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NP > Switch Questions > Flashcards

Switch Questions Flashcards

General Sw Questions

1
Q

What effect does the mac address-table aging-time 180 command have on the MAC address-table?
A. This is how long a dynamic MAC address will remain in the CAM table.
B. The MAC address-table will be flushed every 3 minutes.
C. The default timeout period will be 360 seconds.
D. ARP requests will be processed less frequently by the switch.
E. The MAC address-table will hold addresses 180 seconds longer than the default of 10 minutes.

A

A. This is how long a dynamic MAC address will remain in the CAM table.

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2
Q 
In a Cisco switch, what is the default period of time after which a MAC address ages out and is discarded?
A. 100 seconds
B. 180 seconds
C. 300 seconds
D. 600 seconds
A

C. 300 seconds

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3
Q

If a network engineer applies the command mac-address-table notification mac-move on a Cisco switch port, when is a syslog message generated?
A. A MAC address or host moves between different switch ports.
B. A new MAC address is added to the content-addressable memory.
C. A new MAC address is removed from the content-addressable memory.
D. More than 64 MAC addresses are added to the content-addressable memory.

A

A. A MAC address or host moves between different switch ports.

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4
Q

The network monitoring application alerts a network engineer of a client PC that is acting as a rogue DHCP server. Which two commands help trace this PC when the MAC address is known? (Choose two)
A. switch# show mac address-table
B. switch# show port-security
C. switch# show ip verify source
D. switch# show ip arp inspection
E. switch# show mac address-table address

A

A. switch# show mac address-table

E. switch# show mac address-table address

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5
Q

Which two statements apply to topology-based switching? (Choose 2)
A. It is functionally equivalent to Cisco Express Forwarding
B. It is the preferred switching mode in Cisco multilayer switches
C. It uses Loop free protocol for switching
D. disabled by default

A

A. It is functionally equivalent to Cisco Express Forwarding

B. It is the preferred switching mode in Cisco multilayer switches

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6
Q

What statement about MAC address table is true?
A. Every entry in MAC address table has VLAN assigned.
B. Extended VLANs doesn’t have VLAN assigned in MAC address table.

A

A. Every entry in MAC address table has VLAN assigned.

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7
Q

Switch(config)# snmp-server enable traps mac-notification
Switch(config)# mac address-table notification threshold
Switch(config)# mac address-table notification threshold limit 60
Switch(config)# mac address-table notification mac-move
——————
A. When a new workstation connects to port F0/1
B. When 61 MAC address are in the switch
C. When 61 percent of the Address table capacity is used
D. When the switch loses power and reboots
E. When the phone previously on Fa0/2 is connected/Moved to Fa0/5

A

C. When 61 percent of the Address table capacity is used

E. When the phone previously on Fa0/2 is connected/Moved to Fa0/5

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8
Q

What is the behavior of an access port when a tagged packet is received?
A. packet is dropped
B. tag is removed and packet is forwarded on the VLAN of the access port
C. tag is removed and packet is forwarded to the VLAN mentioned in the tag
D. forward to the native vlan

A

A. packet is dropped

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9
Q

Which switchport feature will block the packet with unknown MAC address from sending it via port.
A. switchport protect
B. switchport block unicast
C. switchport portfast
D. packet with unknown MAC will be dropped

A

B. switchport block unicast

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10
Q 
Which two features can you configure on a access port? (Choose two)
A. QinQ
B. Portfast
C. Voice VLAN
D. STP mode
E. 802.1q
A

B. Portfast

C. Voice VLAN

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11
Q

During the implementation of a voice solution, which two required items are configured at an access layer switch that will be connected to an IP phone to provide VoIP communication? (Choose two)
A. allowed codecs
B. untagged VLAN
C. auxiliary VLAN
D. Cisco Unified Communications Manager IP address
E. RSTP

A

B. untagged VLAN

C. auxiliary VLAN

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12
Q 
Which type of MAC address can be dropped by a switch that is configured for MAC address filtering?
A. unicast
B. router
C. multicast
D. CPU-destined
A

A. unicast

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13
Q

Which statement about the default behavior of a Cisco switch MAC address table is true?
A. MAC addresses are not learned on extended VLANs.
B. MAC addresses are aged out of the MAC table after 600 seconds.
C. MAC addresses are associated with a VLAN.
D. MAC address filtering is enabled on trunk ports.

A

C. MAC addresses are associated with a VLAN.

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14
Q

Which command can be used to block a frame with an unknown destination MAC address from being forwarded out of an interface?
A. switchport protected
B. It is not forwarded if the destination MAC address is unknown.
C. switchport port-fast
D. switchport block unicast

A

D. switchport block unicast

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15
Q

For which reason does an administrator disable MAC address learning within a VLAN?
A. to configure a VLAN as an SVI
B. to free up space in the MAC address table
C. to implement port security
D. to reduce flooding in the network

A

B. to free up space in the MAC address table

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16
Q

Which two statements about static MAC addresses are true? (Choose two)
A. They are configured without an aging time.
B. They have a default aging time of 300 seconds.
C. They supersede dynamically learned MAC address.
D. They can be configured on multiple interfaces in the same VLAN.
E. They have a default aging time of 60 seconds.

A

A. They are configured without an aging time.

D. They can be configured on multiple interfaces in the same VLAN.

17
Q 
Which switch management feature can you configure to drop traffic from specific source or destination addresses?
A. switchport port-security
B. static address entries
C. unicast MAC address filtering
D. MAC threshold notification traps
A

C. unicast MAC address filtering

18
Q 
A question about the effective way to handle unknown traffic?
A. broadcast storm
B. unicast storm
C. multicast storm
D. ARP
A

B. unicast storm

NP (21 decks)

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