Refer to the exhibit. An administrator pings the default gateway at 10.10.10.1 and sees the output as shown. At which OSI layer is the problem?（）
A.data link layer
B.application layer
C.access layer
D.session layer
E.network layer
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A.外部主機(jī)202.38.0.50可以PING通任何內(nèi)部主機(jī)
B.內(nèi)部主機(jī)10.10.10.5，可任意訪問(wèn)外部網(wǎng)絡(luò)資源
C.內(nèi)部任意主機(jī)都可以與外部任意主機(jī)建立TCP連接
D.外部202.38.5.0/24網(wǎng)段主機(jī)可以與此內(nèi)部網(wǎng)主機(jī)TCP連接
E.外部202.38.0.0/24網(wǎng)段主機(jī)不可以與此內(nèi)部同主機(jī)建立目標(biāo)端口號(hào)大于1024的TCP連接
Refer to the exhibit. Which command would allow the translations to be created on the router?（）
A.ip nat pool mynats 1.1.128.1 1.1.135.254 prefix-length 19
B.ip nat outside mynats 1.1.128.1 1.1.135.254 prefix-length 19
C.ip nat pool mynats 1.1.128.1 1.1.135.254 prefix-length 18
D.ip nat outside mynats 1.1.128.1 1.1.135.254 prefix-length 18
A.IR
B.DSSS
C.FHSS
D.DSSS and FHSS
E.IR, FHSS, and DSSS
A.It designates VLAN 999 for untagged traffic.
B.It blocks VLAN 999 traffic from passing on the trunk.
C.It creates a VLAN 999 interface.
D.It designates VLAN 999 as the default for all unkown tagged traffic.
Refer to the exhibit. What can be determined about the router from the console output?（）
A.No configuration file was found in NVRAM.
B.No configuration file was found in flash.
C.No configuration file was found in the PCMCIA card.
D.Configuration file is normal and will load in 15 seconds.
A.172.1.0.0/22
B.172.1.0.0/21
C.172.1.4.0/22
D.172.1.4.0/24 172.1.5.0/24 172.1.6.0/24 172.1.7.0/24
E.172.1.4.0/25 172.1.4.128/25 172.1.5.0/24 172.1.6.0/24 172.1.7.0/24
A.VLAN 1 is the default Ethernet VLAN.
B.CDP advertisements are only sent on VLAN 1002.
C.By default, the management VLAN is VLAN 1005.
D.By default, the switch IP address is in VLAN 1005.
E.VLAN 1002 through 1005 are automatically created and cannot be deleted.
The user of Host1 wants to ping the DSL modem/router at 192.168.1.254. Based on the Host1 ARP table that is shown in the exhibit, what will Host1 do（）。
A.send a unicast ARP packet to the DSL modem/router
B.send unicast ICMP packets to the DSL modem/router
C.send Layer 3 broadcast packets to which the DSL modem/router responds
D.send a Layer 2 broadcast that is received by Host2, the switch, and the DSL modem/router
A.It converges quickly.
B.OSPF is a classful routing protocol.
C.It uses cost to determine the best route.
D.It uses the DUAL algorithm to determine the best route.
E.OSPF routers send the complete routing table to all directly attached routers.
F.OSPF routers discover neighbors before exchanging routing information.
A.Router R2 will not form a neighbor relationship with R1.
B.Router R2 will obtain a full routing table, including a default route, from R1.
C.R2 will obtain OSPF updates from R1, but will not obtain a default route from R1.
D.R2 will not have a route for the directly connected serial network, but all other directly connected
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