单项选择题

It’s a configuration that experts are calling a "firewall sandwich，" with the second firewall providinga second level of load balancing after traffic down. What is meant by the term "firewall sandwich"？（）

A. single layer of firewalling
B. multiple layers of firewalling
C. firewall connections in either an active or standby state
D. an architecture in which all traffic between firewalls goes through application-specific servers

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热门试题

单项选择题LafeyetteProductionsislookingforanewISPthathasimprovedavailability，load balancing，andcatastropheprotection.WhichtypeofISPconnectivitysolutionwouldbebest？（）

A. single run
B. multi-homed
C. stub domain EBGP
D. direct BGP peering

单项选择题YouaretheCiscoNetworkDesignerinCisco.com.WhichstatementiscorrectregardingNBARandNetFlow？（）

A. NBAR examines data in Layers 1 and 4.
B. NBAR examines data in Layers 3 and 4.
C. NetFlow examines data in Layers 3 and 4.
D. NBAR examines data in Layers 2 through 4.

多项选择题Usersofasite-to-siteVPNarereportingperformanceproblems.TheVPNconnectionemploysIPSecandGREandtraversesseveralEthernetsegments.TheVPNpacketsarebeing fragmentedastheytraversethelinks.Whatwouldbetwomethodstoovercomethisproblem？（）

A. Employ path MTU discovery.
B. Set the MTU higher than 1500 bytes.
C. Turn off pre-fragmentation for IPSec.
D. Set the MTU value to 1400 bytes.

单项选择题YouaretheCiscoNetworkDesignerinCisco.com.Whichofthesestatementsistrueofclientlessend-userdevices？（）

A. They do not receive unique IP addresses.
B. RADIUS or LDAP is required.
C. They are assigned addresses from the internal DHCP pool.
D. Their traffic appears to originate from the originating host network.

多项选择题WhataretwodesignguidelinesforVoIPnetworks？（）

A. Delay should be no more than 10 ms.
B. Loss should be no more than 1 percent.
C. Jitter should be less then 40 ms.
D. Managed bandwidth is strongly recommended for voice control traffic.