The leaf blocks in the index are doubly linked.
The leaf node stores a bitmap for each key value.
The rows with NULL value in key columns also have entries in the index.
The deletion of a row from the table causes a logical deletion in index leaf block and the space becomesavailable for the new leaf entry
第1题：
A. Tunnels are initiated by the LAC
B. Tunnels are initiated by the LNS
C. By default, subscriber authentication occurs on the LNS
D. By default, subscriber authentication occurs on the LAC
第2题：
Which two statements are true regarding the role of the Routing Engine (RE)?（）
第3题：
A. It cannot generate recommendations that support multiple workload queries.
B. It can recommend partitioning on tables provided that the workloads have some predicates and joins on the columns of the NUMBER or DATE type.
C. It can recommend partitioning only on tables that have at least 10,000 rows.
D. It can recommend only B-tree indexes and not bitmap or function-based indexes
第4题：
Which two statements are true regarding B-tree indexs（）
第5题：
Which two statements are true regarding L2TP? （）(Choose two.)
第6题：
Which two statements regarding firewall user authentication client groups are true?（） (Choose two.)
第7题：
Which two statements are true regarding high-availability chassis clustering？（）
第8题：
A. The same key is used for encryption and decryption.
B. It is commonly used to create digital certificate signatures.
C. It uses two keys: one for encryption and a different key for decryption.
D. An attacker can decrypt data if the attacker captures the key used for encryption.
第9题：
Which two statements regarding asymmetric key encryption are true？（）
第10题：
Which two statements are TRUE regarding Coherence Indexes ？ （）