CCNA系列认证CCNA(640-553)单项选择题每日一练(2019.01.22)

单项选择题
Which statement is correct regarding the aaa configurations based on the exhibit provided？（）
A.The authentication method list used by the vty port is named test.
B.If the TACACS+ AAA server is not available， no users will be able to establish a Telnet session with the router.
C.If the TACACS+ AAA server is not available， console access to the router can be authenticated using the local database.
D.The authentication method list used by the console port is named test.
单项选择题
Which is the main difference between host-based and network-based intrusion prevention？（）
A.Host-based IPS can work in promiscuous mode or inline mode.
B.Network-based IPS can provide protection to desktops and servers without the need of installing specialized software on the end hosts and servers.
C.Network-based IPS is better suited for inspection of SSL and TLS encrypted data flows.
D.Host-based IPS deployment requires less planning than network-based IPS.
单项选择题
Stream ciphers run on which of the following？（）
A.Fixed-length groups of digits called blocks
B.Individual blocks，one at a time，with the transformations varying during the encryption
C.Individual digits，one at a time，with the transformations varying during the encryption
D.Fixed-length groups of bits called blocks
单项选择题
Please choose the correct description about Cisco Self-Defending Network characteristics.（）
A.INTEGRATED - P4S2，COLLABORATIVE - P4S1ADAPTIVE - P4S3
B.INTEGRATED - P4S1，COLLABORATIVE - P4S2ADAPTIVE - P4S3
C.INTEGRATED - P4S3，COLLABORATIVE - P4S2ADAPTIVE - P4S1
D.INTEGRATED - P4S2，COLLABORATIVE - P4S3ADAPTIVE - P4S1
单项选择题
Which example is of a function intended for cryptographic hashing？（）
A.MD65
B.SHA-135
C.XR12
D.MD5