21세기 IT업계가 주목 받고 있는 시대에 그 경쟁 또한 상상 할만 하죠!  it업계 중  CCIE 350-001 (CCIE Cisco Certified InterNetworking Expert)   인증시험도 아주 인기가 많은 시험입니다. 응시자는 매일매일 많아지고 있으며 패스하는 분들은 관련 it업계에서 많은 지식과내공을 지닌 분들뿐입니다.Pass4Test 는 여러분의 it전문가 꿈을 이루어 드리는 사이트 입다. Pass4Test는 여러분이 우리 자료로 관심가는 인중시험에 응시하여 안전하게 자격증을 취득할 수 있도록 도와드립니다. 아직도  CCIE 350-001 (CCIE Cisco Certified InterNet working Expert)  인증시험으로 고민하시고 계십니까? CCIE 350-001 (CCIE Cisco Certified InterNetworking Expert)   인증시험 가이드를사용하실 생각은 없나요? Pass4Test는 여러분께 편리를 드릴 수 있습니다.Pass4Test의 자료는 시험대비 최고의 덤프로 시험패스는 문제없습니다. Pass4Test의 퍼펙트한 덤프인  CCIE 350-001 (CCIE Cisco Certified InterNetworking Expert)   인증시험 자료의 문제와 답만열심히 공부하면 여러분은 완전 안전히 CCIE 350-001 (CCIE Cisco Certified InterNetworking Expert)  인증 자격증을 취득하실 수 있습니다. CCIE 350-001 (CCIE Cisco Certified InterNetworking Expert)  인증시험이 이토록 인기가 많으니 우리 Pass4Test에서는 모든 힘을다하여 여러분이 응시에 도움을 드리겠으며 또 일년무료 업뎃서비스를 제공하며  Pass4Test 선택으로 여러분은 자신의 꿈과 더 가까워질 수 있습니다. 희망찬 내일을 위하여 Pass4Test선택은 정답입니다. Pass4Test선택함으로 당신이 바로 진정한 IT인사입니다.

 

 

 

 

NO.1 Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two
ways does loop guard differ from UDLD in loop detection and prevention? (Choose two)
A. Loop guard can be used with root guard simultaneously on the same port on the same VLAN while
UDLD cannot.
B. UDLD protects against STP failures caused by cabling problems that create one-way links.
C. Loop guard detects and protects against duplicate packets being received and transmitted on different
ports.
D. UDLD protects against unidirectional cabling problems on copper and fiber media.
E. Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a
designated switch port
Answer: BE

NO.2 Prior to 802.1w, Cisco implemented a number of proprietary enhancements to 802.1D to improve
convergence in a Layer 2 network. Which statement is correct?
A. Only UplinkFast and BackboneFast are specified in 802.1w; PortFast must be manually configured.
B. Only PortFast is specified in 802.1w; UplinkFast and BackboneFast must be manually configured.
C. None of the proprietary Cisco enhancements are specified in 802.1w.
D. PortFast, UplinkFast, and BackboneFast are specified in 802.1w.
Answer: D

NO.3 Which of these correctly identifies a difference between the way BPDUs are handled by 802.1w and
802.1D?
A. 802.1D bridges do not relay BPDUs.
B. 802.1w bridges do not relay BPDUs.
C. 802.1D bridges only relay BPDUs received from the root.
D. 802.1w bridges only relay BPDUs received from the root.
Answer: C

NO.4 Why does RSTP have a better convergence time than 802.1D?
A. It is newer
B. It has smaller timers
C. It has less overhead
D. It is not timer-based
Answer: D

NO.5 What is the purpose of the STP PortFast BPDU guard feature?
A. enforce the placement of the root bridge in the network
B. ensure that a port is transitioned to a forwarding state quickly if a BPDU is received
C. enforce the borders of an STP domain
D. ensure that any BPDUs received are forwarded into the STP domain
Answer: C

NO.6 Which three port states are used by RSTP 802.1w? (Choose three.)
A. Listening
B. Learning
C. Forwarding
D. Blocking
E. Discarding
F. Disabled
Answer: BCE

NO.7 Refer to the exhibit.
Which switching feature is being tested?
A. loop guard
B. PortFast
C. root guard
D. BDPU guard
Answer: A

