Which of the following descriptions about OSPF's Dpackets and LSA. is correct ()*
A. The header of an LSA can uniquely identify an LSA
B. The LSA header is only a small part of the LSA
C. The DD packet contains the detailed information of the LSA
D. DD packets only contain the header information of LSA
The administrator cannot log in to the Huawei router through Telnet, but other administrators can log in normally, so which of the following are the possible reasons? ()*
A. The authority level of the administrator user account has been modified to 0
B. The administrator user account has been disabled
C. The Te1net service of the AR2200 router has been disabled
D. The administrator user account has been deleted
As shown in the figure below. Router A has passed the IP address 10.0.12.2 Telnet Router B. Which of the following operations on the current interface will cause the Telnet session between Router A and Router B to be interrupted? () (Multiple Choice Questions)
A. Enable OSPF protocol under G0/0/1 interface
B. Configure static routing
C. Modify G0/0/1 interfaceIP address
D. Close G0/0/1 interface
On the switch, which VLANs can be deleted by using the undo command? ()*
A. vlan 4094
B. vlan 2
C. vlan 1
D. vlan 1024
ForwardD.Delay exists when an STP port transitions between which of the following states?
A. Forwarding-Di sableD.Learning-Forwarding
B. Learning-Forwarding
C. Disabled-Blocking
D. Blocking-Listening
E. Listening-Learning
The routing table is generated by*
A. Direct connection
B. Static
C. OSPF
D. ISIS
Which of the following statements about IPv6 anycast addresses are correct?
A. The group anycast address and the single address address use the same address space
B. Back to provide services with more than functions
C. The packet whose destination address is the anycast address will be sent to the nearest network interface in the sense of routing
D. Back to achieve service load sharing
Which of the following functions does the LCP protocol in the PPP protocol support? ()*
A. Negotiate network layer address
B. Negotiate authentication agreement
C. Detect link loop
D. Negotiated maximum receiving unit MRU
The network as shown in the figure. Which of the following configurations can realize that Host A cannot access the HTTP service of Host Host B cannot access the FTP service of Host A? () (Multiple Choice Questions)
A. acl number 3000 Rule Deny Tep Source # Acl number 3001 Rule 5 deny top source 100.0.13.0 0.0.0.255 source-port eq ftp destination # Interface GigabitEthernet0/0/1 Traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 Traffic-filter inbound acl 3001 #
B. acl number 3000 Rule Deny tcp source 100.0.13.0 0.0.0.255 destination 100.0.12.00.0.0.255 Destination eq www # Acl number 3001 Rule 5 deny tcp source 100.0.12.0 0.0.0.255 destination 100.0.13.00.0.0.255 Destination eq ftp # Interface GigabitEthernet0/0/1 Traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 Traffic-filter inbound acl 3001 #
C. acl number 3000 Rule 5 deny tcp source 100.0.12.0 0.0.0.255 source-port eq www destination Rule 5 deny tcp source 100.0.13.0 0.0.0.255 source-port eq ftp destination # Interface GigabitEthernet0/0/1 Traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 Traffic-filter inbound acl 3001 #
D. acl number 3000 Rule Deny tcp source 100.0.13.0 0.0.0.255 destination 100.0.12.00.0.0.255 Destination eq www # Acl number 3001 Rule 5 deny tcp source 100.0.12.0 0.0.0.255 destination 100.0.13.00.0.0.255 Destination eq ftp # Interface GigabitEthernet0/0/1 Traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 Traffic-filter inbound acl 3001
The router enables the FTP service, the user name and password are both huawei, and the root directory of FTP is set to flash:/dhcp/. Which of the following commands must be configured?*
A. ftp server enable
B. local-user huawoi ftp-directory flash:/dhcp/
C. local -user huawei passrorD.cipher Huawei
D. local-user huawei service-type ftp
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