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　　1. A class B network on the internet has a subnet mask of 255.255.240.0, what is the maximum number of hosts per subnet .

　　a. 240 b. 255 c. 4094 d. 65534

　　2. What is the difference: between o(log n) and o(log n^2), where both logarithems have base 2 .

　　a. o(log n^2) is bigger b. o(log n) is bigger

　　c. no difference

　　3. For a class what would happen if we call a class’s constructor from with the same class’s constructor .

　　a. compilation error b. linking error　c. stack overflow d. none of the above

　　4. “new” in c++ is a: .

　　a. library function like malloc in c

　　b. key word c. operator

　　d. none of the above

　　5. Which of the following information is not contained in an inode .

　　a. file owner b. file size

　　c. file name d. disk address

　　6. What’s the number of comparisons in the worst case to merge two sorted lists containing n elements each .

　　a. 2n b.2n-1 c.2n+1 d.2n-2

　　7. Time complexity of n algorithm T(n), where n is the input size ,is T(n)=T(n-1)+1/n if n>1 otherwise 1 the order of this algorithm is .

　　a. log (n) b. n c. n^2 d. n^n

　　8. The number of 1’s in the binary representation of 34096+ 15256+516+3 are .

　　a. 8 b. 9 c. 10 d. 12
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