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Which congestion-avoidance or congestion-management technique can cause global synchronization?

A. Tail drop

B. Random early detection

C. Weighted random early detection

D. Weighted fair queuing

Answer: A


Refer to the exhibit.

Which statement describes the effect on the network if FastEthernet0/1 goes down temporarily?

A. FastEthernet0/2 forwards traffic only until FastEthernet0/1 comes back up.

B. FastEthernet0/2 stops forwarding traffic until FastEthernet0/1 comes back up.

C. FastEthernet0/2 forwards traffic indefinitely.

D. FastEthernet0/1 goes into standby.

Answer: C


Refer to the exhibit.

Which three statements about the output are true? (Choose three.)

A. An mrouter port can be learned by receiving a PIM hello packet from a multicast router.

B. This switch is configured as a multicast router.

C. Gi2/0/1 is a trunk link that connects to a multicast router.

D. An mrouter port is learned when a multicast data stream is received on that port from a multicast router.

E. This switch is not configured as a multicast router. It is configured only for IGMP snooping.

F. IGMP reports are received only on Gi2/0/1 and are never transmitted out Gi2/0/1 for VLANs 10 and 20.

Answer: A,B,C


Refer to the exhibit.

While troubleshooting high CPU utilization on one of your Cisco Catalyst switches, you find that the issue is due to excessive flooding that is caused by STP. What can you do to prevent this issue from happening again?

A. Disable STP completely on the switch.

B. Change the STP version to RSTP.

C. Configure PortFast on port-channel 1.

D. Configure UplinkFast on the switch.

E. Configure PortFast on interface Gi0/15.

Answer: E


Refer to the exhibit.

Which action will solve the error state of this interface when connecting a host behind a Cisco IP phone?

A. Configure dot1x-port control auto on this interface

B. Enable errdisable recovery for security violation errors

C. Enable port security on this interface

D. Configure multidomain authentication on this interface

Answer: D


Refer to the exhibit.

Which statement is true?

A. It is impossible for the destination interface to equal the source interface.

B. NAT on a stick is performed on interface Et0/0.

C. There is a potential routing loop.

D. This output represents a UDP flow or a TCP flow.

Answer: C


A TCP/IP host is able to transmit small amounts of data (typically less than 1500 bytes), but attempts to transmit larger amounts of data hang and then time out. What is the cause of this problem?

A. A link is flapping between two intermediate devices.

B. The processor of an intermediate router is averaging 90 percent utilization.

C. A port on the switch that is connected to the TCP/IP host is duplicating traffic and sending it to a port that has a sniffer attached.

D. There is a PMTUD failure in the network path.

Answer: D


Which three statements are true about PPP CHAP authentication? (Choose three.)

A. PPP encapsulation must be enabled globally.

B. The LCP phase must be complete and in closed state.

C. The hostname used by a router for CHAP authentication cannot be changed.

D. PPP encapsulation must be enabled on the interface.

E. The LCP phase must be complete and in open state.

F. By default, the router uses its hostname to identify itself to the peer.

Answer: D,E,F


Which two options are reasons for TCP starvation? (Choose two.)

A. The use of tail drop

B. The use of WRED

C. Mixing TCP and UDP traffic in the same traffic class

D. The use of TCP congestion control

Answer: C,D


Refer to the exhibit.

Which configuration is missing that would enable SSH access on a router that is running Cisco IOS XE Software?

A. int Gig0/0/

B. class-map ssh-class match access-group protect-ssh policy-map control-plane-in class ssh-class police 80000 conform transmit exceed drop control-plane service-policy input control-plane-in

C. control-plane host management-interface GigabitEthernet0/0/0 allow ssh

D. interface Gig0/0/0 ip access-group protect-ssh in

Answer: C

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