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WorksheetsNEXORA
Total questions: 25
Worksheet time: 15mins
In MySQL, which data type is best for storing text of variable length?
CHAR
VARCHAR
TEXT
STRING
Which layer of the IoT architecture is responsible for data processing and decision-making?
Perception layer
Network layer
Application layer
Middleware layer
What is the output of the following Python code?
x = [1, 2, 3]
print(x * 2)
[1, 2, 3, 1, 2, 3]
[2, 4, 6]
Error
123123
The Boolean expression A’B + AB’ represents which gate?
XOR
XNOR
NAND
NOR
What is the default subnet mask for a Class C IPv4 address?
255.255.0.0
255.255.255.0
255.0.0.0
255.255.255.255
In IoT systems, which addressing method is commonly used to identify individual devices on a network?
MAC address
DNS
URL
HTTP ID
What is the output of the following?
print([] or [0])
[]
[0]
0
None
Which SQL statement is used to remove duplicate rows from the result set?
DISTINCT
UNIQUE
REMOVE
CLEAN
Which layer of the OSI model is responsible for encryption and compression?
Application
Presentation
Session
Transport
Which of these is NOT a characteristic of IoT devices?
Low power consumption
Always-on internet connectivity
Ability to operate completely offline indefinitely
Data exchange capability
In IoT security, which term refers to ensuring that data cannot be modified by unauthorized parties?
Authentication
Confidentiality
Integrity
Non-repudiation
What will be the output?
x = (1, 2, 3)
x[0] = 5
(5, 2, 3)
Error
[5, 2, 3]
None
What is the output?
print(type({}))
<class 'set'>
<class 'dict'>
<class 'list'>
<class 'tuple'>
Which of the following is not a valid aggregate function in MySQL?
SUM()
COUNT()
MAX()
ADD()
Which network device operates at the Data Link Layer of the OSI model?
Router
Switch
Hub
Gateway
Which IEEE standard defines Wireless Personal Area Networks often used in IoT devices like Zigbee?
IEEE 802.11
IEEE 802.15.4
IEEE 802.3
IEEE 802.15.1
What will this code print?
print('5' * 3 + '2')
5552
152
Error
552
What will be the output?
print(bool(0), bool(0.0), bool(0j))
True True True
False False False
False True True
Error
What does the following Python code print?
a = [1, 2, 3]
b = a
b.append(4)
print(a)
[1, 2, 3]
[1, 2, 3, 4]
Error
[4, 1, 2, 3]
Which of the following expressions will evaluate to True in Python?
0 == False
1 == True
bool("False")
All of the above
What is the binary representation of hexadecimal 7F? 1111111
(a)
In computing, what is the term for one quadrillion bytes?
(a)
What is the maximum number of different values that can be represented with 8 bits?
(a)
What is the hexadecimal representation of the binary number 101101111100?
(a)
Which protocol does SNMP use by default for network management?
(a)
