维尔VERITAS软件笔试题

1. A class B network on the internet has a subnet mask of 255.255.240.0, w
hat 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 log
arithems 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 wi
th 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 3*4096+ 15*256+5*16+
3 are .
　　a. 8 b. 9 c. 10 d. 12
 

　
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