单选题What is valid reason for a switch to deny port access to new devices when port security is enabled?（）A The denied MAC addresses have already been learned or confgured on another secure interface in the same VLAN.B The denied MAC address are statically

题目
单选题
What is valid reason for a switch to deny port access to new devices when port security is enabled?（）
A

The denied MAC addresses have already been learned or confgured on another secure interface in the same VLAN.

B

The denied MAC address are statically configured on the port.

C

The minimum MAC threshold has been reached.

D

The absolute aging times for the denied MAC addresses have expired.

相似考题

1.将交换机的access端口ethernet0/1加入VLAN4,可用如下方法配置（）。A.[Switch]vlan 4[Switch-vlan4]port ethernet0/1B.[Switch]vlan 4[Switch-Ethernet0/1]port access vlan 4C.[Switch]vlan 4[Switch-vlan4]port accesse thernet0/1D.[Switch]vlan 4[Switch-Ethernet0/1]port access vlan pvid 4[Huawei]vlan 3500[Huawei-Gigabit Ethernet0/0/1]disth interface Gigabit Ethernet0/0/1 port link-type access portdefault vlan 3500

2.What is valid reason for a switch to deny port access to new devices when port security is enabled?()A. The denied MAC addresses have already been learned or confgured on another secure interface in the same VLAN.B. The denied MAC address are statically configured on the port.C. The minimum MAC threshold has been reached.D. The absolute aging times for the denied MAC addresses have expired.

3.Refer to the exhibit. Switch port FastEthernet 0/24 on AlSwitch1 will be used to create an IEEE 802.1Q- complaint trunk to another switch. Based on the output shown, What is the reason the trunk does not form, even thought the proper cabling has been attached?（）A.VLANs have not been created yetB.An IP address must be configured for the portC.The port is currently configured for access modeD.The correct encapsulation type has not been configuredE.The no shutdown command has not been entered for the port

4.After connecting a PC to an available port on a switch, you find that the PC can not access any of the resources on the LAN. No other PC's connected to the switch appear to be having any issues. What is the most likely cause for this problem?A．The router lacks a routing table entry for the new hostB．The host switch port is assigned to the incorrect VLANC．The host MAC address is incorrectly configuredD．A STP instance for the new host has not been initializedE．The switch does not have the MAC address hard coded in the CAM table.

更多“What is valid reason for a switch to deny port access to new”相关问题

  • 第1题：

    Which are valid modes for a switch port used as a VLAN trunk? ()

    A.transparent

    B.auto

    C.on

    D.desirable


    参考答案：B, C, D

  • 第2题：

    Which set of commands is recommended to prevent the use of a hub in the access layer?（）

    • A、switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security maximum 1
    • B、switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security mac-address 1
    • C、switch(config-if)#switchport mode access switch(config-if)#switchport port-security maximum 1
    • D、switch(config-if)#switchport mode access switch(config-if)#switchport port-security mac-address 1

    正确答案:C

  • 第3题：

    Why would a network administrator configure port security on a switch?（）

    • A、To prevent unauthorized Telnet access to a switch port.
    • B、To limit the number of Layer 2 broadcasts on a particular switch port.
    • C、To prevent unauthorized hosts from accessing the LAN.
    • D、To protect the IP and MAC address of the switch and associated ports.
    • E、To block unauthorized access to the switch management interfaces over common TCP ports.

    正确答案:C

  • 第4题：

    A new Catalyst switch is connected to an existing switch using a crossover cable. As a result of this, what would the switch port link lights display?（）

    • A、The switch port link lights will be off on both switches indicating the ports are not connected.
    • B、The switch port link light will be off on one switch indicating that STP has disabled the port.
    • C、The switch port link lights will flash amber indicating an error.
    • D、The switch port link lights will be green indicating normal operation.