NO.8 As a network administrator, can you tell me what the root guard feature provides in a bridged network?
A. It ensures that BPDUs sent by the root bridge are forwarded in a timely manner
B. It enforces the root bridge placement in the network
C. It ensures that all ports receiving BPDUs from the root bridge are in the forwarding state.
D. It ensures that the bridge is elected as Root Bridge in the network.
Answer: B

NO.9 You have done a partial migration from 802.1D STP to 802.1w STP. Which of the following is true?
A. 802.1D and 802.1w interoperate only when the 802.1D STP domain supports rapid convergence.
B. Ports leading to 802.1D devices will run in compatibility mode, while the rest of the ports will run in
802.1w mode.
C. This is an invalid configuration and a partial migration cannot be done.
D. The bridge timers will be set to match the 802.1D devices.
E. A secondary root bridge will always be populated within the 802.1D domain.
F. If the root bridge is selected within the 802.1D domain, the whole STP domain will run in 802.1D
compatibility mode.
G. In partially migrated 802.1w networks, it is recommended to keep the STP diameter below 4.
Answer: B

NO.10 What two features in Cisco switches help prevent Layer 2 loops? (Choose two)
A. UniDirectional Link Detection
B. Hot Standby Router Protocol
C. Virtual Router Redundancy Protocol
D. PortFast
E. Root guard
F. Loop guard
Answer: AF

NO.11 If a port configured with STP loop guard stops receiving BPDUs, the port will be put into which state?
A. learning state
B. listening state
C. forwarding state
D. loop-inconsistent state
Answer: D

NO.12 Refer to the exhibit.
In the diagram, the switches are running IEEE 802.1s MST. Which ports are in the MST blocking state?
A. GE-1/2 and GE-2/1
B. GE-1/1 and GE-2/2
C. GE-3/2 and GE-4/1
D. no ports are in the blocking state
E. There is not enough information to determine which ports are in the blocking state.
Answer: D

NO.13 Under which two circumstances would an RSTP bridge flush its CAM table? (Choose two)
A. Upon a port state change
B. Upon receiving a topology change notification
C. When transitioning from discarding to forwarding
D. When transitioning from forwarding to discarding
E. Only when changing from listening to discarding
F. When CAM resources have been completely used up
Answer: BC

NO.14 When STP UplinkFast is enabled on a switch utilizing the default bridge priority, what will the new bridge
priority be changed to?
A. 8192
B. 16384
C. 49152
D. 65535
Answer: C

NO.15 Spanning Tree Protocol IEEE 802.1s defines the ability to deploy which of these?
A. one global STP instance for all VLANs
B. one STP instance for each VLAN
C. one STP instance per set of VLANs
D. one STP instance per set of bridges
Answer: C

NO.16 Refer to the exhibit.
In the diagram, the switches are running IEEE 802.1w RSPT.
On which ports should root guard be enabled in order to facilitate deterministic root bridge election under
normal and failure scenarios?
A. GE-3/1, GE-3/2
B. FE-2/1, FE-3/2
C. GE-1/1.GE-1/2
D. GE-4/1, GE-4/2
E. GE-2/1, GE-2/2
F. GE-3/1, GE-3/2, GE-4/1, GE-4/2, FE-2/1, FE-3/2
Answer: F

NO.17 Spanning Tree Protocol calculates path cost based on which of these?
A. interface bandwidth
B. interface delay
C. interface bandwidth and delay
D. hop count
E. bridge priority
Answer: A

NO.18 The classic Spanning Tree Protocol (802.1D 1998) uses which sequence of variables to determine the
best received BPDU?
A. 1) lowest root bridge id,
2) lowest sender bridge id,
3) lowest port id,
4) lowest root path cost
B. 1) lowest root path cost,
2) lowest root bridge id,
3) lowest sender bridge id,
4) lowest sender port id
C. 1) lowest root bridge id,
2) lowest sender bridge id,
3) lowest root path cost
4) lowest sender port id
D. 1) lowest root bridge id,
2) lowest root path cost,
3) lowest sender bridge id,
4) lowest sender port id
Answer: D

NO.19 Which standard supports multiple instances of spanning tree?
A. 802.1D
B. 802.1s
C. 802.1w
D. 802.1z
Answer: B

NO.20 Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree
Protocol IEEE 802.1D.? (Choose two)
A. Designated Root Cost
B. bridge ID priority
C. max age
D. bridge ID MAC address
E. Designated Root Priority
F. forward delay
Answer: BD