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Which two mechanisms can be used to detect IPsec GRE tunnel 

题目
多选题
Which two mechanisms can be used to detect IPsec GRE tunnel failures？（）
A

Dead Peer Detection （DPD）

B

CDP

C

isakmp keepalives

D

GRE keepalive mechanism

E

The hello mechanism of the routing protocol across the IPsec tunnel

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相似问题和答案

第1题：

Which of the following protocols would MOST likely be used in the establishment of an IPSec VPN tunnel?()

A. AES

B. TKIP

C. 802.1q

D. ISAKMP


参考答案：A

第2题：

An engineer is reviewing another engineer‘s sample configuration for a GRE tunnel used to pass IPv6 traffiC. The tunnel ha s not yet been configured on the router.Which of the following commands is not required for the configuration to pass IPv6 traffic?（）

A. tunnel source

B. tunnel destination

C. tunnel mode

D. All these commands are requireD


参考答案：C

第3题：

Which two statements are true about the RMAN validate database command?()

A. It checks the database for intrablock corruptions.

B. It can detect corrupt pfiles.

C. It can detect corrupt spfiles.

D. It checks the database for interblock corruptions.

E. It can detect corrupt block change tracking files.


参考答案：A, C

第4题：

You need to configure a GRE tunnel on a IPSec router. When you are using the SDM to configurea GRE tunnel over IPsec， which two parameters are required when defining the tunnel interfaceinformation？（）

  • A、The crypto ACL number
  • B、The IPSEC mode （tunnel or transport）
  • C、The GRE tunnel interface IP address
  • D、The GRE tunnel source interface or IP address， and tunnel destination IP address
  • E、The MTU size of the GRE tunnel interface

正确答案:C,D

第5题：

Two islands of IPv6 networks that are running ISIS （IPv6 IGP） must be connected using a tunnel over anIPv4 network. Which tunneling method can be used to achieve this goal？（）

  • A、GRE tunnels
  • B、automatic 6 to 4 tunnels
  • C、ISATAP tunnels
  • D、manual tunnels （RFC 2893）

正确答案:A

第6题：

Router R1, a branch router, connects to the Internet using DSL. Some traffic flows through a GRE and IPsec tunnel, over the DSL connection, destined for an Enterprise network.Which of the following answers best describes the router‘s logic that tells the router, for a given packet, to apply GRE encapsulation to the packet?（）

A. When the packet received on the LAN interface is permitted by the ACL listed on the tunnel greacl command under the incoming interface

B. When routing the packet, matching a route whose outgoing interface is the GRE tunnel interface

C. When routing the packet, matching a route whose outgoing interface is the IPsec tunnel interface

D. When permitted by an ACL that was referenced in the associated crypto map


参考答案：B

第7题：

To securely transport EIGRP traffic, a network administrator will build VPNs between sites. What is the best method to accomplish the transport of EIGRP traffic?()

A. IPSec in tunnel mode

B. IPSec in transport mode

C. GRE with IPSec in transport mode

D. GRE with IPSec in tunnel mode


参考答案：C

第8题：

Which encryption type is used to secure user data in an IPsec tunnel?()

A. symmetric key encryption

B. asymmetric key encryption

C. RSA

D. digital certificates


参考答案：A

第9题：

Which two mechanisms can be used to detect IPsec GRE tunnel failures？（）

  • A、Dead Peer Detection （DPD）
  • B、CDP
  • C、isakmp keepalives
  • D、GRE keepalive mechanism
  • E、The hello mechanism of the routing protocol across the IPsec tunnel

正确答案:A,E

第10题：

What is not a difference between VPN tunnel authentication and per-user authentication?（）

  • A、VPN tunnel authentication is part of the IKE specification. 
  • B、VPN tunnel authentication does not control which end user can use the IPSec SA (VPN tunnel).
  • C、User authentication is used to control access for a specific user ID, and can be used with or without a VPN tunnel for network access authorization. 
  • D、802.1X with EAP-TLS (X.509 certificates) can be used to authenticate an IPSec tunnel.

正确答案:D

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