4. Which one MAX_VALUE of primitive data type in C is greater than others?
(A) int
(B) unsigned int
(C) signed int
(D) double

(E) long

30. Which of the following statements about ROC curve and AUC is INCORRECT? (A) Usually, the y-axis is the true positive rate. (B) AUC is used as an indicator of the quality of the model. (C) The perfect prediction is at the ROC space coordinate (0, 1) point. (D) If AUC=0.5, it means that the model is the same as random guessing, and has no predictive value. (E) If AUC＜0.5 means that the model will not be better than random prediction in any way.

1. Which one of the following algorithms is NOT a symmetric algorithm?(A) DES (B) AES(C) Caesar Cipher (D) RSA(E) Playfair Cipher

2. Ping is a computer network administration utility used to test the reachability of a host on the Internet. Ping is implemented by which of the following protocols? (A) IGMP (B) XMPP (C) RCTP (D) ICMP (E) SIP

3. For a specific CPU design, there are three instruction classes as depicted in Table 1 and run at a clock rate of 100 MHz.For a given program, a compiler can produce the following executed instruction counts as depicted in Table 2. Please calculate the average CPI of this compiler.(A) 4(B) 2(C) 1.25(D) 0.5(E) All of the above are wrong.

5. Unsupervised learning is a type of algorithm that learns patterns from untagged data. Which of the following learning techniques is an unsupervised learning technique? (A) Decision tree (B) K-means clustering (C) Support vector machine (D) k-NN (E) Random Forest

6. Given a prefix expression “+ + (9) × (8) (7) × + × (6) (5) (4) (3)”, please calculate the result.(A) 167 (B) 147 (C) 127 (D) 117 (E) 107

7. Which type of memory or storage components has the shortest response time?(A) Main memory(B) CPU cache(C) Processor registers(D) Floppy disk drives(E) Solid-state drive

8. Given a C code as follows, which random range initializes the array myList?(A) 0 to 100(B) 1 to 100(C) 0 to 99(D) 1 to 99(E) All the listed answers are incorrect.

9. Which one of the following sections is shared by the threads in the same multithreaded process?(A) code (B) registers(C) stack (D) program counter(E) heap

10. Given a C code as follows, which one of the following is the return value of f(12, -20)?(A) -32 (B) -20 (C) 0 (D) 12 (E) 20