Merge branch 'master' into master

README.md

@@ -601,9 +601,11 @@ Stop the instance, the type of the instance to match the desired RAM and start t
 <details>
 <summary>What is AWS WAF? Give an example of how it can used and describe what resources or services you can use it with</summary><br><b>
 </b></details>
+
 <details>
 <summary>What AWS VPN is used for?</summary><br><b>
 </b></details>
+
 <details>
 <summary>What is the difference between Site-to-Site VPN and Client VPN?</summary><br><b>
 </b></details>
@@ -940,7 +942,8 @@ As to fix it there are serveral options:
 3. You would look for your distro default $PATH variable, copy paste using method #1
 
 Note: There are many ways of getting errors like this: if bash_profile or any configuration file of your interpreter was wrongly modified; causing erratics behaviours,
-permissions issues, bad compiled software (if you compiled it by yourself)... there is no answer that will be true 100% of the time.</b>
+permissions issues, bad compiled software (if you compiled it by yourself)... there is no answer that will be true 100% of the time.
+</b>
 </p>
 </details>
 
@@ -1293,7 +1296,7 @@ execution or run forever
 </b></details>
 
 <details>
-<summary>What signal is used by default when you run 'kill <process id>'?</summary><br><b>
+<summary>What signal is used by default when you run 'kill *process id*'?</summary><br><b>
 <pre>
 The default signal is SIGTERM (15). This signal kills
 process gracefully which means it allows it to save current

coding/python/binary_search.py

@@ -2,9 +2,10 @@
 
 import random
 
-rand_num_li = sorted([random.randint(1, 50) for iter in range(10)])
+rand_num_li = sorted([random.randint(1, 50) for _ in range(10)])
 target = random.randint(1, 50)
 
+
 def binary_search(li, le, ri, target):
     if le <= ri:
         mid = ri + le // 2

scripts/main.py

@@ -0,0 +1,91 @@
+import pathlib
+
+p = pathlib.Path(__file__).parent.parent.joinpath('README.md')
+
+with open(p, 'rb') as f:
+    file_list = [line.rstrip() for line in f.readlines()]
+
+details_final_count = 0
+details_count = 0
+print(len(file_list))
+for q in file_list:
+    if b'<details>' in q:
+        details_count += 1
+    if b'</details>' in q:
+        details_final_count += 1
+print(details_count, details_final_count)
+
+# TODO Checkear que tenemos mismo numero de details tabs, aunque esto no asegura al 100%  que esta bien formateado.
+# Una vez que tenemos un número par, podemos más o menos estar seguros de que la cosa va bien, y hacer ya entonces
+# el checkeo de las demás tags.
+# Problema: No obtenemos el lugar de donde esta mal el details, entonces; hacerlo.
+# IDEA: comprobar que despues de un detail va un /detail y mas o menos supongo que podremos acotar, hacer pruebas.
+
+
+def get_question_list(f):
+
+    questions_list = []
+    temp = []
+    after_summary_tag = False
+
+    for line in f:
+        if line.startswith(b'<details>'):
+            temp.append(line)
+            after_summary_tag = True
+
+        elif after_summary_tag and line != b'' and b'</details>' not in line:
+            temp.append(line)
+
+        elif after_summary_tag and b'</details>' in line:
+            temp.append(line)
+            after_summary_tag = False
+
+            questions_list.append(temp)
+            temp = []
+
+    return questions_list
+
+
+def get_answered_questions(question_list) -> int:
+    c = 0
+    for q in question_list:
+        index = 0
+        for i in q:
+            if b'</summary>' in i:
+                index = q.index(i)
+        if q[index+1: len(q) - 1]:
+            # print(q[2: len(q) - 1], '-->', q)
+            c += 1
+    return c
+
+
+def check_even_tags(question_list):
+    summary_count = 0
+    details_count = 0
+    # details count not necessary cus we already have that checked beforehand
+    for q in question_list:
+        print(q)
+        for l in q:
+            print(l)
+            if b'<details>' in l:
+                details_count += 1
+            if b'<summary>' in l:
+                summary_count += 1
+            if b'</details>' in l:
+                details_count += 1
+            if b'</summary>' in l:
+                summary_count += 1
+            print(summary_count, details_count)
+        if summary_count != 2 or details_count != 2:
+            raise Exception(f'You are missing a tag in {q}')
+        details_count = 0
+        summary_count = 0
+
+
+# check_even_tags(get_question_list(file_list))
+
+
+# if __name__ == '__main__':
+#     q_list = get_question_list(file_list)
+#     print(len(q_list))
+#     print(get_answered_questions(q_list))

scripts/tests/test.py

@@ -0,0 +1,29 @@
+import unittest
+import pathlib
+
+from scripts.main import get_answered_questions, get_question_list
+
+
+def open_test_case_file(n: int):
+    p = pathlib.Path(rf'D:\PycharmProjects\devops-interview-questions\scripts\tests\testcase{n}.md')
+
+    with open(p, 'rb') as f:
+        file_list = [line.rstrip() for line in f.readlines()]
+    return file_list
+
+
+class QuestionCount(unittest.TestCase):
+    solutions = (
+
+    )
+
+    def test_count_case_1(self):
+        raw_list = open_test_case_file(1)
+        question_list = get_question_list(raw_list)
+        answers = get_answered_questions(question_list)
+
+        self.assertEqual(len(question_list), 21)
+        self.assertEqual(answers, 2)
+
+    def test_count_case_2(self):
+        pass

