VPC a nini a AWS?

Question

VPC a nini a AWS?

IT Interview Practice · Accepted Answer

**VPC** (Virtual Private Cloud) shine naka ce **kaantacciyar hanyar sadarwa ta kirki** a cikin AWS — inda kake buɗe albarkatun (kamar EC2 instances) tare da iko kan IP ranges, subnets, routing, da tsaron. Ita ce tushen sadarwar albarkatun AWS.

## Abin da VPC ne

```text
A VPC is a logically ISOLATED virtual network in AWS that YOU control:
  → define your IP address range (CIDR block, e.g. 10.0.0.0/16)
  → divide it into SUBNETS; control ROUTING and security
  → your resources (EC2, RDS, etc.) live inside it, isolated from other networks
→ Like having your own private network in the cloud.
```

## Mahimman sassa

```text
SUBNET → a segment of the VPC's IP range, placed in one Availability Zone:
  PUBLIC subnet  → has a route to the internet (via an Internet Gateway) — for
    public-facing resources (web servers, load balancers)
  PRIVATE subnet → NO direct internet route — for backend resources (databases, app
    servers) that shouldn't be publicly reachable
INTERNET GATEWAY → connects the VPC to the internet (for public subnets)
NAT GATEWAY → lets PRIVATE subnet resources reach OUT to the internet (e.g. updates)
  without being reachable FROM the internet
ROUTE TABLES → control where traffic goes
SECURITY GROUPS / NACLs → firewalls controlling traffic to resources/subnets
```

## Gida mai yawa

```text
VPC (10.0.0.0/16)
  ├─ PUBLIC subnet  → load balancer, bastion (internet-facing)
  └─ PRIVATE subnet → app servers, DATABASE (no direct internet access — more secure)
→ Public subnet handles incoming traffic; private subnet protects backend resources.
```

## Me yasa ya shafi

Ganewa da VPCs yana da mahimmanci saboda su ne **tushen sadarwar** albarkatun AWS — kusan komai yana aiki a cikin VPC — saboda haka yana da mahimmanci san'ar AWS ta gida don shiɗa albarkatun cikin aminci.

VPC yana ba ka naka ce **kaantacciyar hanyar sadarwa ta kirki** a AWS inda kake iko kan IP ranges, subnets, routing, da tsaron, na ba ka iko na yin gida ga hanyar sadarwa kamar hanyar sadarwar gida amma a cikin gida.

Ganewa da **mahimman sassa** yana da mahimmanci don shiɗa albarkatun daidai: **subnets** (sassa na hanyar sadarwa, amma muhimmin ra'ayin nunawa su baje zuwa **jigon subnets** da iko da shafin intanet saboda albarkatun jikin jiya da **kulle subnets** marasa iko na jiya na intanet saboda albarkatun gida), **internet gateways** (jira ga intanet), **NAT gateways** (ba da izin albarkatun kulle su iso waje ba a waje ba), route tables, da security groups/NACLs (gidaje).

**Bambanta tsakanin jigon da kulle subnets yana da mahimmanci don aminci**: sanya albarkatun gida (musamman databases) a cikin **kulle subnets** — rufe daga iko na jiya na intanet yayin da jigon albarkatun (load balancers, web servers) suke amsawa da haɗi a cikin jigon subnets — shi shine tushen tsaron na gida wanda ke takaitawa bayyana tsaron gida na gida.

Ganewa da wannan gida na gida (jigon subnet don sassa ta intanet, kulle subnet da ke kare databases da app servers) yana nuni da san'ar tsaron gida mai kyau.

Saboda kusan dukkan albarkatun AWS suke aiki a cikin VPC da tsarin sadarwa mai kyau (musamman bambanta tsakanin jigon/kulle subnet) yana da mahimmanci don aminci, da saboda gane VPCs, subnets, da sassa yana da mahimmanci don shiɗa da aike da albarkatun AWS daidai da aminci, gane tushen VPC yana da mahimmanci, san'ar AWS ta gida — hanyar sadarwar tushe ta kuɗi AWS da jigon inda bambanta tsakanin jigon/kulle subnet aminci yana musamman mahimmanci don kare albarkatun gida, na sa shi yana muhimmin sani ga kowa da ke tsara AWS gida.

Abin da VPC ne

Mahimman sassa

Gida mai yawa

Me yasa ya shafi

Tambayoyi masu alaƙa