Which of the following is an example of a standard IP access list?
A.access-list 110 permit host 1.1.1.1
B.access-list 1 deny 172.16.10.1 0.0.0.0
C.access-list 1 permit 172.16.10.1 255.255.0.0
D.access-list standard 1.1.1.1
Answer: B
Standard IP access lists use the numbers 1-99 and 1300-1999 and filter based on source IP address only. Option C is incorrect because the mask must be in wildcard format.