What is a key benefit of using a GRE tunnel to provide connectivity bet ween branch offices and headquarters?() A. authentication, integrity checking, and confidentialityB. less overheadC. dynamic routing over the tunnelD. granular QoS supportE. open standardF. scalability
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
相关考题：
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 interfaceB. When routing the packet, matching a route whose outgoing interface is the GRE tunnel interfaceC. When routing the packet, matching a route whose outgoing interface is the IPsec tunnel interfaceD. When permitted by an ACL that was referenced in the associated crypto map
Router R1 sits at an Enterprise branch office, using the Internet for its only connectivity back to the rest of the EnterprisE.Which of the following is not a ben efit of using an IPsec tunnel for packets sent through the Internet, between R1 and the rest of the Enterprise?（）A. PrivacyB. AuthenticationC. Allows using an IGP between R1 and the EnterpriseD. Secure communications
Refer to the exhibit. Which interoperability technique implemented on the dual - stack routers would allow connectivity between IPv6 sites across automatic created tunnels using the 2002::/16 prefix? （）A. Dual StackB. NAT - PTC. 6to4 tunnelD. GRE tunnelE. ISATAP tunnel
Which two methods use IPsec to provide secure connectivity from the branch office to the headquarters office?() A. DMVPNB. MPLS VPNC. Virtual Tunnel Interface (VTI)D. SSL VPNE. PPPoE
Which two methods use IPsec to provide secure connectivity from the branch office to the headquarters office?（）A、DMVPNB、MPLS VPNC、Virtual Tunnel Interface (VTI)D、SSL VPNE、PPPoE
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 interfaceB、By not enabling NAT on the GRE tunnel interfaceC、By configuring the NAT - referenced ACL to not permit the Enterprise trafficD、By asking the ISP to perform NAT in the cloud
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 numberB、The IPSEC mode （tunnel or transport）C、The GRE tunnel interface IP addressD、The GRE tunnel source interface or IP address， and tunnel destination IP addressE、The MTU size of the GRE tunnel interface
Router R1 sits at an Enterprise branch office, using both the Internet and a leased line to another Enterprise router for its two connectivity options back into the rest of the Enterprise network. The engineer planning for this branch decided to use the leased line for all Enterprise traffic, unless it fails, in which case the Internet connection should be used to pass traffic to the Enterprise. Which of the following is most likely to be useful on the branch router?（）A、IPsec tunnelB、GRE tunnelC、Floating stati c routeD、An IGP
TestKing has five regional offices that are located in different cities. The IT staff is evaluating WAN technologies to interconnect the regional offices to corporate headquarters. Each of the regional offices should be connected to the corporate headquarters in a hub and spoke arrangement using a packet-switched technology. Which of the following WAN technologies will fulfill these requirements?（）A、Frame RelayB、ISDNC、T1 leased linesD、Wireless
What is a key benefit of using a GRE tunnel to provide connectivity bet ween branch offices and headquarters?（）A、authentication, integrity checking, and confidentialityB、less overheadC、dynamic routing over the tunnelD、granular QoS supportE、open standardF、scalability
What are four advantages to using tunnel brokers in an IPv6 transition environment?（）A、Tunnel brokers automatically provide configuration parameters to peer routers.B、IPv6 enabling a node looks automatic to the end user.C、Tunnel information is sent via IPv4.D、Tunnel brokers make it simpler for nontechnical users to deploy manual tunnels.
What are the header sizes for point-to-point and multi-point GRE（also known asmGRE） with tunnel key？（）A、 4 bytes for bothB、 4 bytes， and 8 bytes respectivelyC、 8 bytes for bothD、 24 bytes for both
our company has a main office and 15 branch offices. The company has a single active directory domain. All servers run windows server 2008.You need to ensure that the VPN connections between the office and the branch offices meet the following requirements:All data must be encrypted by using end-to-end encryption.The vpn connection must use computer-level authentication.User names and passwords cannot be used for authentication.What should do?（）A、Configure an ipsec connection to use tunnel mode and preshared key authentication.B、Configure a PPTP connection to use version 2 of the MS-CHAP v2 authentication.C、Configure a L2TP/IPsec connection to use the EAP-TLS authentication.D、Configure a L2TP/IPsec connection to use version 2 of the MS-CHAP v2 authentication.
Your company has a main office and two branch offices.Domain controllers in the main office host an Active Directory-integrated zone.The DNS servers in the branch offices host a secondary zone for the domain and use the main office DNS servers as their DNS Master servers for the zone.The company adds a new branch office. You add a member server named Branch3 and install the DNS Server server role on the server. You configure a secondary zone for the domain. The zone transfer fails.You need to configure DNS to provide zone data to the DNS server in the new branch office.What should you do？（）A、Run dnscmd by using the ZoneResetMasters option.B、Run dnscmd by using the ZoneResetSecondaries option.C、Add the new DNS server to the Zone Transfers tab on one of the DNS servers in the main office.D、Add the new DNS server to the DNSUpdateProxy Global security group in Active Directory Users and Computers.
