All of the popular Telnet servers are also ____________________ servers.
Fill in the blank(s) with the appropriate word(s).
SSH
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When only a copy of the contents of a variable are passed, the receiving procedure can change the value stored inside the variable.
Answer the following statement true (T) or false (F)
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}
What is a bit-stream image??
What will be an ideal response?
What frequencies can be used by GSM with the TDMA technique??
A. ?1200 to 1500 MHz B. ?2.4 GHz to 5.0 GHz C. ?600 to 1000 MHz D. ?800 to 1000 MHz