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Switch Questions CCNA 200-120

in New CCNA 200-120 on May 13, 2014

Why will a switch never learn a broadcast address?

A. Broadcast frames are never sent to switches.
B. Broadcast addresses use an incorrect format for the switching table.
C. A broadcast address will never be the source address of a frame.
D. Broadcasts only use network layer addressing.
E. A broadcast frame is never forwarded by a switch.
Correct Answer: C

The network administrator normally establishes a Telnet session with the switch from host A. The
administrator’s attempt to establish a connect via Telnet to the switch from host B fails, but pings from host B to
other two hosts are successful. What is the issue for this problem?

A. Host B and the switch need to be in the same subnet.
B. The switch needs an appropriate default gateway assigned.
C. The switch interface connected to the router is down.
D. Host B need to be assigned an IP address in vlan 1.
Correct Answer: B

Host A ( and the management IP address of the Switch ( are in the same subnet so
telnet from host A to the switch can be successful even if a default gateway is not set on host A.

But host B ( and the management IP address of the Switch ( are not in the same subnet so host B needs a default gateway to telnet to the switch. The default gateway on host B should be

What does a Layer 2 switch use to decide where to forward a received frame?
A. source MAC address
B. source IP address
C. source switch port
D. destination IP address
E. destination port address
F. destination MAC address

Correct Answer: F

How many broadcast domains are shown in the graphic assuming only the default vlan is configured on the

A. one
B. six
C. twelve
D. two

Correct Answer: A

Refer to the exhibit. Which of these statements correctly describes the state of the switch once the boot
process has been completed?

A. As FastEthernet0/12 will be the last to come up, it will not be blocked by STP.
B. Remote access management of this switch will not be possible without configuration change.
C. More VLANs will need to be created for this switch.
D. The switch will need a different IOS code in order to support VLANs and STP.

Correct Answer: B

From the output we notice that the administrator has just shut down Interface Vlan1, which is the default VLAN
so no one can access it remotely (like telnet) -> B is correct.
Answer A is not correct as STP calculation does not depend on which port comes up first or last. STP
recalculates when there is a change in the network.
A normal switch can operate without VLAN -> C is not correct.
This IOS does support VLAN because it has VLAN 1 on it -> D is not correct.

In a switched environment, what does the IEEE 802.1Q standard describe?
A. the operation of VTP
B. a method of VLAN trunking
C. an approach to wireless LAN communication
D. the process for root bridge selection
E. VLAN pruning

Correct Answer: B

As a network technician, do you know which are valid modes for a switch port used as a VLAN trunk? (Choose
A. transparent
B. auto
C. on
D. desirable
E. blocking
F. forwarding

Correct Answer: BCD


Categories: New CCNA 200-120

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