Understanding Network Fundamentals: From VLANs to Routing Protocols
Virtual LAN (VLAN)
VLAN (Virtual LAN) is a concept used in computer networks to logically separate devices within a local area network (LAN). Here are the key points:
Definition
- A VLAN creates isolated broadcast domains within a single physical network.
- Devices in the same VLAN can communicate with each other as if they are on a separate network.
- VLANs are defined at the data link layer (Layer 2) of the OSI model.
Purpose
- Segmentation: VLANs allow network administrators to group devices based on functional
Understanding Class Imbalance, Pipelines, and Model Comparison in Machine Learning
Class Imbalance and Dummy Classifiers
Class Imbalance: Class imbalance occurs when the distribution of classes in a dataset is unequal, meaning one class (e.g., apples) is significantly more prevalent than another (e.g., oranges). This data characteristic can bias machine learning models towards predicting the majority class.
Dummy Classifier: A dummy classifier is a machine learning model that doesn’t learn from data but follows a simple rule for predictions. In class imbalance, a dummy classifier
Read MoreDynamic Memory Management in C: Linked Lists and Sparse Matrices
Mark and Sweep The Mark Sweep algorithm is as straightforward as its name suggests. It consists of two phases: a mark phase and a sweep phase. The collector crawls across all the roots (global variables, local variables, stack frames, virtual and hardware registers, and so on) and marks every item it meets by setting a bit anywhere around that object during the mark phase. It also walks across the heap during the sweep phase, reclaiming memory from all the unmarked items.
Sweep() is a simple function
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C Programming Examples: Matrices, Strings, and Structures
C Program for 2×2 Matrix Addition
Code:
#include <stdio.h>
int main() {
int matrix1[2][2] = {{1, 2}, {3, 4}};
int matrix2[2][2] = {{5, 6}, {7, 8}};
int result[2][2];
int i, j;
// Adding matrices
for (i = 0; i < 2; i++) {
for (j = 0; j < 2; j++) {
result[i][j] = matrix1[i][j] + matrix2[i][j];
}
}
// Displaying the result
printf("Sum of matrices:\n");
for (i = 0; i < 2; i++) {
for (j = 0; j < 2; j++) {
Distributed Computing for Large Language Models: Scalability, Speed, and Fault Tolerance
Paged Data Access to DRAM
Basic Idea: “Split” data file (virtually or physically) and stage reads of its pages from disk to DRAM (vice versa for writes)
Page Management in DRAM Cache
- ❖ Caching: Retaining pages read from disk in DRAM
- ❖ Eviction: Removing a page frame’s content in DRAM
- ❖ Spilling: Writing out pages from DRAM to disk
Cache Replacement Policy
The algorithm that chooses which page frame(s) to evict when a new page has to be cached but the OS cache in DRAM is full
- ❖ Popular policies