addressing
B. fragmentation
C. incorrect NHRP mapping
D. incorrect NHRP authentication
Answer: D
Explanation:
Configuring an authentication string ensures that only routers configured with the same string can communicate using NHRP. Therefore, if the authentication scheme is to be used, the same string must be configured in all devices configured for NHRP on a fabric
Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_4/ip_addr/configuration/guide/hadnhrp.html#w p1055432
Q147. When you migrate a network from PVST+ to rapid-PVST+, which two features become inactive? (Choose two.)
A. Root guard
B. Loop guard
C. UplinkFast
D. UDLD
E. BackboneFast
F. Bridge Assurance
Answer: C,E
Explanation:
It is good to know the UplinkFast and BackboneFast behavior before you start the migration process.
Here, the Access1 switch runs Cisco IOS. This output is taken before migration to the rapid-PVST+ mode:
Access1#show spanning-tree vlan 10
VLAN0010
Spanning tree enabled protocol ieee
Root ID Priority 24586
Address 0015.63f6.b700
Cost 3019
Port 107 (FastEthernet3/0/1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 49162 (priority 49152 sys-id-ext 10)
Address 000f.f794.3d00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Uplinkfast enabled
Interface Role Sts Cost Prio.Nbr Type
Fa3/0/1 Root FWD 3019 128.107 P2p
Fa3/0/2 Altn BLK 3019 128.108 P2p
Access1#show spanning-tree summary
Switch is in pvst mode
Root bridge for: none
Extended system ID is enabled
Portfast Default is disabled
PortFast BPDU Guard Default is enabled
Portfast BPDU Filter Default is disabled
Loopguard Default is disabled
EtherChannel misconfig guard is enabled
UplinkFast is enabled
BackboneFast is enabled
Configured Pathcost method used is short
Name Blocking Listening Learning Forwarding STP Active
VLAN0010 1 0 0 1 2
VLAN0020 1 0 0 1 2
2 vlans 2 0 0 2 4
This output is taken after the mode is changed to rapid-PVST+:
Access1#show spanning-tree vlan 10
VLAN0010
Spanning tree enabled protocol rstp
Root ID Priority 24586
Address 0015.63f6.b700
Cost 3019
Port 107 (FastEthernet3/0/1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 49162 (priority 49152 sys-id-ext 10)
Address 000f.f794.3d00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
UplinkFast enabled but inactive in rapid-pvst mode
Interface Role Sts Cost Prio.Nbr Type
Fa3/0/1 Root FWD 3019 128.107 P2p
Fa3/0/2 Altn BLK 3019 128.108 P2p
Access1#show spanning-tree summary
Switch is in rapid-pvst mode
Root bridge for: none
Extended system ID is enabled
Portfast Default is disabled
PortFast BPDU Guard Default is enabled
Portfast BPDU Filter Default is disabled
Loopguard Default is disabled
EtherChannel misconfig guard is enabled
UplinkFast is enabled but inactive in rapid-pvst mode
BackboneFast is enabled but inactive in rapid-pvst mode
Configured Pathcost method used is short
Name Blocking Listening Learning Forwarding STP Active
VLAN0010 1 0 0 1 2
VLAN0020 1 0 0 1 2
2 vlans 2 0 0 2 4
You can see in the show spanning-tree summary command output that UplinkFast and BackboneFast are enabled, but are inactive in rapid-PVST mode.
Reference: http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/72836-rapidpvst-mig-config.html#upback1
Q148. Which technology can MSDP SA filters use to filter traffic?
A. route maps
B. community lists
C. prefix lists
D. class maps
Answer: A
Q149. Refer to the exhibit.
Why is the host unable to obtain an IP address?
A. IP source guard is configured on the switch port.
B. The DHCP server pool addresses are configured incorrectly.
C. DHCP requests are being blocked.
D. DHCP option 150 is disabled.
Answer: A
Q150. Refer to the exhibit.
Which two statements about the device that generated the output are true? (Choose two.)
A. The SPT-bit is set.
B. The sparse-mode flag is set.
C. The RP-bit is set.
D. The source-specific host report was received.
Answer: A,D
Explanation:
In this example we can see that the s, T, and I flags are set. Here is a list of the flags and their meanings:
show ip mroute Field Descriptions
Field Description
Flags:
Provides information about the entry.
D - Dense
Entry is operating in dense mode.
S - Sparse
Entry is operating in sparse mode.
B - Bidir Group
Indicates that a multicast group is operating in bidirectional mode.
s - SSM Group Indicates that a multicast group is within the SSM range of IP addresses. This flag is reset if the SSM range changes.
C - Connected
A member of the multicast group is present on the directly connected interface.
L - Local
The router itself is a member of the multicast group.
P - Pruned
Route has been pruned. The Cisco IOS software keeps this information so that a downstream member can join the source.
R - RP-bit set
Indicates that the (S, G) entry is pointing toward the RP. This is typically prune state along the shared tree for a particular source.
F - Register flag
Indicates that the software is registering for a multicast source.
T - SPT-bit set
Indicates that packets have been received on the shortest path source tree.
J - Join SPT
For (*, G) entries, indicates that the rate of traffic flowing down the shared tree is exceeding the SPT-Threshold set for the group. (The default SPT-Threshold setting is 0 kbps.) When the J- Join shortest path tree (SPT) flag is set, the next (S, G) packet received down the shared tree triggers an (S, G) join in the direction of the source, thereby causing the router to join the source tree.
For (S, G) entries, indicates that the entry was created because the SPT-Threshold for the group was exceeded. When the J- Join SPT flag is set for (S, G) entries, the router monitors the traffic rate on the source tree and attempts to switch back to the shared tree for this source if the traffic rate on the source tree falls below the SPT-Threshold of the group for more than 1 minute.
M - MSDP created entry
Indicates that a (*, G) entry was learned through a Multicast Source Discovery Protocol (MSDP) peer. This flag is only applicable for a rendezvous point (RP) running MSDP.
X - Proxy Join Timer Running
Indicates that the proxy join timer is running. This flag is only set for (S, G) entries of an RP or "turnaround" router. A "turnaround" router is located at the intersection of a shared path (*, G) tree and the shortest path from the source to the RP.
A - Advertised via MSDP
Indicates that an (S, G) entry was advertised through an MSDP peer. This flag is only applicable for an RP running MSDP.
U - URD
Indicates that a URD channel subscription report was received for the (S, G) entry.
I - Received Source Specific Host Report
Indicates that an (S, G) entry was created by an (S, G) report. This (S, G) report could have been created by IGMPv3, URD, or IGMP v3lite. This flag is only set on the designated router (DR).
Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/12s_ssm.html