You are designing a strategy to optimize the DNS name resolution for the satellite offices that connect to the branch offices by using ISDN lines. What should you do?（）A、Use caching-only DNS servers at these satellite offices.B、Configure a Hosts file for all client computers at these satellite offices.C、Configure a DNS server to use WINS forward lookup at these satellite offices.D、Place a DNS server with secondary zones of all domains at these satellite offices.
单选题You are designing a strategy to optimize the DNS name resolution for the satellite offices that connect to the branch offices by using ISDN lines. What should you do？（）A Use caching-only DNS servers at these satellite offices.B Configure a Hosts file for all client computers at these satellite offices.C Configure a DNS server to use WINS forward lookup at these satellite offices.D Place a DNS server with secondary zones of all domains at these satellite offices.
单选题Router R1 sits at an Enterprise branch office, using the Internet for its only connectivity back to the rest of the EnterprisE. Which of the following is not a ben efit of using an IPsec tunnel for packets sent through the Internet, between R1 and the rest of the Enterprise?（）APrivacyBAuthenticationCAllows using an IGP between R1 and the EnterpriseDSecure communications
多选题Which two methods use IPsec to provide secure connectivity from the branch office to the headquarters office?（）ADMVPNBMPLS VPNCVirtual Tunnel Interface (VTI)DSSL VPNEPPPoE
多选题Your company has a single active directory domain. The company has a main office and three branch offices. The domain controller in the main office runs windows 2008 server and provides DNS for the main office and all of the branch offices.Each branch office runs windows server 2008. Users in the branch offices report that it takes a long time to access network resources. You confirm that there are no problems with WAN connectivity or bandwidth. You need to ensure that users in the branch offices are able to access network resources as quickly as possible. Which two actions should you perform? （）AConfigure a standard primary zone in each of the branch offices.BConfigure a forwarders that point to the DNS server in the main office.CConfigure a secondary zone in each of the branch offices that users the main office DNS server as a master.DInstall DNS servers in each of the branch offices.
多选题Your company has a single Active Directory domain.The company has a main office and three branch offices. The domain controller in the main office runs Windows Server 2008 R2 and provides DNS for the main office and all of the branch offices. Each branch office contains a file server that runs Windows Server 2008 R2.Users in the branch offices report that it takes a long time to access network resources. You confirm that there are no problems with WAN connectivity or bandwidth.You need to ensure that users in the branch offices are able to access network resources as quickly as possible.Which two actions should you perform？（）AConfigure a standard primary zone in each of the branch offices.BConfigure forwarders that point to the DNS server in the main office.CConfigure a secondary zone in each of the branch offices that uses the main office DNS server as a master.DInstall DNS servers in each of the branch offices.
单选题You are designing an OU structure for IT staff at the branch offices. What should you do?（）ACreate an OU for the NewApp Web servers. Assign the IT staff at the branch offices user rights to this OU.BCreate an OU for the NewApp data servers. Assign the IT staff at the branch offices user rights to this OU.CCreate an OU for the IT staff at each branch office. Place network administrators at the branch offices in these OUs.DCreate an OU for each branch office. Place local servers in the OU for their respective office. Assign the IT staff at the branch offices user rights to these OUs.
多选题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？（）AThe crypto ACL numberBThe IPSEC mode （tunnel or transport）CThe GRE tunnel interface IP addressDThe GRE tunnel source interface or IP address， and tunnel destination IP addressEThe MTU size of the GRE tunnel interface
多选题What is a key characteristic of the Cisco Business Ready Teleworker solution which is different from traditional software-client based Teleworker solutions?（）Aall traffic is encrypted using IPSec and the Triple-DES algorithmBfull support for all Enterprise applications, including data, voice, and videoCthousands of Teleworker VPN tunnels can be aggregated to a headquarters locationDthe VPN tunnel is an always on site-to-site VPN connectionEportability for use while travelingFused with broadband Cable/DSL subscriptions
单选题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?（）AWhen the packet received on the LAN interface is permitted by the ACL listed on the tunnel greacl command under the incoming interfaceBWhen routing the packet, matching a route whose outgoing interface is the GRE tunnel interfaceCWhen routing the packet, matching a route whose outgoing interface is the IPsec tunnel interfaceDWhen permitted by an ACL that was referenced in the associated crypto map
单选题What are the header sizes for point-to-point and multi-point GRE（also known asmGRE） with tunnel key？（）A 4 bytes for bothB 4 bytes， and 8 bytes respectivelyC 8 bytes for bothD 24 bytes for both
单选题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?（）ABy not enabling NAT on the I Psec tunnel interfaceBBy not enabling NAT on the GRE tunnel interfaceCBy configuring the NAT - referenced ACL to not permit the Enterprise trafficDBy asking the ISP to perform NAT in the cloud
单选题What is a key benefit of using a GRE tunnel to provide connectivity bet ween branch offices and headquarters?（）Aauthentication, integrity checking, and confidentialityBless overheadCdynamic routing over the tunnelDgranular QoS supportEopen standardFscalability