scripts/tests/testcase1.md

@@ -0,0 +1,101 @@
+<details>
+<summary>What objects in S3 consists of?
+  * Another way to ask it: explain key, value, version id and meta data in context of objects</summary><br><b>
+</b></details>
+
+<details>
+<summary>Explain data consistency</summary><br><b>
+</b></details>
+
+<details>
+<summary>Can you host dynamic websites on S3?. What about static websites?</summary><br><b>
+</b></details>
+
+<details>
+<summary>What security measures have you taken in context of S3?</summary><br><b>
+</b></details>
+
+<details>
+<summary>What is a storage class? What storage classes are you familiar with?</summary><br><b>
+</b></details>
+
+##### EC2
+
+<details>
+<summary>What is EC2? What is it used for?</summary><br><b>
+</b></details>
+
+<details>
+<summary>What EC2 pricing models are there?</summary><br><b>
+</b></details>
+
+<details>
+<summary>How to increase RAM for a given EC2 instance?</summary><br><b>
+
+Stop the instance, the type of the instance to match the desired RAM and start the instance.
+</b></details>
+
+<details>
+<summary>What is an AMI?</summary><br><b>
+</b></details>
+
+<details>
+<summary>How many storage options are there for EC2 Instances?</summary><br><b>
+</b></details>
+
+<details>
+<summary>What happens when an EC2 instance is stopped or terminated?</summary><br><b>
+</b></details>
+
+<details>
+<summary>What are Security Groups?</summary><br><b>
+</b></details>
+
+<details>
+<summary>How to migrate an instance to another availability zone?</summary><br><b>
+</b></details>
+
+<details>
+<summary>What are spot instances?</summary><br><b>
+</b></details>
+
+##### CloudFront
+
+<details>
+<summary>Explain what is CloudFront and what is it used for</summary><br><b>
+</b></details>
+
+<details>
+<summary>Explain the following
+  * Origin
+  * Edge location
+  * Distribution</summary><br><b>
+</b></details>
+
+<details>
+<summary>What delivery methods available for the user with CDN?</summary><br><b>
+</b></details>
+
+<details>
+<summary>True or False?. Objects are cached for the life of TTL</summary><br><b>
+</b></details>
+
+##### Load Balancers
+
+<details>
+<summary>What types of load balancers are supported in EC2 and what are they used for?</summary><br><b>
+
+  * Application LB - layer 7 traffic
+  * Network LB - ultra-high performances or static IP address
+  * Classic LB - low costs, good for test or dev environments
+</b></details>
+
+##### AWS Security 
+
+<details>
+<summary>What is the shared responsibility model? In other words, what AWS is responsible for and what the user is responsible for in regards to Security?</summary><br><b>
+</b></details>
+
+<details>
+<summary>What is the AWS compliance program?</summary><br><b>
+</b></details>

scripts/tests/testcase2.md

@@ -0,0 +1,92 @@
+<details>
+<summary>Explain what each of the following services is used for
+
+  * AWS Inspector
+  * AWS Artifact
+  * AWS Shield</summary><br><b>
+</b></details>
+
+<details>
+<summary>What is AWS WAF? Give an example of how it can used and describe what resources or services you can use it with</summary><br><b>
+</b></details>
+
+<details>
+<summary>What AWS VPN is usef for?</summary><br><b>
+</b></details>
+
+<details>
+<summary>What is the difference between Site-to-Site VPN and Client VPN?</summary><br><b>
+</b></details>
+
+<details>
+<summary>True or False? AWS Inspector can perform both network and host assessments</summary><br><b>
+
+True
+</b></details>
+
+#### AWS Databases
+
+<details>
+<summary>What is RDS?</summary><br><b>
+</b></details>
+
+<details>
+<summary>What are some features or benefits of using RDS?</summary><br><b>
+
+1. Multi AZ - great for Disaster Recovery
+2. Read Replicas - for better performances
+</b></details>
+
+<details>
+<summary>What is EBS?</summary><br><b>
+</b></details>
+
+#### AWS Networking
+
+<details>
+<summary>What is VPC?</summary><br><b>
+</b></details>
+
+<details>
+<summary>Explain Security Groups and Network ACLs</summary><br><b>
+</b></details>
+
+#### Misc
+
+<details>
+<summary>Explain what are the following services and give an use case example for each one them:
+
+  * CloudTrail
+  * CloudWatch
+  * CloudSearch</summary><br><b>
+</b></details>
+
+
+## Network
+
+<a name="network-beginner"></a>
+#### :baby: Beginner
+
+<details>
+<summary>What is Ethernet?</summary><br><b>
+</b></details>
+
+<details>
+<summary>What is a MAC address? What is it used for?</summary><br><b>
+</b></details>
+
+<details>
+<summary>When is this MAC address used?: ff:ff:ff:ff:ff:ff</summary><br><b>
+</b></details>
+
+<details>
+<summary>What is an IP address?</summary><br><b>
+</b></details>
+
+<details>
+<summary>Explain subnet mask and given an example</summary><br><b>
+</b></details>
+
+<details>
+<summary>What is a private IP address? What do we need it for?</summary><br><b>
+</b></details>