t-SNE is particularly known for preserving which kind of structures from the high-dimensional data in the low-dimensional representation?
- Global Structures
- Local Structures
- Numerical Structures
- Geometric Structures
t-SNE is known for preserving local structures in the low-dimensional representation, making it effective for visualization and capturing fine-grained relationships.
When both precision and recall are important for a problem, one might consider optimizing the ________ score.
- Accuracy
- F1 Score
- ROC AUC
- Specificity
The F1 Score is a measure that balances both precision and recall. It is especially useful when you want to consider both false positives and false negatives in your classification problem.
When using K-means clustering, why is it sometimes recommended to run the algorithm multiple times with different initializations?
- To ensure deterministic results.
- To make the algorithm run faster.
- To mitigate sensitivity to initial cluster centers.
- To reduce the number of clusters.
K-means clustering is sensitive to initial cluster centers. Running it multiple times with different initializations helps find a more stable solution.
________ is a technique where during training, random subsets of neurons are ignored, helping to make the model more robust.
- Dropout
- Regularization
- Batch Normalization
- Activation Function
Dropout is a regularization technique that involves randomly deactivating a fraction of neurons during training. This helps prevent overfitting, making the model more robust and less dependent on specific neurons.
Which component in Docker acts as a lightweight, stand-alone, executable software package that includes everything needed to run a piece of software?
- Docker image
- Docker container
- Dockerfile
- Docker daemon
A Docker image is a lightweight, stand-alone, executable software package that includes everything needed to run a piece of software, including code, runtime, system tools, and libraries. Docker containers are instantiated from these images.
You are troubleshooting a connectivity issue on a server. You need to identify all active connections to and from the server. Which command would be most suitable for this purpose?
- netstat
- ifconfig
- ps
- top
To identify all active connections to and from a server in Linux, you would use the netstat command. netstat provides information about network connections, routing tables, interface statistics, masquerade connections, and more. It's a valuable tool for network troubleshooting.
To manage user authentication in an enterprise setting, Linux systems can integrate with _________ directories for centralized account management.
- Active Directory
- LDAP
- NIS
- RADIUS
To manage user authentication in an enterprise setting, Linux systems can integrate with LDAP (Lightweight Directory Access Protocol) directories for centralized account management. LDAP allows Linux systems to access user account information stored in a centralized directory, making it easier to manage users and their permissions across the network.
A colleague asks you to temporarily disable a user's access without deleting their account. Which Linux command allows you to achieve this?
- passwd -l
- userdel
- chmod 000
- usermod -s /sbin/nologin
To temporarily disable a user's access without deleting their account, you can use the 'passwd -l' command. This locks the user's password, preventing them from logging in until the password is unlocked.
For performance enhancement, QEMU often pairs with which Linux kernel module?
- KVM
- SELinux
- LXC
- XFS
For performance enhancement, QEMU often pairs with the Linux Kernel-based Virtual Machine (KVM) module. KVM is a kernel module that allows QEMU to leverage hardware virtualization extensions, resulting in better performance for virtual machines.
You've been tasked with setting up static IP configurations for multiple interfaces on a Linux server. In which directory and/or file would you primarily focus your configuration efforts?
- /etc/network/interfaces
- /etc/resolv.conf
- /etc/hostname
- /etc/hosts
When configuring static IP addresses for network interfaces in Linux, you would primarily focus your efforts on the "/etc/network/interfaces" file. This file is used to define network interface configurations, including static IP settings.