QUESTION 111
Which two RSTP port roles include the port as part of the active topology? (Choose two.)

A.    root
B.    designated
C.    alternate
D.    backup
E.    forwarding
F.    learning

Answer: AB

QUESTION 112
Which two statements correctly describe characteristics of the PortFast feature? (Choose two.)

A.    STP is disabled on the port.
B.    PortFast can also be configured on trunk ports.
C.    PortFast is needed to enable port-based BPDU guard.
D.    PortFast is used for STP and RSTP host ports.
E.    PortFast is used for STP-only host ports.

Answer: BD

QUESTION 113
Refer to the exhibit. GLBP has been configured on the network. When the interface serial0/0/1 on router R1 goes down, how is the traffic coming from Host1 handled?

A.    The traffic coming from Host1 and Host2 is forwarded through router R2 with no disruption.
B.    The traffic coming from Host2 is forwarded through router R2 with no disruption. Host1 sends an ARP request to resolve the MAC address for the new virtual gateway.
C.    The traffic coming from both hosts is temporarily interrupted while the switchover to make R2 active occurs.
D.    The traffic coming from Host2 is forwarded through router R2 with no disruption. The traffic from Host1 is dropped due to the disruption of the load balancing feature configured for the GLBP group.

Answer: A

QUESTION 114
Which statement correctly describes the Cisco implementation of RSTP?

A.    PortFast, UplinkFast, and BackboneFast specific configurations are ignored in Rapid PVST mode.
B.    RSTP is enabled globally and uses existing STP configuration.
C.    Root and alternative ports transition immediately to the forwarding state.
D.    Convergence is improved by using subsecond timers for the blocking, listening, learning, and forwarding port states.

Answer: B

QUESTION 115
What is the effect of applying the "switchport trunk encapsulation dot1q" command to a port on a Cisco Catalyst switch?

A.    By default, native VLAN packets going out this port are tagged.
B.    Without an encapsulation command, 802.1Q is the default encapsulation if DTP fails to negotiate a trunking protocol.
C.    The interface supports the reception of tagged and untagged traffic.
D.    If the device connected to this port is not 802.1Q-enabled, it is unable to handle 802.1Q packets.

Answer: C

QUESTION 116
Refer to the exhibit. DHCP snooping is enabled for selected VLANs to provide security on the network. How do the switch ports handle the DHCP messages?

A.    A DHCPOFFER packet from a DHCP server received on Ports Fa2/1 and Fa2/2 is dropped.
B.    A DHCP packet received on ports Fa2/1 and Fa2/2 is dropped if the source MAC address and the DHCP client hardware address does not match Snooping database.
C.    A DHCP packet received on ports Fa2/1 and Fa2/2 is forwarded without being tested.
D.    A DHCPRELEASE message received on ports Fa2/1 and Fa2/2 has a MAC address in the DHCP snooping binding database, but the interface information in the binding database does not match the interface on which the message was received and is dropped.

Answer: C

QUESTION 117
Refer to the exhibit and the partial configuration on routers R1 and R2. HSRP is configured on the network to provide network redundancy for the IP traffic. The network administrator noticed that R2 does not become active when the R1 serial0 interface goes down. What should be changed in the configuration to fix the problem?

A.    R2 should be configured with an HSRP virtual address.
B.    R2 should be configured with a standby priority of 100.
C.    The Serial0 interface on router R2 should be configured with a decrement value of 20.
D.    The Serial0 interface on router R1 should be configured with a decrement value of 20.

Answer: D

QUESTION 118
Which two statements concerning STP state changes are true? (Choose two.)

A.    Upon bootup, a port transitions from blocking to forwarding because it assumes itself as root.
B.    Upon bootup, a port transitions from blocking to listening because it assumes itself as root.
C.    Upon bootup, a port transitions from listening to forwarding because it assumes itself as root.
D.    If a forwarding port receives no BPDUs by the max_age time limit, it will transition to listening.
E.    If a forwarding port receives an inferior BPDU, it will transition to listening.
F.    If a blocked port receives no BPDUs by the max_age time limit, it will transition to listening.

Answer: BF

QUESTION 119
Refer to the exhibit. For what purpose is the command show ip cef used?

A.    to display rewritten IP unicast packets
B.    to display ARP resolution packets
C.    to display ARP throttling
D.    to display TCAM matches
E.    to display CEF-based MLS lookups
F.    to display entries in the Forwarding Information Base (FIB)

Answer: F

QUESTION 120
What will occur when a nonedge switch port that is configured for Rapid Spanning Tree does not receive a BPDU from its neighbor for three consecutive hello time intervals?

A.    RSTP information is automatically aged out.
B.    The port sends a TCN to the root bridge.
C.    The port moves to listening state.
D.    The port becomes a normal spanning tree port.

Answer: A

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