Which two statements are true regarding subqueries? （）

第1题：

Which two statements regarding firewall user authentication client groups are true?（） (Choose two.)

• A、A client group is a list of clients associated with a group.
• B、A client group is a list of groups associated with a client.
• C、Client groups are referenced in security policy in the same manner in which individual clients are referenced.
• D、Client groups are used to simplify configuration by enabling firewall user authentication without security policy.

第2题：

Which three statements are true regarding subqueries?（）

• A、Subqueries can contain GROUP BY and ORDER BY clauses 
• B、Main query and subquery can get data from different tables 
• C、Main query and subquery must get data from the same tables 
• D、Subqueries can contain ORDER BY but not the GROUP BY clause 
• E、Only one column or expression can be compared between the main query and subquery
• F、 Multiple columns or expressions can be compared between the main query and subquery

第3题：

第4题：

Which two statements are TRUE regarding Coherence Indexes ？ （）

• A、 indexes are maintained by cache entry ownes
• B、 an application should not suggest an index that another aplication had suggested
• C、 indexes cannot be sorted
• D、 each application using Coherence may suggest the same set of indexes when it starts

第5题：

Which two statements are true regarding L2TP? （）(Choose two.)

• 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6题：

Which two statements are true regarding the role of the Routing Engine (RE)?（）

• A、The RE controls and monitors the chassis.
• B、The RE manages the Packet Forwarding Engine (PFE).
• C、The RE receives a copy of the forwarding table from the forwarding plane.
• D、The RE implements class of service (COS).

第7题：

Which two statements are true regarding high-availability chassis clustering？（）

• A、A chassis cluster consists of two devices.
• B、A chassis cluster consists of two or more devices.
• C、Devices participating in a chassis cluster can be different models.
• D、Devices participating in a chassis cluster must be the same models

第8题：

第9题：

Which two statements regarding asymmetric key encryption are true？（）

• 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10题：

Which two statements are true regarding subqueries? （）

• A、A subquery can retrieve zero or more rows 
• B、Only two subqueries can be placed atone level 
• C、A subquery can be used only in SQL query statements 
• D、A subquery can appear on either side of a comparison operator 
• E、There is no limit on the number of subquery levels in the WHERE clause of a SELECT statement