Choose the correct verb to agree in number with the subject of the following sentence.?
Neither Opal nor Elise __________ to share an apartment.
A. ?want
B. ?wants
Answer: B
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Suppose we have the following requirements for a university database that is used to keep track of students’ transcripts:
(a) The university keeps track of each student's name (SNAME), student number (SNUM), social security number (SSSN), current address (SCADDR) and phone (SCPHONE), permanent address (SPADDR) and phone (SPPHONE), birthdate (BDATE), sex (SEX), class (CLASS) (freshman, sophomore, ..., graduate), major department (MAJORDEPTCODE), minor department (MINORDEPTCODE) (if any), and degree program (PROG) (B.A., B.S., ..., Ph.D.). Both ssn and student number have unique values for each student. (b) Each department is described by a name (DEPTNAME), department code (DEPTCODE), office number (DEPTOFFICE), office phone (DEPTPHONE), and college (DEPTCOLLEGE). Both name and code have unique values for each department. (c) Each course has a course name (CNAME), description (CDESC), code number (CNUM), number of semester hours (CREDIT), level (LEVEL), and offering department (CDEPT). The value of code number is unique for each course. (d) Each section has an instructor (INSTUCTORNAME), semester (SEMESTER), year (YEAR), course (SECCOURSE), and section number (SECNUM). Section numbers distinguish different sections of the same course that are taught during the same semester/year; its values are 1, 2, 3, ...; up to the number of sections taught during each semester. (e) A grade record refers to a student (Ssn), refers to a particular section, and grade (GRADE). Design an relational database schema for this database application. First show all the functional dependencies that should hold among the attributes. Then, design relation schemas for the database that are each in 3NF or BCNF. Specify the key attributes of each relation. Note any unspecified requirements, and make appropriate assumptions to make the specification complete.
What is another term for a Layer 3 switch?
A. concentrator B. router C. hub D. bridge
____ is a block cipher designed by Xuejia Lai and James L. Massey in 1991.
A. AES B. IDEA C. Blowfish D. RC4
Digital still cameras most often use ____ cards for storage.
A. flash memory B. RAM memory C. ROM memory D. laser memory