2010년 4월 30일부터 CCNP를 따기 위한 과목중 하나인 Tshoot과목이 시작되었다.
덤프를 아무리 찾아보려고 해도 찾을 수 없고 기존의 베타버전의 덤프만 존재하는데 그 덤프만이라도 뽑아서 정리해보고자 한다.
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1. Which of the following characteristics describe the BPDU Guard featuer? (Choose all that apply.)
a. A BPDU Guard port should only be configured on ports with PortFast enabled.
b. BPDU Guard and PortFast should not be enabled on the same port.
c. BPDU Guard is used to ensure that superior BPDUs are not received on a swith port.
d. A BPDU Guard port receiving a BPDU will go into err-disable state.
e. A BPDU Guard port receiving a BPDU will be disabled.
f. BPDU Guard can be enabled on any switch port.
BPDU Guard는 PortFast가 설정된 포트에서만 작동되므로 a가 답이 된다. 또한 BPDU Guard는 BPDU를 받을때 disable되므로 e가 정답이 된다.
다음은 BPDU Guard에 대한 내용을 시스코 프레스에서 발췌하였다.
The BPDU Guard feature is enabled on ports configured with Cisco's PortFast feature. The PortFast feature is enabled on ports that connect out to end-user devices, such as PCs, and it reduces the amount of time required for the port to go into the forwarding state after being connected. The logic of PortFast is that a port that connects to an end-user device does not have the potential to create a topology loop. Therefre, the port can go active sooner by skipping STP's Listening and Learning states, which by default take 15 seconds each. Because these PortFast ports are connected to end-user devices, there ports should never receive a BPDU. Therefore, if a port enabled for BPDU Guard receives a BPDU, the port is disabled.
쉽게 설명하면 BPDU를 통해서 Spanning-tree의 값을 정하게 되는데 이러한 프로세스를 생략해주는 것이 BPDU Guard라고 생각하면 이해가 쉬울 것이다.
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2. Which of the following are valid modes of accessing the data plane? (choose all that apply.) a. Serial connection b. Secure Shell c. RADIUS d. Simple Network Management Protocol e. HTTP f. Telnet RADIUS는 authentication서버이므로 다음의 질문에 상관이 없다.
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3. Which ofo the following is not an essential prerequisite for AutoQoS to be correctly applied to an interface? (choose all that apply) a. The interface must be configured as a Multilink PPP interface b. The correct bandwidth should be configured on the interface. c. A QoS policy must not be currently attached to the interface. d. CEF must be enabled. e. AutoQoS must be enabled globally before it can be enabled on the itnerface. f. An IP address must be configured on the interface if its speed is equal to or less than 768 kbps. AutoQoS는 interface에 설정되므로 e가 틀린 답이다. Multilink PPP interface는 AutoQoS에서는 불필요하다.
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4. Which of the following topology situations would be a good candidate for configuring DMVPN?
a. extranet VPN
b. Managed overlay VPN topology
c. Hub-and spoke VPN topology
d. Central-site VPN topology
e. Full mesh VPN topology
f. remote-access VPN topology
다음은 시스코프레스에서 발췌한 부분이다.
Rather than creating a full mesh of VPN connectionso vetween all sites in an enterprise network, you can alternatively use Dynamic Multipoint VPN (DMVPN) technology. DMVPN allows VPN connectinos to be dynamically created on an as-needed basis.
DMVPN solution overcomes the performance issues of a hub-and spoke topology, while simultaneously overcoming the scalability issues presented by a full mesh topoloty.
그래서 답은 full messh VPN topology이다.
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5. Which of the following is not considered a common approach to narrow the field of potential problem causes? (choose teh best answer.)
a. Following the traffic path
b. Top-down
c. Comparing configurations
d. Bottom-up
e. Divide and conquer
f. Examine SLAs
Narrow the field of potential causes는 다음과 같다.
Top-Down / Bottom-Up / Divide and Conquer Method / Following the Traffic Path / Comparing Configurations / Component Swapping
그래서 답은 f이다. 참고로 SLA는 Service-Level Agreement의 약어이다.
