多項選擇題Which three statements about RSTP are true?()

A.RSTP significantly reduces topology reconverging time after a link failure.
B.RSTP expends the STP port roles by adding the alternate and backup roles.
C.RSTP port atates are blocking,discarding,learing,or forwarding.
D.RSTP also uses the STP proprsal-agreement sequence.
E.RSTP use the same timer-baseed process as STP on point-to-point links.
F.RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.


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1.多項選擇題Cisco終端安全解決方案的首要組件有()

A.IronPort
B.Cisco NAC
C.SAN
D.CSA

2.多項選擇題What are two benefits of using NAT?()

A.NAT protects network security because private networks are not advertised.
B.NAT accelerates the routing process because no modifications are made on the packets.
C.Dynamic NAT facilitates connections from the outside of the network.
D.NAT facilitates end-to-end communication when IPsec is enable.
E.NAT eliminates the need to re-address all host that require extemal access.
F.NAT conserves addresses through host MAC-level multiplexing.

3.單項選擇題

Refer to the exhibit.Why are two OSPF designated routers designated routers identified on Core-Router?()

A.Core-Router is connected more than one multi-access network
B.The router at 208.149.23.130 is a secondary DR in case the primary fails.
C.Two router IDs have the same OSPF priority and are therefore tied for DR election
D.The DR ecection is still underway and there are two contenders for the role

4.多項選擇題防護終端的操作系統(tǒng)隱患有()技術(shù)

A.最小特權(quán)觀念
B.進程之間的隔離
C.標(biāo)準(zhǔn)檢測器
D.小的、可驗證的代碼塊

5.多項選擇題Cisco部署終端安全的策略基于() 成分

A.Cisco網(wǎng)絡(luò)準(zhǔn)入控制
B.終端保護
C.網(wǎng)絡(luò)感染遏制
D.CSA

6.單項選擇題A network administrator receives an error message while tring to configure the Ethernet interface of arouter with IP address 10.24.24.24/29.which statement explains the reason for this issue?()

A.The address is a broadcast address
B.The Ehernet interface is faulty
C.VLSM-capable routing protocols must be enable first on the router.
D.This address is a network address.

7.多項選擇題下列哪些屬于第二層安全配置()

A.啟用端口安全
B.跟橋保護
C.廣播風(fēng)暴控制
D.Cisco安全端口分析器

8.單項選擇題Which IPV6 routing protocol uses multicast group FF02::9 to send updates?()

A.RIPng
B.OSPFv3
C.static
D.IS-IS for IPv6

9.多項選擇題Why do large OSPF networks use a hierarchical design?()

A.to confine network instability to single areas of the network.
B.to reduce the complexity of router configuration.
C.to speed up convergence.
D.to lower costs by replacing routers with distribution layer switches.
E.to decrease latency by increasing bandwidth.
F.to reduce routing overhead.

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