Examkin

Question

Difficulty: MediumNetwork Components Roles and Functions

A network engineer is deploying new infrastructure across a multi-site enterprise network. Match each network component on the left to its primary operational function on the right.

  • RouterEvaluates Layer 3 IP headers to forward packets between different IP subnets and isolate broadcast domains.
  • Next-Generation Firewall (NGFW)Performs stateful packet filtering, deep packet inspection, and threat prevention at the network boundary.
  • Wireless LAN Controller (WLC)Centralizes radio resource management, access point provisioning, and wireless mobility management.
  • Layer 2 SwitchForwards frames within the same local network segment based on destination MAC address table lookups.

Answer

Router matches with evaluating Layer 3 IP headers to forward packets between subnets. Next-Generation Firewall (NGFW) matches with stateful packet filtering, deep packet inspection, and threat prevention. Wireless LAN Controller (WLC) matches with centralizing radio resource management, AP provisioning, and mobility. Layer 2 Switch matches with forwarding frames within the same local network segment based on destination MAC addresses.
Each component is mapped to its core operational role: Routers perform Layer 3 path determination between distinct IP subnets; Next-Generation Firewalls conduct stateful security filtering and deep packet inspection; Wireless LAN Controllers manage and provision lightweight access points centrally; and Layer 2 Switches perform MAC address-based frame switching within a local broadcast domain.

Step-by-Step Solution

1
Identify the primary operating OSI layer and function of a Router.
Routers operate at Layer 3 (Network layer), making forwarding decisions using IP addresses to route packets between different networks.
Routing across subnet boundaries requires network layer addressing and broadcast domain separation.
2
Identify the distinct security enforcement capabilities of an NGFW.
NGFWs inspect traffic statefully across multiple OSI layers, enforcing security policies, IPS, and application awareness.
Firewalls protect network perimeters by filtering unauthorized or malicious traffic.
3
Determine the management role of a Wireless LAN Controller (WLC).
WLCs provide centralized management for lightweight access points, handling RF configuration, roaming, and security policies.
Split-MAC wireless architectures centralize control-plane functions on the WLC.
4
Determine the forwarding behavior of a Layer 2 Switch.
Layer 2 switches inspect Ethernet frames and use the MAC address table to forward traffic within a single broadcast domain.
Switches handle local network frame switching at Layer 2 without modifying IP headers.

Key Concept

Network Components Roles and Functions
Rate this question

Topics

Network Components Roles and Functions

More questions from this topic