We want to construct a memory with 256 bytes in capacity. Assume that each byte has a unique address. (a) How many address lines do we need for this memory organization? (b) We have a memory chip with 32 bytes. How many chips are required to construct a memory with 256 bytes?

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Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?

Which of the following includes the three primary network access technologies? dsl, cable modem, broadband lan, wan, man voip, uc, iptv tcp/ip, ftp, dhcp