1. How many message types does the IPV6 Neighbor Discovery Protocol have?
A. 6 kinds
B. 3 kinds
C. 5 kinds
D. 4 kinds
2. The following statement about the primary key is correct ()
A. The field cannot be empty or repeated
B. It is the unique identification field that determines the record of the table in the database
C. It can be composed of multiple fields in the table
D. Can be a field in the table
3. Which of the following is a software defect? ()
A. The software realizes the functions not mentioned in the product specifications
B. The software has functions that should not appear in
the product specifications C. The software realizes the functions required by the product specifications but does not consider portability due to performance limitations Sexual issues
D. The software does not implement the functions required by the product specifications
4. The head pointer of the doubly linked list is begin, the tail pointer is end, and the time complexity is O(1). The operations are ()
A. Delete the head node
B. Insert an element after the tail
C. Delete the tail node
D. At the head Insert an element before the section
5. For the delete operation, the following statement is correct ()
A.delete from table name: where field name = value; delete eligible records
B.delete from table name: delete all records in the
table C.drop table table name: Delete table
D.drop database database name: delete database
6. Which of the following descriptions is incorrect for software beta testing?
A.β test is outside the software company launched the test, the test performed by professional testers
B.β test is within the software company launched the test, the test performed by the company's non-professional testers
C.β test is in Tests carried out outside the software company, tests that can be carried out by non-professional testers.
D.β testing is a test carried out inside the software company and carried out by the company’s professional testers.
7. In the database, what are the three elements of the ER method?
A. Relationship
B. Code
C. Domain
D. View
8. The single data structure that can be used to implement the queue is ()
A. Binary tree
B. Linked list
C. Stack
D. Array
9. Select the options belonging to the black box test method ()
A. Output coverage
B. Input coverage
C. Branch coverage
D. Test case coverage
10. Which of the following protocols are multi-connection protocols ()
A.SIP
B.FTP
C.H323
D.HTTP
Note: The answer will be announced later