CCST CCST Network Devices & Infrastructure

Question 1

What is the primary function of a network switch compared to a hub?

Accepted Answer

A switch forwards traffic only to the destination MAC address port; a hub broadcasts to all ports

Answer

A switch broadcasts all traffic to every port; a hub forwards traffic only to the destination port

Answer

A switch operates at Layer 3; a hub operates at Layer 2

Answer

A switch uses wireless connections; a hub uses wired connections

Question 2

Which Cisco IOS command displays the MAC address table on a Catalyst switch?

Accepted Answer

show mac address-table

Answer

show ip arp

Answer

show interfaces

Answer

show cdp neighbors

Question 3

What is the purpose of Spanning Tree Protocol (STP) in a switched network?

Accepted Answer

To prevent Layer 2 switching loops by blocking redundant paths

Answer

To encrypt traffic between switches

Answer

To assign IP addresses to switch ports

Answer

To load-balance traffic across multiple uplinks

Question 4

Which device operates at Layer 3 of the OSI model and makes forwarding decisions based on IP addresses?

Accepted Answer

Router

Answer

Hub

Answer

Bridge

Answer

Layer 2 switch

Question 5

What does PoE (Power over Ethernet) allow network administrators to do?

Accepted Answer

Deliver electrical power to devices like IP phones and APs through the Ethernet cable

Answer

Transmit data faster over copper cabling

Answer

Connect multiple switches in a stack

Answer

Aggregate multiple links for increased bandwidth

Question 6

Which Cisco IOS command would you use to verify connectivity to a remote device and display round-trip time?

Accepted Answer

ping

Answer

traceroute

Answer

show ip route

Answer

debug ip packet