69. Which one of the following is an open source software for both full image backup and restoration？
(A) GIMP
(B) Clonezilla
(C) LXQt
(D) Norton Ghost

70. Which of the following statements about the greedy algorithm is WRONG？ (A)A greedy algorithm follows the problem-solving heuristic of making the locally optimal choice at each stage (B)The most important advantage of a greedy algorithm is to yield locally optimal solutions that approximate a globally optimal solution in a reasonable amount of time (C)Huffman Coding is a greedy algorithm and therefore, this algorithm does not guarantee the optimal solution (D)A greedy algorithm may suffer from the horizon effect, which may produce the unique worst possible solution

71. In non-preemptive shortest job first scheduling, consider the following five processes each having its own unique burst time and arrival time. What is the average waiting time？ (A) 3.6 (B) 5.2 (C) 7.8 (D) 9.6 

72. Given a binary tree, the result of its 'pre-order traversal' is 'ABCEDIHFG', and the result of its 'post-order traversal' is 'ECDBFGHIA'. What is the result of its 'in-order traversal'？ (A) ABICDHEFG (B) ABIECDHFG (C) ECDBAFGHI (D) ECBDAFHGI

73. According to the latest NIST (National Institute of Standards and Technology), users should focus on password’s length, as opposed to its complexity. Actually, NIST discourage users to use passwords which mix numbers, capitalization and special characters. Which one of the following is NOT the reason why NIST makes this recommendation？ (A)Complex memorized secrets are less likely to be memorable (B)Increasing length can improve the password entropy more than increasing complexity (C)If users need to follow the password complexity guideline, users’ password choices may be very predictable (D)Considering the IoT era, some devices cannot provide an input device large enough to contain all special characters

74. In computer science, a recursive function is a function which is defined by its self. About recursion, which of the following statements is WRONG？ (A)Recursion is more powerful than iteration. That is, a problem can be solved by a recursive function may not be solvable by an iteration function (B)A recursive function must contain two properties, a simple base case(s) and a recursive step (C)The appropriate data structure for implementing recursive functions is stack (D)The main advantage of recursion is usually the simplicity of instructions

75. Which one of the following statements about supervised and unsupervised machine learning is WRONG？ (A)Supervised machine learning requires labeled input and output data during the training phase of the machine learning lifecycle (B)Unsupervised machine learning is the training of models on raw and unlabeled training data (C)Supervised machine learning is generally used to classify data or make predictions, whereas unsupervised learning is generally used to understand relationships within datasets (D)K-means clustering is a kind of supervised machine learning technique 試題公告 僅供參考 15

76. Richard O. Mason proposed a social framework for addressing four major ethical issues, which is referred to as PAPA. What does Papa stand for？ (A) Protection, Availability, Proprietary, Accounting (B) Politics, Authentication, Property, Authorization (C) Process, Adequacy, Provability, Assurance (D) Privacy, Accuracy, Property, Accessibility

77. IEEE 802.11 wireless networking protocol uses RTS/CTS (Request To Send / Clear To Send) mechanism to solve which of the following problem？ (A) Halting problem (B) Hidden terminal problem (C) Network storming problem (D) Dining philosophers problem

78. To convert audio from analog to digital, it is necessary to record the audio amplitude periodically. This process is called？ (A) Quantization (B) Fourier Transform (C) Sampling (D) Normalization

79. When a user wants to access a web service, except using the password shared by the user and the server, sometimes the user can be authorized by Google. This is called Single sign-on (SSO). Which of the following is the technique used by Google to support SSO？ (A) Kerberos (B) ElGamal (C) Blockchain (D) OpenID connect

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