Deprecated: LayerShifter\TLDSupport\Helpers\Arr::first(): Implicitly marking parameter $callback as nullable is deprecated, the explicit nullable type must be used instead in /home/ashikghm/public_html/khullanote/public_html/application/third_party/domain-parser/layershifter/tld-support/src/Helpers/Arr.php on line 23

Deprecated: LayerShifter\TLDSupport\Helpers\Arr::last(): Implicitly marking parameter $callback as nullable is deprecated, the explicit nullable type must be used instead in /home/ashikghm/public_html/khullanote/public_html/application/third_party/domain-parser/layershifter/tld-support/src/Helpers/Arr.php on line 47

Deprecated: Return type of LayerShifter\TLDExtract\Result::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/ashikghm/public_html/khullanote/public_html/application/third_party/domain-parser/layershifter/tld-extract/src/Result.php on line 189

Deprecated: Return type of LayerShifter\TLDExtract\Result::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/ashikghm/public_html/khullanote/public_html/application/third_party/domain-parser/layershifter/tld-extract/src/Result.php on line 203

Deprecated: Return type of LayerShifter\TLDExtract\Result::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/ashikghm/public_html/khullanote/public_html/application/third_party/domain-parser/layershifter/tld-extract/src/Result.php on line 251

Deprecated: Return type of LayerShifter\TLDExtract\Result::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/ashikghm/public_html/khullanote/public_html/application/third_party/domain-parser/layershifter/tld-extract/src/Result.php on line 267

Deprecated: Constant E_STRICT is deprecated in /home/ashikghm/public_html/khullanote/public_html/system/core/Exceptions.php on line 75

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_DB_mysqli_driver::$failover is deprecated

Filename: database/DB_driver.php

Line Number: 371

Backtrace:

File: /home/ashikghm/public_html/khullanote/public_html/application/config/config.php
Line: 338
Function: DB

File: /home/ashikghm/public_html/khullanote/public_html/index.php
Line: 325
Function: require_once

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Data Communication and Computer Network

Data Communication and Computer Network

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A complete notes on Data Communication and Computer Network for loksewa, BIM and BCA students. Topics: Overview of network,LAN,WAN,MAN,...