SRWE

What is the significant difference between a hub and a Layer 2 LAN switch?

• A hub extends a collision domain, and a switch divides collision domains.
• A hub divides collision domains, and a switch divides broadcast domains.
• Each port of a hub is a collision domain, and each port of a switch is a broadcast domain.
• A hub forwards frames, and a switch forwards only packets.

How do switch buffers affect network performance?

• They provide error checking on the data received.
• They store frames received, thus preventing premature frame discarding when network congestion occurs.
• They provide extra memory for a particular port if autonegotiation of speed or duplex fails.
• They hold data temporarily when a collision occurs until normal data transmission resumes

Which statement is correct about Ethernet switch frame forwarding decisions?

• Frame forwarding decisions are based on MAC address and port mappings in the CAM table.
• Cut-through frame forwarding ensures that invalid frames are always dropped.
• Only frames with a broadcast destination address are forwarded out all active switch ports.
• Unicast frames are always forwarded regardless of the destination MAC address

Which switch characteristic helps keep traffic local and alleviates network congestion?

• high port density
• fast port speed
• large frame buffers
• fast internal switching

What information is added to the switch table from incoming frames?

• source MAC address and incoming port number
• destination MAC address and incoming port number
• source IP address and incoming port number
• destination IP address and incoming port number

Which switching method ensures that the incoming frame is error-free before forwarding?

• cut-through
• FCS
• fragment free
• store-and-forward

Under which two occasions should an administrator disable DTP while managing a local area network? (Choose two.)

• when connecting a Cisco switch to a non-Cisco switch
• when a neighbor switch uses a DTP mode of dynamic auto
• when a neighbor switch uses a DTP mode of dynamic desirable
• on links that should not be trunking
• on links that should dynamically attempt trunking

Which two characteristics describe the native VLAN? (Choose two.)

• Designed to carry traffic that is generated by users, this type of VLAN is also known as the default VLAN.
• The native VLAN traffic will be untagged across the trunk link.
• This VLAN is necessary for remote management of a switch.
• High priority traffic, such as voice traffic, uses the native VLAN.
• The native VLAN provides a common identifier to both ends of a trunk

On a switch that is configured with multiple VLANs, which command will remove only VLAN 100 from the switch?

• Switch# delete flash:vlan.dat
• Switch(config-if)# no switchport access vlan 100
• Switch(config-if)# no switchport trunk allowed vlan 100
• Switch(config)# no vlan 100

A network contains multiple VLANs spanning multiple switches. What happens when a device in VLAN 20 sends a broadcast Ethernet frame?

• All devices in all VLANs see the frame.
• Devices in VLAN 20 and the management VLAN see the frame.
• Only devices in VLAN 20 see the frame.