Rupali Bank Assistant Network Engineer 2021 – Written (CTI) question & solution

Questions from the Rupali Bank Assistant Network Engineer recruitment exam, 2021 – Written (CTI), shared by the candidates who sat it. The paper: 8 written questions. So far 37 MCQs and 9 written questions have been shared. Topics include Computer Networks, Network Security, Coding, DBMS and Operating System.

MCQ (37)

  1. Which one of the following is not a search engine?
    1. a) Windows
    2. b) Google
    3. c) Yahoo
    4. d) Bing
  2. Which of the following cannot be used as a public IP address?
    1. a) 17.0.0.1
    2. b) 168.172.19.34
    3. c) 172.15.29.63
    4. d) 192.168.13.18
  3. In the diagram shown below. L1 is an Ethernet LAN and L2 is a Token-Ring LAN. An IP packet originates from sender S and traverses to R, as…
    1. a) 25
    2. b) 24
    3. c) 26
    4. d) 28
  4. Which protocol is used to send a destination network unknown message back to the originating host?
    1. a) TCP
    2. b) ARP
    3. c) ICMP
    4. d) BootP
  5. Which of the following statements is FALSE regarding a bridge?
    1. a) Bridge is a layer 3 device
    2. b) Bridge reduces collision domain
    3. c) Bridge is used to connect two or more LAN segments
    4. d) Bridge reduces broadcast domain
  6. Which of the following devices takes data sent from one network device and forwards it to the destination node based on MAC address?
    1. a) Hub
    2. b) Modem
    3. c) Switch
    4. d) Gateway
  7. Suppose we want to download text documents at the rate of 100 pages per second. Assume that a page consists of an average of 24 lines with…
    1. a) 182 kbps
    2. b) 512 kbps
    3. c) 1.248 Mbps
    4. d) 1.536 Mbps
  8. Which of the following is not a valid IP address?
    1. a) 3FFE::1:200:F8FF:FE75:50DF
    2. b) 10.25.26.24
    3. c) ABCD::100::F8FF:FE75:50DF
    4. d) 13.15.17.19
  9. Distance vector routing algorithm is a dynamic routing algorithm. The routing tables in distance vector routing algorithm are updated ___.
    1. a) automatically
    2. b) by server
    3. c) with back up database
    4. d) by exchanging information with neighbor nodes
  10. Suppose 10 users are plugged into a hub running 10 Mbps half-duplex. There is a server connected to the switch running 10 Mbps half-duplex…
    1. a) 100 kbps
    2. b) 1 Mbps
    3. c) 2 Mbps
    4. d) 10 Mbps
  11. What is the frequency range of the IEEE 802.11a standard?
    1. a) 2.4 Gbps
    2. b) 5 Gbps
    3. c) 2.4 GHz
    4. d) 5 GHz
  12. Determine the maximum length of the cable (in km) for transmitting data at a rate of 500 Mbps in an Ethernet LAN with frames of size…
    1. a) 1
    2. b) 2
    3. c) 2.5
    4. d) 5
  13. Which of the following describes a router's functions?
    1. a) Packet Switching
    2. b) Packet Filtering
    3. c) Internet Communication
    4. d) All of the above
  14. Count to infinity is a problem associated with
    1. a) link state routing protocol
    2. b) distance vector routing protocol
    3. c) DNS while resolving host name
    4. d) TCP for congestion control
  15. In a class B subnet, we know the IP address of one host and the mask as given below: IP address: 125.134.112.66 Mask: 255.255.224.0 What…
    1. a) 125.134.96.0
    2. b) 125.134.112.0
    3. c) 125.134.112.66
    4. d) 125.134.0.0
  16. Consider a 50 Mbps satellite channel with a 500 milliseconds round-trip propagation delay. If the sender wants to transmit 1000 bit…
    1. a) 250 milliseconds
    2. b) 20 milliseconds
    3. c) 520 milliseconds
    4. d) 270 milliseconds
  17. The combination of an IP address and a port number is known as _________.
    1. a) Network number
    2. b) Socket address
    3. c) Subnet mask number
    4. d) MAC address
  18. The address resolution protocol (ARP) is used for-
    1. a) Finding the IP address from the DNS
    2. b) Finding the IP address of the default gateway
    3. c) Finding the IP address that corresponds to a MAC address
    4. d) Finding the MAC address that corresponds to an IP address
  19. A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of…
    1. a) Send a different source port number
    2. b) Restart the virtual circuit
    3. c) Decrease the sequence number
    4. d) Decrease the window size
  20. Assume that Source S and Destination D are connected through an intermediate router R. How many times does a packet have to visit the…
    1. a) Network layer -4 times, Data link layer -4 times
    2. b) Network layer -4 times, Data link layer -6 times
    3. c) Network layer -2 times, Data link layer -4 times
    4. d) Network layer -3 times, Data link layer -4 times
  21. In the IPv4 addressing format, the number of networks allowed under Class C addresses is –
    1. a) 2¹⁴
    2. b) 2⁷
    3. c) 2²¹
    4. d) 2²⁴
  22. What is the split horizon?
    1. a) Information about a route should not be sent back in the direction from which the original update came.
    2. b) It splits the traffic when you have a large bus (horizon) physical network
    3. c) It prevents regular update messages from reinstalling a route that has gone down.
    4. d) It holds the regular updates from broadcasting to a downed link.
  23. What is route poisoning?
    1. a) It sends back the protocol received from a router as a poison pill, which stops the regular updates.
    2. b) It is information received from a router that can't be sent back to the originating router.
    3. c) It prevents regular update messages from reinstalling a route that has just come up.
    4. d) It describes when a router sets the metric for a downed link to infinity.
  24. What is a Computer Virus?
    1. a) Hardware
    2. b) Software
    3. c) Microorganism
    4. d) Non-living cell
  25. Suppose that a class A is defined with two variables name1, name2 and three methods with arguments int f1(int), void f2(String) and String…
    1. a) int f1(int)
    2. b) int f1(String)
    3. c) int f2(String)
    4. d) int f2(int)
  26. What is the purpose of flow control?
    1. a) To ensure the data is retransmitted if an acknowledgement is not received
    2. b) To reassemble segments in the correct order at the destination device
    3. c) To provide a means for the receiver to govern the amount of data sent by the sender
    4. d) To regulate the size of each segment.
  27. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
    1. a) Switch only
    2. b) RJ45 connector only
    3. c) Switch and Hub
    4. d) Hub and Repeater
  28. Which initial program is called at the starting of a computer?
    1. a) Computer Startup Loader
    2. b) Operating System Details
    3. c) Bootstrap Loader
    4. d) Hardware System Details
  29. What is the correct output of the following C program statements? int array[]={6, 7, 8, 9, 0, 1, 2, 4, 5, 6}, *p=array+5…
    1. a) 1
    2. b) 2
    3. c) 3
    4. d) Compile Error
  30. Suppose you need to assign IPv4 addresses to two computers of your company so that both computers belong to the subnet 255.255.255.240…
    1. a) 172.16.5.14 and 172.16.5.17
    2. b) 172.16.5.17 and 172.16.5.29
    3. c) 172.16.5.29 and 172.16.5.33
    4. d) 172.16.5.33 and 172.16.5.4
  31. Consider the following relational data table, Employee. Now, find the output of the following SQL statement. SELECT COUNT (*) FROM…
    1. a) 4
    2. b) 27
    3. c) 32
    4. d) 64
  32. What is the characteristic of OOP programming that allows binding data and methods to work as a unit?
    1. a) Inheritance
    2. b) Encapsulation
    3. c) Polymorphism
    4. d) Projection
  33. Which of the following uses the flip-flop circuit in a memory cell?
    1. a) DRAM
    2. b) EEPROM
    3. c) SDRAM
    4. d) SRAM
  34. Which of the logic expressions is equivalent to the digital circuit shown in the figure?
    1. a) X = A.B + A̅.B̅
    2. b) X = A + B
    3. c) X = A.B̄ + Ā.B
    4. d) X = (Ā + B).(A + B̄)
  35. Laili digitally signs a message and sends it to Mojnu. Verification of the signature by Mojnu requires-
    1. a) Laili's public key
    2. b) Mojnu's public key
    3. c) Mojnu's private key
    4. d) Laili's private key
  36. Classless Inter-Domain Routing (CIDR) receives a packet with address 131.23.151.76. The router's routing table has the following entries…
    1. a) 1
    2. b) 2
    3. c) 3
    4. d) 5
  37. An attacker sits between the sender and receiver and captures the information and retransmits to the receiver after some time without…
    1. a) Denial of service attack
    2. b) Masquerade attack
    3. c) Simple attack
    4. d) Replay attack

Written (9)

  1. Given a IPv4 address string, write C/C++/JAVA code to show the class the IP address belongs to. Sample Input: 192.168.0.0 Sample Output…
  2. Consider a disk pack with the following specifications- 16 surfaces, 128 tracks per surface, 256 sectors per track and 512 bytes per…
  3. Job arrival time and execution time of Operating system tasks table is given, find out- Process Burst Time Priority P1 10 3 P2 1 1 P3 2 3…
  4. A wants to send 2 files, each of 500000 bits, to B through a TDM channel that has 16 slots, a channel bit rate of 1.5 Mbps and a 30…
  5. Preorder and In-order sequence is given, Draw the binary tree and write a procedure sum Nodes (Node* root) to find out summation of all…
  6. Below tables are given, Employee (employee_id, name, salary, department) Leave (employee_id, date, reason, no_leaves) Holiday (Date…
  7. Write about 5G disadvantages: (a) Increased High Costs (b) Draining Battery of devices. (c) Increased infrastructure development cost
  8. Draw ER diagram: Given a scenario about football Game (Game_no, game_time, game_name), Team (team-id, coach_id, team-name), Referee…
  9. Which of the following regular expressions represents the set of all the binary strings with an odd number of 1's? a. 0*+(10*1)*10* b…

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