單項(xiàng)選擇題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.


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1.單項(xiàng)選擇題What is the purpose using the traceroute command?()

A. to map all the devices on a network.
B. to display the current TCP/IP configuration values.
C. to see how a device MAC address is mapped to its IP address.
D. to see the path a packet will take when traveling to a specified destination.
E. to display the MTU values for each router in a specified network path from source to a destination.

2.單項(xiàng)選擇題Which type of attack is characterized by flood of packet that requesing a TCP connection to a server?()

A. denial of service
B. brute force
C. reconnaissance
D. Trojan horse

3.單項(xiàng)選擇題What is the default routing update period for RIPv2?()

A. 15 seconds
B. 30 seconds
C. 180 seconds
D. 240 seconds

4.單項(xiàng)選擇題An administrator issues the command ping 127.0.0.1 from the command line prompt on a PC. If a reply is received, what does this confirm?()

A. The PC has connectivity with a local host.
B. The PC has connectivity with a Layer 3 device.
C. The PC has a default gateway correctly configured
D. The PC has connectivity up to Layer 5 of the OSI model
E. The PC has the TCP/IP protocol stack correctly installed.

5.單項(xiàng)選擇題How does using the service password encryption command on a router provide additional security? ()

A. by encrypting all passwords passing through the router
B. by encrypting passwords in the plain text configuration file
C. by requiring entry of encrypted passwords for access to the device
D. by configuring an MD5 encrypted key to be used by routing protocols to validate routing exchanges
E. by automatically suggesting encrypted passwords for use in configuring the router

最新試題

Three access ports have been installed and configured to a small office.What term defines the wireless topology?()

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Which statement is true, as relates to classful or classless routing?()

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Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?()

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Which command displays the CHAP authentication process as it occurs between two routers?()

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After the show ip route command has been entered,the follwing routes are displayed.Which route will not be entered into the routing table of a neighboring router?()

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Which statement describes the rule of split horizon?()

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While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?()

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What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?()

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When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?()

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Which IPsec security protocol should be used when confidentiality is required?()

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