Most IP layer-based proxy mechanisms,such as network address translation (NAT),only supportuni-directional proxy,from the internal network to external network(the Interned.The proxvestablishes the communication channel by (71) IP addresses.The IP addresses must be (72) .These proxy mechanisms prevent applications that must establish return data channels from establishing their data channels,such as,multimedia applications.IP layer-based proxy mechanisms need additional software (73) for each application that uses (74) channels. SOCKS identifies communication targets through domain names,overcoming the restriction of Usina private IP addresses.SOCKS can use domain names to establish communication between separate LANs,with (75) IP addresses.
(66)
A.manufacturing
B.manipulating
C.conduct
D.implement
第1题:
TheBGProutingtableconsistsofthefollowingnetworkroutes:Whatisthecorrectcommandtosummarizetheseprefixesintoasinglesummaryprefixof192.168.12.0/22whilealsoallowingfortheadvertisementofthemorespecificprefixes?()
A.network192.168.12.0mask255.255.252.0
B.network192.168.12.0mask0.0.3.255
C.network192.168.12.0
D.aggregate-address192.168.12.0255.255.252.0
E.aggregate-address192.168.12.0255.255.252.0summary-only
F.aggregate-address192.168.12.0255.255.252.0as-set
第2题:
配置DHCP服务器IP地址池的地址为193.45.98.0/24,其中193.45.98.10~193.45.98.30用做静态地址分配,正确的配置语句是______。
A.ip dhcp excluded-address 193.45.98.10.193.45.98.30 network 193.45.98.0 255.255.255.0
B.ip dhcp excluded-address 193.45.98.10.193.45.98.30 network 193.45.98.0/24
C.ip dhcp excluded-address 193.45.98.10 193.45.98.30 network 193.45.98.0 0.0.0.255
D.ip dhcp excluded-address 193.45.98.10 193.45.98.30 network 193.45.98.0 255.255.255.0
第3题:
配置DHCP服务器IP地址池的地址为193.45.98.0/24,其中193.45.98.10至193.45.98.30用作静态地址分配,正确的配置语句是
A.ip dhcp excluded-address 193.45.98.10,193.45.98.30 network 193.45.98.0 255.255.255.0
B.ip dhcp excluded-address 193.45.98.10,193.45.98.30 network 193.45.98.0 /24
C.ip dhcp excluded-address 193.45.98.10 193.45.98.30 network 193.45.98.0 0.0.0.255
D.ip dhcp excluded-address 193.45.98.10 193.45.98.30 network 193.45.98.0 255.255.255.0
第4题:
A.admin,operator,network-admin,andnetwork-operator
B.admin,read-only,network-admin,andnetwork-operator
C.vdc-admin,vdc-operator,network-admin,andnetwork-operator
D.vdc-admin,vdc-operator,network-admin,andnetwork-operator(forNexus7000)andnetwork-adminandnetwork-operator(forotherNexusswitches)
E.adminandread-only
第5题:
在某台Cisco路由器中定义一个名为test的DHCP地址池(192.168.3.0/26),并保留192.168.3.62/29的IP地址。下列正确的配置语句是(29)。
A.Router(config)#ip dhcp pooltest Router(dhcp-config)#network 192.168.3.00.0.0.63 Router(dhcp-config)#ip dhcp excluded-address192.168.3.62
B.Router(config)#ip dhcp poo1 test Router(dhcp-config)#network 192.168.3.0255.255.255.192 Router(dhcp-config)#ip dhcp excluded-address 192.168.3.62255.255.255.248
C.Router(config)#ip dhcp poo1 test Router(dhcp-config)#network 192.168.3.0/26 Router(dhcp-config)#ip dhcp excluded-address 192.168.3.62/29
D.Router(config)#ip dhcp excluded-address 192.168.3.56192.168.3.62 Router(config)#ip dhcp pool test Router(dhcp-config)#network 192.168.3.0/26
第6题: