多选题Assume session is an HttpSession， and is not referenced anywhere else in ServletA. Which two changes， taken together， ensure that value is equal to “Hello” on line 23？ （）AABBCCDDEE

 The value returned needs to be cast to an int.

 The getAttribute methos takes two arguments.

 Primitive CANNOT be stored in the HttpSession.

 The HttpSession attribute name must NOT exceed eight characters.

INSTR returns the numeric position of a named character.

NVL2 returns the first non-null expression in the expression list.

TRUNCATE rounds the column, expression, or value to n decimal places.

DECODE translates an expression after comparing it to each search value.

TRIM trims the heading or trailing characters (or both) from a character string.

NVL compares two expressions and returns null if they are equal, or the first expression if they are not equal.

NULLIF compares two expressions and returns null if they are equal, or the first expression if they are not equal.

 put（String name. Object value）

 set（String name. Object value）

 setAttribute（String name. Object value）

 putAttribute（String name. Object value）

 addAttribute（String name. Object value）

HttpSession session = request.getSession（）；

HttpSession session = request.getSession（id）；

HttpSession session = request.getSession（true）；

HttpSession session = request.getSession（false）；

HttpSession session = request.getSession（jsessionid）；

 ${cart = null} 

<c：remove var=cart />

<c：remove var=${cart} />

<c：remove var=cart scope=session />

<c：remove scope=session>cart</c：remove>

<c：remove var=${cart} scope=session />

<c：remove scope=session>${cart}</c：remove>

${cart = null}

<c：remove var=cart />

<c：remove var=${cart} />

<c：remove var=cart scope=session />

<c：remove scope=session>cart</c：remove>

float Tsquare = session.getFloatAttribute（Tsquare）；

float Tsquare = （Float） session.getAttribute（Tsquare）；

float Tsquare = （float） session.getNumericAttribute（Tsquare）；

float Tsquare = （（Float） session.getAttribute.（Tsquare））.floatValue（）；

float Tsquare = （（Float） session.getFloatAttribute.（Tsquare））.floatValue；

Forwarding Class

Scheduler

Rewrite Rules

Priority

Use the – replicate-do-db, — replicate-do-table, or – replicate-wild-do-table option with the value equal to OLD_INVENTORY

Change the binlog_format option to ROW and restart mysqld before you create the OLD_INVENTORY table

Stop SQL_THREAD on the slave until you have finished using the OLD_INVENTORY temporary table

Set binlog_format=MIXED with the – replicate-ignore-temp-table option

Use the – replicate-ignore-table option with the value equal to OLD_INENTORY.OLD_INVENTORY and restart mysqld before creating the temporary table

${priority = ’medium’}

${requestScope[’priority’] = ’medium’}

<c：set var=priority value=medium />

<c：set var=priority scope=request>medium</c：set>

<c：set var=priority value=medium scope=request />

Move the line 12 print statement into the foo（） method.

Change line 7 to public synchronized void go（） {.

Change the variable declaration on line 3 to private volatile int x；.

Wrap the code inside the foo（） method with a synchronized（ this ） block.

Wrap the for loop code inside the go（） method with a synchronized block synchronized（this） { // for loop code here }.

session = response.getSession（）；

session = request.getSession（）；

session = request.getSession（true）；

session = request.getSession（false）；

session = request.getSession（jsessionid）；

${cart = null }

<c：remove var=”cart” />

<c：remove var=”${cart}” />

<c：remove var=”cart” scope=”session” />

<c：remove scope=”session”>cart</c：remove>

<c：remove var=”${cart}” scope=”session” />

<c：remove scope=”session”>${cart}</c：remove>

They accept only a single argument

They can be nested only to two levels

Arguments can only be column values or constants

They always return a single result row for every row of a queried table

They can return a data type value different from the one that is referenced

LDP hello packets are sent to TCP 646.

LDP session packets are sent to TCP 646.

LDP session packets are sent to TCP 711.

LDP hello packets are sent to TCP 711.

LDP hello packets are sent to UDP 711.

LDP hello packets are sent to UDP 646.

A sequence will never generate duplicate values

The MAXVALUE of a sequence can be equal to the MINVALUE

It is not possible to create a sequence that generates a constant since the INCREMENT value must be greater than zero

When a sequence cycles back to either the MAXVALUE or MINVALUE, it will always be equal to the specified value of either of these two boundaries