An IP Address:
A. defines the path to a facility or file on the web.
B. is the unique address that every computer node and host attached to the Internet must have.
C. is represented by a 64-bit data packet.
D. is the address of the protocol rules and standards that governing the design of internet hardware and software.
Answer: B
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Provide the equivalent domain relational calculus and relational algebra expressions for each of the tuple relational calculus expressions given in Exercise 4.10.
(a) {H.hotelName | Hotel(H) ? H.city = ‘London’} (b) {H.hotelName | Hotel(H) ? (?R) (Room(R) ? H.hotelNo ? R.hotelNo?? R.price ? 50)} (c) {H.hotelName | Hotel(H) ? (?B) (?G) (Booking(B) ? Guest(G) ? H.hotelNo ? B.hotelNo?? B.guestNo = G.guestNo ?? G.guestName = ‘John Smith’)} (d) {H.hotelName, G.guestName, B1.dateFrom, B2.dateFrom | Hotel(H) ? Guest(G) ? Booking(B1) ? Booking(B2) ? H.hotelNo ? B1.hotelNo?? G.guestNo = B1.guestNo ?? B2.hotelNo = B1.hotelNo ? B2.guestNo = B1.guestNo ?? B2.dateFrom ? B1.dateFrom}
The paragraph element shown in the accompanying figure is a block-level element.
Answer the following statement true (T) or false (F)
Which of the following is a kind of text that Photoshop lets you enter?
a. tracked type b. pixel type c. point type d. baseline type
Which of the following function prototypes is valid?
A. int funcExp(int x, float v); B. funcExp(int x, float v){}; C. funcExp(void); D. int funcExp(x);