CCNA系列认证CCNA(200-120)单项选择题每日一练(2019.01.20)

单项选择题
On which options are standard access lists based?（）
A.destination address and wildcard mask
B.source address and wildcard mask
C.destination address and subnet mask
D.source address and subnet mask
单项选择题
Given an IP address 172.16.28.252 with a subnet mask of 255.255.240.0, what is the correct network addres?（）
A.172.16.16.0
B.172.16.24.0
C.172.16.0.0
D.172.16.28.0
单项选择题
assuming the default switch configuration which vlan range can be added modified and removed on a cisco switch?（）
A.2 through 1001
B.1 through 1001
C.1 through 1002
D.2 through 1005
单项选择题
Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13. An 802.1Q trunk is configured between the two switches. On CAT1, VLAN 10 is chosen as native, but on CAT2 the native VLAN is not specified.What will happen in this scenario?（）
A.802.1Q giants frames could saturate the link.
B.VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames.
C.A native VLAN mismatch error message will appear.
D.VLAN 10 on CAT1 and VLAN 1 on CAT2 will send tagged frames.
单项选择题
What dose a Layer 2 switch use to decide where to forward a received frame?（）
A.source MAC address
B.source IP address
C.source switch port
D.destination IP address
E.destination port address
F.destination MAC address