Examkin

Soru

Zorluk: OrtaOSI Model Layers and Functions

While analyzing a network trace captured from an enterprise server, a network technician inspects a protocol header containing source and destination port numbers, sequence tracking numbers, and window sizing information. At which layer of the OSI model does this header operate, and what is its primary responsibility?

  1. Transport layer (Layer 4), which manages end-to-end communication control, process multiplexing, and data flow regulation.Cevap
  2. B
    Network layer (Layer 3), which provides logical IP addressing, packet fragmentation, and path determination across subnets.
  3. C
    Data Link layer (Layer 2), which controls physical MAC addressing, media access control, and hop-to-hop frame delivery.
  4. D
    Session layer (Layer 5), which establishes, maintains, and synchronizes application dialogue state between connected end points.

Cevap

Transport layer (Layer 4), which manages end-to-end communication control, process multiplexing, and data flow regulation.
The correct answer identifies the Transport layer (Layer 4). Port numbers, sequence numbers, and window size controls are defined at Layer 4 to manage end-to-end delivery, application multiplexing, and communication flow control.

Adım Adım Çözüm

1
Examine the fields identified in the header capture.
The fields identified include port numbers, sequence numbers, and window sizing parameters.
These specific fields belong to Layer 4 transport layer protocol headers such as TCP.
2
Map these header parameters to their respective OSI layer functions.
Port numbers provide process-to-process multiplexing while sequence numbers and window sizes regulate reliable data transfer at Layer 4.
Layer 4 (Transport layer) is specifically designed to handle end-to-end data integrity, multiplexing via ports, and flow control.

Anahtar Kavram

OSI Transport Layer (Layer 4) Protocol Header Functions
Bu soruyu puanla

Konular

OSI Model Layers and Functions

Bu konudan daha fazla soru