    正确答案:D

  • 第5题：

    You work as a network Technician. A new workstation has consistently been unable to obtain anIP address from the DHCP server when the workstation boots. Older workstations function normally， and the new workstation obtains an address when manually forced to renew its address.  What should be configured on the switch to allow the workstation to obtain an IP address at boot？（）

    • A、UplinkFast on the switch port connected to the server
    • B、BackboneFast on the switch port connected to the server
    • C、PortFast on the switch port connected to the workstation
    • D、trunking on the switch

    正确答案:C

  • 第6题：

    What is the function of the no switchport catalyst switch interface configuration command?（）

    • A、Disables the interfaces to prevent traffic flow
    • B、Clears all the configurations on the interface
    • C、Switches the port from access mode to trunk mode
    • D、Converts the port from physical Layer 2 port to physical Layer 3 port

    正确答案:D

  • 第7题：

    Which are valid modes for a switch port used as a VLAN trunk?（）

    • A、transparent
    • B、auto
    • C、on
    • D、desirable
    • E、blocking
    • F、forwarding

    正确答案:B,C,D

  • 第8题：

    A Cisco Aironet 1020 controller-based access point has been connected to a Catalyst 3550-24 PWRSwitch. However， when it is powered up， the access point fails. What has caused this problem？（）

    • A、access point does not support 802.11h
    • B、incorrect switch power supply
    • C、switch port is not enabled
    • D、switch does not support 802.3af
    • E、access point has not been initialized with the primary controller

    正确答案:D

  • 第9题：

    Which are valid modes for a switch port used as a VLAN trunk? （）

    • A、transparent
    • B、auto
    • C、on
    • D、desirable

    正确答案:B,C,D

  • 第10题：

    单选题
    A new Catalyst switch is connected to an existing switch using a crossover cable. As a result of this, what would the switch port link lights display?（）
    A

    The switch port link lights will be off on both switches indicating the ports are not connected.

    B

    The switch port link light will be off on one switch indicating that STP has disabled the port.

    C

    The switch port link lights will flash amber indicating an error.

    D

    The switch port link lights will be green indicating normal operation.


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    A lightweight access point has been connected to a Catalyst 3550 24-PWR switch， and on power-up the access point fails. What is the problem with the switch？（）
    A

    The power supply has inadequate wattage.

    B

    Power is incorrectly configured on the port.

    C

    It does not support 802.3af Poe.

    D

    Power is not enabled on the port.


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    What is valid reason for a switch to deny port access to new devices when port security is enabled?（）
    A

    The denied MAC addresses have already been learned or confgured on another secure interface in the same VLAN.

    B

    The denied MAC address are statically configured on the port.

    C

    The minimum MAC threshold has been reached.

    D

    The absolute aging times for the denied MAC addresses have expired.


    正确答案： C
    解析： 暂无解析

  • 第13题：

    Which set of commands is recommended to prevent the use of a hub in the access layer?()

    A.switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security maximum 1

    B.switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security mac-address 1

    C.switch(config-if)#switchport mode access switch(config-if)#switchport port-security maximum 1

    D.switch(config-if)#switchport mode access switch(config-if)#switchport port-security mac-address 1


    参考答案：C

  • 第14题：

    Two access points running the core feature set are connected to the same switch and are  providing guest services. if pspf is enabled. What must be enabled on the switch to prevent clients from seeing one another’s data？（）

    • A、port-based radius
    • B、802.1q trunking
    • C、inline power
    • D、protected port

    正确答案:D

  • 第15题：

    A lightweight access point has been connected to a Catalyst 3550 24-PWR switch， and on power-up the access point fails. What is the problem with the switch？（）

    • A、The power supply has inadequate wattage.
    • B、Power is incorrectly configured on the port.
    • C、It does not support 802.3af Poe.
    • D、Power is not enabled on the port.

