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On the serial interface of a router, an inbound access list is configured to deny all traffic from UDP and TCP ports 21, 23, and 25. All other traffic is permitted. Based on this information, which types of traffic will be allowed through this interface?（）
A.SMTP
B.DNS
C.FTP
D.Telnet
E.HTTP
F.POP3
参考答案
更多 “ On the serial interface of a router, an inbound access list is configured to deny all traffic from UDP and TCP ports 21, 23, and 25. All other traffic is permitted. Based on this information, which types of traffic will be allowed through this interface?（）A.SMTPB.DNSC.FTPD.TelnetE.HTTPF.POP3 ” 相关考题
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Which of the following access list statements would deny traffic from a specifichost?()
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As a network administrator, you have been instructed to prevent all traffic originating on the LAN from entering the R2 router. Which the following command would implement the access list on the interface of the R2 router?（）A.access-list 101 inB.access-list 101 outC.ip access-group 101 inD.ip access-group 101 out
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Which of the following access list statements would deny traffic from a specifichost?（）A、Router(config)# access-list 1 deny 172.31.212.74 anyB、Router(config)# access-list 1 deny 10.6.111.48 hostC、Router(config)# access-list 1 deny 172.16.4.13 0.0.0.0D、Router(config)# access-list 1 deny 192.168.14.132 255.255.255.0E、Router(config)# access-list 1 deny 192.168.166.127 255.255.255.255
考题
An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports 21, 23 and 25. What types of packets will be permitted by this ACL (Choose three.)（）。A、FTPB、TelnetC、SMTPD、DNSE、HTTPF、POP3
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On your newly installed router, you apply the access list illustrated below to interface Ethernet 0 on a Cisco router. The interface is connected to the 192.168.1.8/29 LAN. access-list 123 deny tcp 192.168.166.18 0.0.0.7 eq 20 any access-list 123 deny tcp 192.168.166.18 0.0.0.7 eq 21 any How will the above access lists affect traffic?（）A、All traffic will be allowed to exit E0 except FTP traffic.B、FTP traffic from 192.168.166.19 to any host will be denied.C、FTP traffic from 192.168.166.22 to any host will be denied.D、All traffic exiting E0 will be denied.E、All FTP traffic to network 192.168.166.18/29 from any host will be denied.
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Which of the following statements regarding the use of multiple access lists are valid when configuring a single interface on a Cisco router?（）A、Application of up to three access lists per protocol to a single interface.B、No more than two access lists per interface.C、One access list may be configured per direction for each Layer 3 protocol configured on an interface.D、The maximum number allowed varies due to RAM availability in the router.E、An infinite number of access lists that can be applied to an interface, from most specific to most general.F、Cisco IOS allows only one access list to an interface.
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A standard IP access list is applied to an Ethernet interface of a router. What does this standard access list filter on?（）A、The source and destination addressesB、The destination port numberC、The destination addressD、The source addressE、All of the above
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What is the purpose of this command? ip route 0.0.0.0 0.0.0.0 serial0/0（）A、It configures a router to send all packets out interface serial 0/0.B、It configures a router to block routing updates from being sent out interface serial 0/0.C、It configures a router as a firewall, blocking all unauthorized packets from exiting serial 0/0.D、It configures a router to send all packets for unknown destination networks out interface serial 0/0.E、It configures a router to drop all packets for which the destination network is unknown.
