Installing Python on your computer is straightforward. Here’s a step-by-step guide for different operating systems:
Download Python:
Run the Installer:
.exe file to start the installation process.Verify the Installation:
python --version or python -V and press Enter. You should see the installed Python version displayed.
10.0.0.0/16).10.0.0.0/16
10.0.0.0/24 (For web servers)10.0.1.0/24 (For database servers)10.0.2.0/24 (For internal services)A VCN (Virtual Cloud Network) in Oracle Cloud Infrastructure (OCI) is a customizable, private network that you create within your Oracle Cloud tenancy. It allows you to securely connect your cloud resources, such as Compute Instances, Databases, and other services, within a logically isolated network. The VCN functions similarly to a traditional on-premises network but is built and managed in the cloud.
Isolation: A VCN is isolated from other networks in Oracle Cloud. It allows you to have a private networking environment, where you control all aspects of networking.
Customizable Network: You can configure the VCN with your own IP address ranges, subnets, route tables, and security lists, allowing you to design the network according to your requirements.
Private Connectivity: VCN allows private communication between resources within the network without needing to expose them to the public internet.
Secure: You can use Network Security Groups (NSGs) and Security Lists to control traffic within the VCN and to/from your instances, enhancing security.
A VCN in Oracle Cloud consists of several components that work together to provide a fully functional network.
CIDR Block:
10.0.0.0/16 defines a range of IP addresses available to the VCN.Subnets:
Internet Gateway:
Route Tables:
Dynamic Routing Gateway (DRG):
NAT Gateway:
Security Lists and Network Security Groups (NSGs):
VCN Peering:
In Oracle Cloud Infrastructure (OCI), a Compute Instance refers to a virtual machine (VM) that runs on the cloud infrastructure. It is essentially a server in the cloud where you can deploy applications, run workloads, and manage services in a scalable and flexible environment. Compute instances in Oracle Cloud can be configured to suit various computing needs, from lightweight tasks to large-scale enterprise applications.
Virtual Machines (VMs):
Types of Compute Instances:
Oracle Cloud offers different instance types for specific use cases:
Image Selection:
When creating a compute instance, you can choose the operating system (OS) or pre-configured image that you want to run. This could be:
Customization:
You can customize the compute instance to suit your needs:
Networking:
Access and Security:
Auto-Scaling:
Monitoring:
Lifecycle Management:
After creating the instance, you can access it and start deploying your applications or services.
Here are some basic Python interview questions for beginners, along with their brief explanations. These questions cover key concepts in Python programming and will help you prepare for interviews:
int, float, complexlist, tuple, rangestrdictset, frozensetboolbytes, bytearray, memoryviewExample:
my_list = [1, 2, 3, "apple"]
[].().Example:
my_list = [1, 2, 3]
my_tuple = (1, 2, 3)
Example:
my_dict = {"name": "John", "age": 25}
def keyword.Example:
def greet(name):
return f"Hello, {name}!"
break, continue, and pass?break: Terminates the current loop and moves control to the next statement.continue: Skips the current iteration of the loop and moves to the next iteration.pass: A placeholder used when no action is required in a loop or conditional statement (i.e., a “no-op”).for loop: Iterates over a sequence (e.g., a list or range).while loop: Repeats as long as a condition is true.Example:
for i in range(5):
print(i)
if: Executes a block of code if the condition is true.elif: Checks additional conditions if the previous if condition is false.else: Executes if none of the above conditions are true.Example:
if age > 18:
print("Adult")
else:
print("Minor")
Example:
class Person:
def __init__(self, name, age):
self.name = name
self.age = age
def greet(self):
return f"Hello, my name is {self.name}!"
Example:
class Animal:
def speak(self):
return "Animal speaking"
class Dog(Animal):
def speak(self):
return "Bark"
is and == in Python?==: Checks if the values of two variables are equal.is: Checks if two variables refer to the same object in memory.lambda keyword. It can take any number of arguments but can only have one expression.Example:
add = lambda x, y: x + y
print(add(3, 4)) # Output: 7
try, except, else, and finally blocks.Example:
try:
num = int(input("Enter a number: "))
except ValueError:
print("Invalid input!")
Example:
import math
print(math.sqrt(16)) # Output: 4.0
del and remove() in Python?del: Deletes a variable or an item from a list by its index.remove(): Removes the first occurrence of a specified value from a list.Example:
def decorator(func):
def wrapper():
print("Before function call")
func()
print("After function call")
return wrapper
@decorator
def say_hello():
print("Hello!")
say_hello()
What is the difference between a “Full” and “Patch” backup in Oracle EBS 12.2?
What is recommended for database backups in a production environment?
What are the common methods to apply patches in Oracle EBS 12.2?
What is the purpose of Oracle EBS Patch Wizard?
What are the important things to check before applying a patch in Oracle EBS 12.2?
What is Database and Application Tier Upgrades in Oracle EBS?
Explain the purpose of adpreclone and adclone in Oracle EBS.
What is Oracle EBS Database Cloning?
What is the difference between adpreclone and adclone in Oracle EBS 12.2?
What are some common Oracle EBS DBA tasks for maintaining performance and availability?
What is the role of Oracle Data Guard in Oracle EBS?