Combined Bank Assistant Engineer (IT) 2020 – Preliminary question & solution

Questions from the Combined Bank Assistant Engineer (IT) recruitment exam, 2020 – Preliminary, shared by the candidates who sat it. The paper: 37 MCQs. So far 37 MCQs have been shared. Topics include Computer Networks, Network Security, Digital Logic, Computer Architecture and Data Structure.

MCQ (37)

  1. Which of the following memory devices is not reprogrammable?
    1. a) Flash memory
    2. b) ROM
    3. c) EPROM
    4. d) EEPROM
  2. With zero volts on both inputs, what is the ideal output of an Operational Amplifier?
    1. a) Equal to Zero
    2. b) Same as positive input voltage
    3. c) None of the above
    4. d) Same as negative input voltage
  3. A technician testing a logic circuit sees that the output of a particular INVERTER is stuck LOW while its input is pulsing. Which one of…
    1. a) The output of the INVERTER is internally grounded
    2. b) The output of the INVERTER is externally grounded
    3. c) The input being driven by output of the INVERTER is internally grounded
    4. d) All of the above
  4. Consider the activities A1, A2 and A3 related to email: A1: Send an email from a mail client to a mail server A2: Download an email from…
    1. a) A1: HTTP A2: SMTP A3: POP
    2. b) A1: SMTP A2: FTP A3: HTTP
    3. c) A1: SMTP A2: POP A3: HTTP
    4. d) A1: POP A2: SMTP A3: IMAP
  5. Which of the following is the role of Certification Authority (CA) in electronic commerce using public key encryption?
    1. a) To manage a private key shared among the parties to the transaction.
    2. b) To manage digital signatures of the parties to the transaction
    3. c) To manage the passwords of the parties to the transaction
    4. d) To issue a digital certificate for the public key of the parties to the transaction
  6. The pre order traversal of binary tree is 40, 20, 10, 30, 60, 50, 70. Which one of the following is the post-order traversal of the tree?
    1. a) 10,20,30,40,50,60,70
    2. b) 10,30,20,50,70,60,40
    3. c) 40,20,60,10,30,50,70
    4. d) 70,50,60,30,10,20,40
  7. Suppose you are implementing a Queue of size N using a non-circular linked list having a front and a rear pointer as shown in the figure…
    1. a) Θ(1), Θ(1)
    2. b) Θ(1), Θ(n)
    3. c) Θ(n), Θ(1)
    4. d) Θ(n), Θ(n)
  8. Which device converts mechanical energy into electrical energy?
    1. a) Solar cell
    2. b) Motor
    3. c) Generator
    4. d) Transformer
  9. Which protocol dynamically assigns IP addresses in a TCP/IP network?
    1. a) ARP
    2. b) RIP
    3. c) SMTP
    4. d) DHCP
  10. A sine wave is offset ⅙ cycle with respect to time 0. What is its phase in degrees and radians?
    1. a) 60° and 1.046 rad
    2. b) 30° and 0.5236 rad
    3. c) 90° and 2.046 rad
    4. d) 360° and 6.2832 rad
  11. Which one is the bandwidth for a signal transmitting at 12 Mbps for QPSK (d=0)?
    1. a) 2 MHz
    2. b) 4 MHz
    3. c) 6 MHz
    4. d) None of the above
  12. There is a RAM issue on a PC/laptop. Which of the following symptom(s) might be an indication of RAM issue?
    1. a) PC frequently freezes, reboots
    2. b) Wrong BIOS time
    3. c) Function keys are not working properly
    4. d) All of them
  13. The Bangladesh Bank robbery, also known as the Bangladesh bank cyber heist, was a theft that took place in February 2016. The governor of…
    1. a) Fortinet Cyber Security
    2. b) Zacco Cybersecurity Research Lab
    3. c) Palo Alto Networks
    4. d) World Informatix Cyber Security
  14. The BNC connector is a miniature quick connect/disconnect connector that is used for ____ cable.
    1. a) Ribbon Electric
    2. b) Shielded/Twisted Pair
    3. c) Coaxial
    4. d) Fibre Optics
  15. ____ is the technique of hiding secret data within an ordinary, non-secret, file or message in order to avoid detection; the secret data…
    1. a) Cryptography Proper
    2. b) Steganography
    3. c) Overt Writing
    4. d) Coding
  16. A solid-state drive (SSD) is a newer, faster type of device that stores data on instantly-accessible ____.
    1. a) Ultra Magnetic Chip
    2. b) Integrated Circuit
    3. c) Random Access Memory