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A network administrator has configured access list 172 to prevent Telnet and ICMP traffic from reaching a server with the address if 192.168.13.26. Which command can the administrator issue to verify that the access list is working properly?（）A、Router# ping 192.168.13.26B、Router# debug access-list 172C、Router# show open ports 192.168.13.26D、Router# show access-listE、Router# show ip interface
考题
On the serial interface of a router, an inbound access list is configured to deny all traffic from UDP and TCP ports 21, 23, and 25. All other traffic is permitted. Based on this information, which types of traffic will be allowed through this interface?（）A、SMTPB、DNSC、FTPD、TelnetE、HTTPF、POP3
考题
A standard access control list has been configured on a router and applied to interface Serial 0 in anoutbound direction. No ACL is applied to Interface Serial 1 on the same router. What will happen whentraffic being filtered by the access list does not match the configured ACL statements for Serial 0？（）A、The traffic is droppedB、The resulting action is determined by the destination IP addressC、The source IP address is checked，and，if a match is not found， traffic is routed out interface Serial 1D、The resulting action is determined by the destination IP address and port number
考题
As a network administrator, you have been instructed to prevent all traffic originating on the LAN from entering the R2 router. Which the following command would implement the access list on the interface of the R2 router?（）A、access-list 101 inB、access-list 101 outC、ip access-group 101 inD、ip access-group 101 out
考题
An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports21, 23 and 25. What types of packets will be permitted by this ACL? (Choose three.)（）A、FTPB、TelnetC、SMTPD、DNSE、HTTPF、POP3
考题
An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports 21, 23 and 25. What types of packets will be permitted by this ACL? （）A、FTPB、TelnetC、SMTPD、DNSE、HTTPF、POP3
考题
多选题An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports21, 23 and 25. What types of packets will be permitted by this ACL? (Choose three.)（）AFTPBTelnetCSMTPDDNSEHTTPFPOP3
考题
单选题Which of the following statements regarding the use of multiple access lists are valid when configuring a single interface on a Cisco router?（）A
Application of up to three access lists per protocol to a single interface.B
No more than two access lists per interface.C
One access list may be configured per direction for each Layer 3 protocol configured on an interface.D
The maximum number allowed varies due to RAM availability in the router.E
An infinite number of access lists that can be applied to an interface, from most specific to most general.F
Cisco IOS allows only one access list to an interface.
考题
多选题An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports 21, 23 and 25. What types of packets will be permitted by this ACL (Choose three.)（）。AFTPBTelnetCSMTPDDNSEHTTPFPOP3
考题
多选题On the serial interface of a router, an inbound access list is configured to deny all traffic from UDP and TCP ports 21, 23, and 25. All other traffic is permitted. Based on this information, which types of traffic will be allowed through this interface?（）ASMTPBDNSCFTPDTelnetEHTTPFPOP3
考题
多选题An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports 21, 23 and 25. What types of packets will be permitted by this ACL? （）AFTPBTelnetCSMTPDDNSEHTTPFPOP3
考题
单选题How would you characterize the source and type in a denial of service attack on a router？（）A
By perfornubg a show ip interface to see the type and source of the attack based upon the access-listmatchesB
By performing a show interface to see the transmitted load txload and receive load rxload ；if the interface utilization is not maxed out ，there is no attack underwayC
By setting up an access-list to permit all ICMP，TCP，and UDP traffic with the log or log-input commands，then use the show access-list and show log commands to determine the type and sourceof attackD
By applying an access-list to all incoming and outgoing interfaces，turning off route-cache on all interfaces，then，when telnetting into the router perform a debug IP packet detail
考题
单选题What is the purpose of this command? ip route 0.0.0.0 0.0.0.0 serial0/0（）A
It configures a router to send all packets out interface serial 0/0.B
It configures a router to block routing updates from being sent out interface serial 0/0.C
It configures a router as a firewall, blocking all unauthorized packets from exiting serial 0/0.D
It configures a router to send all packets for unknown destination networks out interface serial 0/0.E
It configures a router to drop all packets for which the destination network is unknown.
考题
单选题A standard access control list has been configured on a router and applied to interface Serial 0 in anoutbound direction. No ACL is applied to Interface Serial 1 on the same router. What will happen whentraffic being filtered by the access list does not match the configured ACL statements for Serial 0？（）A
The traffic is droppedB
The resulting action is determined by the destination IP addressC
The source IP address is checked，and，if a match is not found， traffic is routed out interface Serial 1D
The resulting action is determined by the destination IP address and port number
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