Adaface vs

 imocha

Codility

---

HackerRank

---

Mettl

---

IKM

---

TestDome

---

TestGorilla

---

eSkill

---

Vervoe

---

DevSkiller

---

Test4Geeks

---

                                            A 51% attack is perhaps the most discussed threat to any public Blockchain asset. A 51% attack happens when a certain miner or mining pool, that owns more than 50% of all the network’s hashing power, acts maliciously to disturb the network’s operation.
                                            

                                            For example: Two Bitcoin Cash mining pools, carried out a 51% attack on the Bitcoin Cash blockchain in order to stop an unknown miner from taking coins that they weren’t supposed to have access to, while the network forked.
                                            

                                            Which of the following CAN be done by a miner employing a 51% attack?
                    
                    A: Double spend their coins
                    B: Reverse confirmed transactions
                    C: Steal funds from a certain address
                    D: Prevent transactions from being confirmed
                    E: Create false transactions that never happened
                                            

                                            What is the best way to create following React Native layout with containers 1,2,3?
                                            

                                            Our client, Naval Ravikant who is a very popular angel investor wrote a blog post which went viral. There are a very large number of comments on his blog post. Which of the following snippets of code should we add to the post model to define a one-to-many relationship?
                                            

                                            What will the following code output?
                                            

                                            A: 24 after 5 seconds and after another 5 seconds, another 24
                    B: 24 followed by another 24 immediately
                    C: 24 immediately and another 24 after 5 seconds
                    D: After 5 seconds, 24 and 24
                    E: Undefined
                    F: NaN
                    G: None of these
                                            

                                            Depp works as Google Cloud Architect at Amber Inc. Deep created an instance with following firewall rules:
                                            

                                            NAME: ssh-allow
                    NETWORK: testnet
                    DIRECTION: INGRESS
                    PRIORITY: 100
                    ALLOW: tcp:22
                    
                    NAME: deny-everything
                    NETWORK: testnet
                    DIRECTION: INGRESS
                    PRIORITY: 400
                    DENY: tcp:0-65535,udp:0-6553
                                            

                                            What would happen if Depp tries SSH to the instance now?
                    
                    A: SSH would be denied as the deny rule overrides the allow
                    B: SSH would be allowed as the allow rule overrides the deny
                    C: SSH would be denied and would need instance reboot for the to allow rule to take effect
                    D: SSH would be denied and would need gcloud firewall refresh command for the allow rule to take effect
                                            

                                            Which of the following statements about this code are true?
                                            

                                            A: The CommonsChunkPlugin is built-in feature that creates a separate file (known as a chunk), consisting of common modules shared between multiple entry points
                    
                    B: This code creates separate file: common.js which contains common modules from home and profile chunks.
                    
                    C: This results in pagespeed optimizations as the browser can quickly serve the shared code from cache
                    
                    D: This plugin does not effect page speed much since browser is forced to load a larger bundle whenever a new page is visited.
                                            

                                            Below we are given the traffic data for a few URLs of adaface.com:
                                            

                                            Which of the following are correct?
                    
                    A: Low bounce rate of adaface.com/aptitude-tests/ might be because of relevant content in the page
                    B: adaface.com/aptitude-tests/ has lowest bounce rate solely because of lowest page load time
                    C: adaface.com/team bounce rate is high due to high page load time
                    D: adaface.com bounce rate is high because it has a lot of irrelevant content
                    E: Heavy image in the first fold can increase page load time
                    F: Incorrect canonical URL can increase page load time