    正确答案:C

  • 第16题：

    Two access points running the core feature set are connected to the same switch and are providingguest services. If PSPF is enabled， what must be enabled on the switch to prevent clients fromseeing one another’s data？（）

    • A、port-based RADIUS
    • B、802.1q trunking
    • C、inline power
    • D、protected port

    正确答案:D

  • 第17题：

    A cisco aironet 1020 controller-based access point has been connected to a catalyst 3550-24 pwr switch. however， when it is powered up， the access point fails. What has caused this problem？（）

    • A、access point does not support 802.11h
    • B、incorrect switch power supply
    • C、switch port is not enabled
    • D、switch does not support 802.3af
    • E、access point has not been initialized with the primary controller

    正确答案:D

  • 第18题：

    What is valid reason for a switch to deny port access to new devices when port security is enabled?（）

    • A、The denied MAC addresses have already been learned or confgured on another secure interface in the same VLAN.
    • B、The denied MAC address are statically configured on the port.
    • C、The minimum MAC threshold has been reached.
    • D、The absolute aging times for the denied MAC addresses have expired.

    正确答案:B

  • 第19题：

    A Cisco Aironet 1020 controller-based access point has been connected to a Catalyst 3550-24PWR Switch. However， when it is powered up， the access point fails. What has caused this problem？（）

    • A、access point does not support 802.11h
    • B、incorrect switch power supply
    • C、switch port is not enabled
    • D、switch does not support 802.3af
    • E、access point has not been initialized with the primary controller

    正确答案:D

  • 第20题：

    When configuring port security on a Cisco Catalyst switch port， what is the default action taken by the switch if a violation occurs？ （）

    • A、protect （drop packets with unknown source addresses）
    • B、restrict （increment SecurityViolation counter）
    • C、shut down （access or trunk port）
    • D、transition （the access port to a trunking port）

    正确答案:C

  • 第21题：

    A Company switch was configured as shown below：  switchport mode access  switchport port-security   switchport port-security maximum 2 switchport port-security mac-address 0002.0002.0002   switchport port-security violation shutdown   Given the configuration output shown above，  what happens when a host with the MAC address of  0003.0003.0003 is directly connected to the switch port？ （）

    • A、 The host will be allowed to connect.
    • B、 The port will shut down.
    • C、 The host can only connect through a hub/switch where 0002.0002.0002 is already connected.  
    • D、 The host will be refused access.
    • E、 None of the other alternatives apply

    正确答案:A

  • 第22题：

    单选题
    A Company switch was configured as shown below：  switchport mode access  switchport port-security   switchport port-security maximum 2 switchport port-security mac-address 0002.0002.0002   switchport port-security violation shutdown   Given the configuration output shown above，  what happens when a host with the MAC address of  0003.0003.0003 is directly connected to the switch port？ （）
    A

     The host will be allowed to connect.

    B

     The port will shut down.

    C

     The host can only connect through a hub/switch where 0002.0002.0002 is already connected.  

    D

     The host will be refused access.

    E

     None of the other alternatives apply


    正确答案： A
    解析： 暂无解析

  • 第23题：

    多选题
    A network administrator wants to ensure that only the server can connect to port Fa0/1 on a Catalyst switch. The server is plugged into the switch Fa0/1 port and the network administrator is about to bring the server onlinE.What can the administrator do to ensure that only the MAC address of the server is allowed by switch port Fa0/1? （）
    A

    Configure port Fa0/1 to accept connections only from the static IP address of the server.

    B

    Employ a proprietary connector type on Fa0/1 that is incompatible with other host connectors.

    C

    Configure the MAC address of the server as a static entry associated with port Fa0/1.

    D

    Bind the IP address of the server to its MAC address on the switch to prevent other hosts from spoofing the server IP address.

    E

    Configure port security on Fa0/1 to reject traffic with a source MAC address other than that of the server.

    F

    Configure an access list on the switch to deny server traffic from entering any port other than Fa0/1.


    正确答案： D,C
    解析： 暂无解析

  • 第24题：

    多选题
    What three pieces of information can be used in an extended access list to filter traffic (Choose three.)（）。
    A

    protocol

    B

    VLAN number

    C

    TCP or UDP port numbers

    D

    source switch port number

    E

    source IP address and destination IP address

    F

    source MAC address and destination MAC address


    正确答案： F,B
    解析： 暂无解析

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