单项选择题

When is an IPSec SA built on the Teleworker Router?（）

A.when the router is booted up
B.when the router administratively does a no shutdown" on the IPSec SA
C.when traffic matches a line of the access-list tied into the crypto-map in the router configuration, and that particular IPSec SA is not already up
D.when the ISAKMP SA completes negotiation of all IPSec SAs (one per access-list line in the crypto ACL), it will be brought up immediately

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热门试题

单项选择题AcustomerwantstodeploytheCiscoBusinessReadyTeleworkersolution,butiscurrentlyusingatraditional(non-IP)PBXforvoiceservices.Whatwouldyourecommendtothiscustomer?（）

A.Deployment of Business Ready Teleworker with VoIP is not recommended.
B.The customer’s existing PBX must first be replaced with Cisco IP Telephony solution.
C.Business Ready Teleworker and Cisco IP Telephony can be deployed in parallel to the existing PBX， integrating the two with trunking.
D.Deployment is recommended only for full-time Teleworkers who have no other corporate phone.

单项选择题WhatisnotadifferencebetweenVPNtunnelauthenticationandper-userauthentication?（）

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.

单项选择题Context-BasedAccessControl(CBAC)isthealgorithmoftheCiscoIOSfirewallfeature.HowdoesCBACimproveTeleworkersecurity?（）

A.Inbound packets are permitted only if they are part of a legitimate data flow initiated by a device on the Teleworker home network.
B.All packets are checked for integrity by analyzing their checksum.
C.Every packet is checked to see if it was sent through the VPN tunnel.
D.Every packet is inspected to see if any disallowed URLs are included. URLs are forwarded to the security cache engine for authorization.

单项选择题Refer to the exhibit. Given the interface configuration on a DSL connection with PPPoE, select the true statement.（）

A.The router is limiting the size of TCP and UDP packets.
B.The configuration implements an effective Layer-2 fragmentation technique.
C.The value of 542 is recommended in several RFCs.
D.There is another upstream router terminating the PPPoE session.

多项选择题ForEthernet-to-Ethernetrouters,suchastheCisco831behindacablemodemorDSLbridge,atrafficshaperisconfigured.Thisisrequiredsincetheoutput10-Mbpsinterfacewillnotbecongested.Whichtwostatementsaretrue?（）

A.The parent policy-map shapes and the child policy-map queues.
B.The mean-rate and burst-size must always be the same value.
C.This will not work without a Dialer interface configured.
D.The shaper provides congestion feedback.