Which two statements independently compile? (Choose two.)

• A.List<? super Short> list = new ArrayList<Number>();
• B.List<? super Number> list = new ArrayList<Integer>();
• C.List<? extends Number> list = new ArrayList<Byte>();
• D.List<? extends Number> list = new ArrayList<Object>();
• E.List<? super Float> list = new ArrayList<Double>();

Correct Answer: A,C

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Given:

Which two method implementations are correct, when inserted independently in line 1? (Choose two.)

• A.Option E
• B.Option C
• C.Option B
• D.Option A
• E.Option D

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Given:

Which is true?

• A.The compilation fails due to an error in line 10.
• B.The compilation succeeds.
• C.The compilation fails due to an error in line 2.
• D.The compilation fails due to an error in line 7.
• E.The compilation fails due to an error in line 4.
• F.The compilation fails due to an error in line 6.
• G.The compilation fails due to an error in line 9.

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Given the code fragment:

What is the result?

• A.13 5 7 9
• B.2 4 6 B 10
• C.1 3 5 7 9 11
• D.2 4 6 8

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Your organization makes mlib.jar available to your cloud customers. While working on a new feature for mlib.jar, you see that the customer visible method public void enableService(String hostName, String portNumber) executes this code fragment

and you see this grant is in the security policy file:

What security vulnerability does this expose to your cloud customer's code?

• A.denial of service attack against any reachable machine
• B.none because the customer code base must also be granted SocketPermission
• C.SQL injection attack against the specified host and port
• D.privilege escalation attack against the OS running the customer code
• E.XML injection attack against any mlib server

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