CCNP系列認(rèn)證CCNP(642-813)單項(xiàng)選擇題每日一練(2019.01.11)

單項(xiàng)選擇題
Refer to the exhibit. What will happen when one more user is connected to interface FastEthernet 5/1？（）
A. The first address learned on the port will be removed from the secure address list and be replaced with the new address.
B. All secure addresses will age out and be removed from the secure address list. This will cause the security violation counter to increment.
C. The packets with the new source addresses will be dropped until a sufficient number of secure MAC addresses are removed from the secure address list.
D. The interface will be placed into the error-disabled state immediately， and an SNMP trap notification will be sent.
單項(xiàng)選擇題
Which of the following should you enable to prevent a switch from forwarding packets with source addresses that are outside an administratively defined group？（）
A. DAI
B. STP
C. PVLAN
D. port security
單項(xiàng)選擇題
VOIP is being implemented on the Company network. In a properly designed network， what is the maximum amount of time a voice package should spend crossing a network？（）
A.90 milliseconds
B.120 milliseconds
C.150 milliseconds
D.240 milliseconds
單項(xiàng)選擇題
You are the network administrator at Company and switch R1 is configured as shown below： Interface gigethernet 0/1 Switchport mode trunk Switchport trunk encapsulation dot1q Switchport trunk native vlan 5 If untagged frames are arriving on interface gigethernet 0/1 of R1， which of the following statement are correct？（）
A. Untagged frames are automatically assumed to be in VLAN 5.
B. Untagged frames are defaulted to VLAN 1 traffic.
C. Untagged frames are dropped because all packets are tagged when dot1q trunked.
D. Untagged frames are determined on the other switch
E. Untagged frames are not supported on 802.1Q trunks.
單項(xiàng)選擇題
Refer to the exhibit. Which interface or interfaces on switch SW_A can have the port security feature enabled？（）
A. Ports 0/1 and 0/2
B. The trunk port 0/22 and the EtherChannel ports
C. Ports 0/1， 0/2 and 0/3
D. Ports 0/1， 0/2， 0/3， the trunk port 0/22 and the EtherChannel ports
E. Port 0/1
F. Ports 0/1， 0/2， 0/3 and the trunk port 0/22