单项选择题

A. a single hostB. a subset of hostsC. all hosts sequen……

To which of these does IP multicast send packets？（）

A. a single host
B. a subset of hosts
C. all hosts sequentially
D. all hosts simultaneously

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热门试题

单项选择题Whichoftheseportsdoessyslogusetosendmessagestoasyslogserver？（）

A. TCP 502
B. TCP 514
C. TCP 520
D. UDP 502
E. UDP 514
F. UDP 520

单项选择题WhichoftheseisabenefitofESM？（）

A. supports multiple MIBs
B. includes NetFlow， NBAR， and IP SLA software subsystems
C. includes NetFlow， syslog， and IP SLA software subsystems
D. includes a predefined framework for filtering and correlating messages
E. supports two logging processes so output can be sent in standard and ESM format

单项选择题WhichoftheseisaLayer2transportarchitecturethatprovidespacket-basedtransmission optimizedfordatabasedonadual（counter-rotating）ringtopology？（）

A. DTP
B. RPR
C. SDH
D. CWDM
E. DWDM

单项选择题OneofyourcustomerswishestousetheNAStoperformDHCPfunctionsanddoesnotcurrently haveaLayer3gatewayinitsproductionnetwork.Whichgatewaymodeisappropriateforthis customer？（）

A. Virtual Gateway
B. Real-IP Gateway
C. NAT Gateway
D. IP-IP Gateway

单项选择题YourMPLSimplementationiscurrentlyusinginternalbackdoorlinks.Whatcanyoudotominimize theimpactofhavingtheselinks？（）

A. use BGP as the CE-PE routing protocol
B. use OSPF as the CE-PE routing protocol
C. use EIGRP as the CE-PE routing protocol
D. use the SP to redistribute routes as external routes for OSPF and EIGRP
E. use route redistribution at each location to ensure external routes are imported into the IGP