H19-301_V4.0 Exam Dumps : HCSA-Presales-IP Network V4.0

Thefive-layer TCP/IP modelconsists of the following layers:

Application layer

Transport layer

Network layer

Data link layer

Physical layer

A. Application layer– Handles application-level protocols (e.g., HTTP, FTP).

B. Network layer– Handles logical addressing and routing (e.g., IP).

D. Transport layer– Manages end-to-end connections and reliability (e.g., TCP, UDP).

C. Radio layeris not part of the standard TCP/IP model — it's relevant in wireless physical-layer communication, butnot defined in the TCP/IP layering structure.

The wireless throughput of an AP is primarily influenced by physical layer factors such as:

A. Spatial Streams: More spatial streams allow more simultaneous data channels.

B. Frequency Bandwidth: Wider channels (e.g., 40 MHz, 80 MHz, or 160 MHz) allow more data to be transmitted.

D. SNR: Higher signal-to-noise ratio leads to higher modulation levels and throughput.

Option C (CPU performance) affects the system's ability to process traffic at the application or system level, but not the physical-layer wireless rate. CPU performance may affect total packet forwarding but is not directly a factor in wireless transmission rate.

TheNetEngine 8000 M14 and M8aremodular high-performance WAN routers. Theirdepth is significantly more than 220 mm. For example:

NetEngine 8000 M8: Approx.600 mmdepth

NetEngine 8000 M14: Larger chassis — deeper than600 mm

A depth of220 mmwould be typical of very compact devices (e.g., small access routers), not these high-capacity modular systems.