덤프를 아무리 찾아보려고 해도 찾을 수 없고 기존의 베타버전의 덤프만 존재하는데 그 덤프만이라도 뽑아서 정리해보고자 한다.
1. Which of the following characteristics describe the BPDU Guard featuer? (Choose all that apply.)
a. A BPDU Guard port should only be configured on ports with PortFast enabled.
b. BPDU Guard and PortFast should not be enabled on the same port.
c. BPDU Guard is used to ensure that superior BPDUs are not received on a swith port.
d. A BPDU Guard port receiving a BPDU will go into err-disable state.
e. A BPDU Guard port receiving a BPDU will be disabled.
f. BPDU Guard can be enabled on any switch port.
BPDU Guard는 PortFast가 설정된 포트에서만 작동되므로 a가 답이 된다. 또한 BPDU Guard는 BPDU를 받을때 disable되므로 e가 정답이 된다.
다음은 BPDU Guard에 대한 내용을 시스코 프레스에서 발췌하였다.
The BPDU Guard feature is enabled on ports configured with Cisco's PortFast feature. The PortFast feature is enabled on ports that connect out to end-user devices, such as PCs, and it reduces the amount of time required for the port to go into the forwarding state after being connected. The logic of PortFast is that a port that connects to an end-user device does not have the potential to create a topology loop. Therefre, the port can go active sooner by skipping STP's Listening and Learning states, which by default take 15 seconds each. Because these PortFast ports are connected to end-user devices, there ports should never receive a BPDU. Therefore, if a port enabled for BPDU Guard receives a BPDU, the port is disabled.
쉽게 설명하면 BPDU를 통해서 Spanning-tree의 값을 정하게 되는데 이러한 프로세스를 생략해주는 것이 BPDU Guard라고 생각하면 이해가 쉬울 것이다.
----------------------------------------------------------------------------------------
2. Which of the following are valid modes of accessing the data plane? (choose all that apply.) a. Serial connection b. Secure Shell c. RADIUS d. Simple Network Management Protocol e. HTTP f. Telnet RADIUS는 authentication서버이므로 다음의 질문에 상관이 없다.
----------------------------------------------------------------------------------------
3. Which ofo the following is not an essential prerequisite for AutoQoS to be correctly applied to an interface? (choose all that apply) a. The interface must be configured as a Multilink PPP interface b. The correct bandwidth should be configured on the interface. c. A QoS policy must not be currently attached to the interface. d. CEF must be enabled. e. AutoQoS must be enabled globally before it can be enabled on the itnerface. f. An IP address must be configured on the interface if its speed is equal to or less than 768 kbps. AutoQoS는 interface에 설정되므로 e가 틀린 답이다. Multilink PPP interface는 AutoQoS에서는 불필요하다.
----------------------------------------------------------------------------------------
4. Which of the following topology situations would be a good candidate for configuring DMVPN?
a. extranet VPN
b. Managed overlay VPN topology
c. Hub-and spoke VPN topology
d. Central-site VPN topology
e. Full mesh VPN topology
f. remote-access VPN topology
다음은 시스코프레스에서 발췌한 부분이다.
Rather than creating a full mesh of VPN connectionso vetween all sites in an enterprise network, you can alternatively use Dynamic Multipoint VPN (DMVPN) technology. DMVPN allows VPN connectinos to be dynamically created on an as-needed basis.
DMVPN solution overcomes the performance issues of a hub-and spoke topology, while simultaneously overcoming the scalability issues presented by a full mesh topoloty.
그래서 답은 full messh VPN topology이다.
-----------------------------------------------------------------------------------------
5. Which of the following is not considered a common approach to narrow the field of potential problem causes? (choose teh best answer.)
a. Following the traffic path
b. Top-down
c. Comparing configurations
d. Bottom-up
e. Divide and conquer
f. Examine SLAs
Narrow the field of potential causes는 다음과 같다.
Top-Down / Bottom-Up / Divide and Conquer Method / Following the Traffic Path / Comparing Configurations / Component Swapping
그래서 답은 f이다. 참고로 SLA는 Service-Level Agreement의 약어이다.
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