CCIE系列认证CCIE(350-018)单项选择题每日一练(2018.10.19)

单项选择题
Select thebest answer to this qestion. ASA/PIX Active/Active failover can be used toload-balance：（）
A. All traffic passing through theappliance
B. Traffic from internal networks on a per IP basis
C. Based on protocol only.
D. On a per-context basis only.
单项选择题
When configuring a Cisco Adaptive Security Appliance in multiple context mode， which of the follow capabilities are supported？（）
A. Multicastis supported
B. Dynamic routing protocols are supported
C. VPN configurations are supported
D. Static routes are supported
单项选择题
What Cisco technology protects against Spanning-Tree Protocol manipulation？（）
A. Spanning tree protect
B. Root Guard and BPDU Guard
C. Unicast Reverse Path Forwarding
D. MAC spoof guard
E. Port Security
单项选择题
What is true about SYN cookies？（）
A. All TCPoptions are supported， such as largewindows.
B. The server can have more than8 unique MSS values.
C. SYN cookies are not implemented as a method of defending against SYN floods.
D. SYN cookies are implemented as a method of defending against SYN floods.
单项选择题
Which of the following best describes a hash function？（）
A.An irreversible fast encryption method
B.A reversible fast encryption method
C.A reversible value computed from a piece of data and used to detect modifications
D.An irreversible value computed froma piece of data and used to detect modifications
E.A table inwhich values are stored for efficient retrieval.