    4. d) High Bandwidth memory
  17. What is the current popular technology for maintaining smooth Wi-Fi performance and throughput for gaming, video streaming, and smart home…
    1. a) Wi-Fi Star Network Systems
    2. b) Wi-Fi Bus Network Systems
    3. c) Wi-Fi Mesh Network Systems
    4. d) Wi-Fi Ring Network Systems
  18. Which of the following techniques/algorithms cannot be used to detect cycles in an undirected and unweighted graph? N.B: A cycle in a…
    1. a) Disjoint Set Data Structure
    2. b) Breadth First Search
    3. c) Depth First Search
    4. d) Floyd-Warshall algorithm
  19. USER150, USER153 can do certain tasks and USER151, USER152 can also do certain tasks as depicted in the picture. For this reason, two ____…
    1. a) Roles
    2. b) Privileges
    3. c) Functions
    4. d) Stord Procedures
  20. Handshaking procedure takes place in ____.
    1. a) TCP
    2. b) UDP
    3. c) ARP
    4. d) Both A and B
  21. What is the minimum value that can be stored accurately in a 32-bit signed integer of C programming language?
    1. a) 0
    2. b) -2³¹
    3. c) -2³¹-1
    4. d) -2³²
  22. Suppose we have a Binary Search Tree where each node has an integer value. Which of the following tree traversal techniques can give us a…
    1. a) Pre-order traversal
    2. b) In-order traversal
    3. c) Post-order traversal
    4. d) BFS traversal
  23. _____ is the final stage of the testing process conducted before software release. This is referred to as:
    1. a) Alpha testing
    2. b) Beta testing
    3. c) Gamma testing
    4. d) Delta testing
  24. Which of the following languages causes 'Indentation Errors' for not using tabs properly?
    1. a) JavaScript
    2. b) Python
    3. c) Java
    4. d) Ruby
  25. Using loopback plugs, which task can be done from the given list?
    1. a) measuring voltage
    2. b) Test serial and parallel ports
    3. c) Check series connectivity
    4. d) Check resistivity
  26. Which of the following is an attack that threatens the integrity of information?
    1. a) Falsification of web pages
    2. b) Illegal copy of data stored in system
    3. c) DoS attack that creates system overload
    4. d) Wiretapping of communication contents
  27. Which of the following is a package of unauthorized programs and tools that has functions to create a back door in a server and hide the…
    1. a) RFID
    2. b) Rootkit
    3. c) TKIP
    4. d) web beacon
  28. What is/are the main operation of SSL/TLS?
    1. a) Encrypt packet in Data Link Layer
    2. b) Check error in Network Layer
    3. c) Ensure data security in Transport Layer
    4. d) All of the above
  29. URL stands for-
    1. a) Universal Resource Locator
    2. b) Uniform Resource Locator
    3. c) Unique Resource Locator
    4. d) None
  30. How much data can a flip-flop store?
    1. a) 4-bit data
    2. b) 1-bit data
    3. c) 3-bit data
    4. d) 2-bit data
  31. Which is the simplified form of (ABC)′ · (A′ + B′ + C′)?
    1. a) A′ + B′ + C′
    2. b) A′B′C′
    3. c) (ABC)′
    4. d) ((ABC)′)′
  32. Which is not a type of DNS attack?
    1. a) Cache Poisoning Attack
    2. b) Denial of Service Attack
    3. c) DNS spoofing
    4. d) CSRF attack
  33. Which is the disadvantage of Optical Fiber?
    1. a) Resistance to corrosive materials
    2. b) Greater immunity to tapping
    3. c) Unidirectional light propagation
    4. d) None of these
  34. Related records of the different relations can be stored on the same block using which file organization technique?
    1. a) Heap file organization
    2. b) Sequential file organization
    3. c) Hashing file organization
    4. d) Clustering file organization
  35. Which one is the text-based web browser?
    1. a) Chrome
    2. b) Lynx
    3. c) Safari
    4. d) Microsoft Edge
  36. Which one is not a layer of cloud computing?
    1. a) Computing as a service (CaaS)
    2. b) Infrastructure as a service (IaaS)
    3. c) Platform as a service (PaaS)
    4. d) Software as a service (SaaS)
  37. Which one of the following has higher bandwidth?
    1. a) Shielded Twisted Pair
    2. b) Unshielded Twisted Pair
    3. c) Coaxial Cables
    4. d) Fiber Optic Cables