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What is a key benefit of using a GRE tunnel to provide conne

题目
单选题
What is a key benefit of using a GRE tunnel to provide connectivity bet ween branch offices and headquarters?（）
A

authentication, integrity checking, and confidentiality

B

less overhead

C

dynamic routing over the tunnel

D

granular QoS support

E

open standard

F

scalability

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相似问题和答案

第1题：

In which tunnel－less VPN topology do group members register with a key server in order to receive the security association necessary to communicate with the group?()

A. Easy VPN

B. GRE tunneling

C. Virtual Tunnel Interfaces

D. DynamicMultipoint VPN

E. Group Encrypted Transport VPN


参考答案：E

第2题：

What are the benefit of using Netflow?()

A.Network, Application & User Monitoring

B.Network Planning

C.Security Analysis

D.Accounting/Billing


参考答案：A, C

第3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4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, and into the core of an Enterprise network. The branch also allows local hosts to communicate directly with public sites in th e Internet over this same DSL connection. Which of the following answers defines how the branch NAT config avoids performing NAT for the Enterprise directed traffic but does perform NAT for the Internet - directed traffic?（）

  • A、By not enabling NAT on the I Psec tunnel interface
  • B、By not enabling NAT on the GRE tunnel interface
  • C、By configuring the NAT - referenced ACL to not permit the Enterprise traffic
  • D、By asking the ISP to perform NAT in the cloud

正确答案:C

第5题：

What are the default values for GRE tunnel keeplive time and number of retries？（）

  • A、5 seconds and 3 retries
  • B、10 seconds and 5 retries
  • C、10 seconds and 3 retries
  • D、20 seconds and 5 retries
  • E、5 seconds and 5 retries

正确答案:C

第6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7题：

In which tunnel-less VPN topology do group members register with a key server in order to receivethe security association necessary to communicate with the group？（）

  • A、 Easy VPN
  • B、 GRE tunneling
  • C、 Virtual Tunnel Interfaces
  • D、 Dynamic Multipoint VPN
  • E、 Group Encrypted Transport VPN

正确答案:E

第8题：

What is a key benefit of using a GRE tunnel to provide connectivity bet ween branch offices and headquarters?()

A. authentication, integrity checking, and confidentiality

B. less overhead

C. dynamic routing over the tunnel

D. granular QoS support

E. open standard

F. scalability


参考答案：C

第9题：

When configuring a multipoint GRE （mGRE） tunnel interface， which one of the following is NOT a valid configuration option：（）

  • A、 tunnel source
  • B、 tunnel destination
  • C、 tunnel key
  • D、 ip address
  • E、 tunnelvrf

正确答案:B

第10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

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