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生物间的他感作用主要存在于（)A．种间关系中B．种内关系中C．种内和种间关系中D．种内和种间都不存在

生物间的他感作用主要存在于 ()

A．种间关系中

B．种内关系中

C．种内和种间关系中

D．种内和种间都不存在

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更多“生物间的他感作用主要存在于（)A．种间关系中B．种内关系中C…”相关的问题

第1题

When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network, how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port？（）

A. by snooping the CoS marking on the incoming frames

B. by using RTP hello messages between the switch port and the Cisco IP Phone

C. by using CDP

D. by using DHCP snooping

E. by snooping the incoming 802.1Q VLAN tag

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第2题

As a network administrator, you issue the interface auto qos voip cisco-phone command on a

port in an edge network. It is possible for a Cisco Catalyst switch to check if a Cisco IP Phone is directly attached to that port by:（）

A. using DHCP snooping

B. snooping the incoming 802.1Q VLAN tag

C. using CDP

D. snooping the CoS marking on the incoming frames

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第3题

When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL？（）

A.show ip access-list

B.show access-list

C.list ip interface

D.show interface

E.show ip interface

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第4题

Which three route filtering statements are true？（）

A. After the router ospf 10 and passive - interface s0/0 commands have been issued , the s0/0 interface will not send any OSPF updates, but will receive routing updates on that interface

B. When you use the passive - interface command with RIPv2, multicasts are sent out the specified interface

C. After the router rip and passive -interface s0/0 commands have been issued, the s0/0 interface will not send any RIP updates, but will receive routing updates on that interface

D. When you use the passive - interface command with EIGRP, hel lo messages are not sent out the specified interface

E. After the router eigrp 10 and passive - interface s0/0 commands have been issued, the s0/0 interface will not send any EIGRP updates, but will receive routing updates on that interface

F. When you use the passive - interface command with OSPF, hello messages are not sent out the specified interface

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第5题

A．A

B．B

C．C

D．D

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第6题

You are an administrator of a network that uses PPP for CHAP authentication over ever WAN link. What command would you enter to display the CHAP authentication as it occurs in real time？（）

A. show ppp authentication

B. debug PAP authentication

C. debug PPP authentication

D. show interface serial0

E. show CHAP authentication

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第7题

Which command allows you to view interface usage details in real-time？（）

A.user@host> debug interface interface-name

B.user@host> monitor usage interface-name

C.user@host> monitor interface interface-name

D.user@host> traceoptions interface interface-name

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第8题

Your network contains a single Active Directory domain. All servers run Windows Server 200

8 R2. A DHCP server is deployed on the network and configured to provide IPv6 prefixes.You need to ensure that when you monitor network traffic,you see the interface identifiers derived from the Extended Unique Identifier (EUI)-64 address.Which command should you run？（）

A.netsh.exe interface ipv6 set global addressmaskreply=disabled

B.netsh.exe interface ipv6 set global dhcpmediasense=enabled

C.netsh.exe interface ipv6 set global randomizeidentifiers=disabled

D.netsh.exe interface ipv6 set privacy state=enabled

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第9题

When troubleshooting ATM, which command would allow you to test reachability from one side of an ATM cloud to the other？（）

A.ping atm vci 0.100 interface at-0/1/0 end-to-end

B.ping atm vci 0.100 interface at-0/1/0 circuit

C.ping atm vci 0.100 interface at-0/1/0 far-end

D.ping atm vci 0.100 interface at-0/1/0 final-hop

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