4.3 Configure SPAN/RSPAN/ERSPAN 350-401 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   How does RSPAN transport mirrored traffic between switches?

   • ABy using a direct fiber connection between the source and destination switches
   • BBy encapsulating the traffic in GRE and sending it over an IP network
   • CBy using a dedicated VLAN that is trunked between the switches
   • DBy sending the traffic to a multicast group that the destination switch joins
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   Which of the following is a known limitation of SPAN?

   • ASPAN can only monitor traffic on a single VLAN at a time
   • BSPAN can drop packets if the destination port cannot handle the traffic rate
   • CSPAN can only be configured on Cisco Catalyst 9000 series switches
   • DSPAN cannot monitor traffic on trunk ports
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   In which scenario would a network engineer most likely use SPAN?

   • ATo capture traffic on a specific switch port for analysis with a protocol analyzer
   • BTo enforce quality of service policies on voice traffic
   • CTo provide high availability by failing over to a backup link
   • DTo route traffic between two different VLANs on the same switch
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   Which encapsulation protocol does ERSPAN use to transport mirrored traffic?

   • AVXLAN
   • BIPsec
   • CGRE
   • DMPLS
   Reveal Solution Discussion Select an answer first
6. 5expert · hard

   A network engineer is planning to monitor traffic on a high-availability link between two core switches. The engineer is concerned about the impact of SPAN on the switch's performance. The switch is already operating at high CPU utilization. What is the most important consideration before configuring SPAN?

   • ASPAN will drop all traffic on the source port if the destination port is congested.
   • BSPAN can cause significant CPU load on the switch, potentially impacting forwarding performance.
   • CSPAN requires a dedicated hardware module to operate, which is not available on all switches.
   • DSPAN will only monitor ingress traffic, so egress traffic will not be affected.
   Reveal Solution Discussion Select an answer first