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- CCNP Switching 642-813
36.
Which MST configuration statement is correct?
- A.MST configurations can be propagated to other switches using VTP.
- B.After MST is configured on a Switch, PVST+ operations will also be enabled by default.
- C.MST configurations must be manually configured on each switch within the MST region.
- D.MST configurations only need to be manually configured on the Root Bridge.
- E.MST configurations are entered using the VLAN Database mode on Cisco Catalyst switches.
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| MST configuration must be manually be configured on each switch within the MST region. |
37.
The network administrator maps VLAN 10 through 20 to MST instance 2. How will this information
be propagated to all appropriate switches?
- A.Information will be carried in the RSTP BPDUs.
- B.It will be propagated in VTP updates.
- C.Information stored in the Forwarding Information Base and the switch will reply on query.
- D.Multiple Spanning Tree must be manually configured on the appropriate switches.
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Recall that the whole idea behind MST is the capability to map multiple VLANs to a smaller number of STP instances. Inside a region, the actual MST instances (MSTIs) exist alongside the IST. Cisco supports a maximum of 16 MSTIs in each region. IST always exists as MSTI number 0, leaving MSTI 1 through 15 available for use. MST must be manually configured on the all switch belongs to same MST region. |
38.
TYou need make configuration changes to an existing layer 3 switch in the Company network. On a
multilayer Catalyst switch, which interface command is used to convert a Layer 3 interface to a
Layer 2 interface?
- A.switchport access vlan vlan-id
- B.switchport
- C.switchport mode access
- D.no switchport
- E.None of the other alternatives apply
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The switchport command puts the port in Layer 2 mode. Then, you can use other switchport command keywords to configure trunking, access VLANs, and so on. |
39.
The Company administrator has issue the "show vlan id 5" command. What will this command
display? (Select two)
- A.Ports in VLAN 5
- B.Utilization
- C.VLAN information on port 0/5
- D.Filters
- E.MTU and type
- Answer & Explanation
- Report
Answer : [A, E]
Explanation :
Explanation :
| #show vlan id 5 : Shows all ports belonging to VLAN 5 and MTU of ports and type. |
40.
You're a network administer and you issue the command (show port 3/1) on an Ethernet port. To
your surprise you notice a non-zero entry in the 'Giants' column. What could be the cause of this?
- A.IEEE 802.1Q
- B.IEEE 802.10
- C.Misconfigured NIC
- D.User configuration
- E.All of the above.
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
|
The 802.1Q standard can create an interesting scenario on the network. Recalling that the
maximum size for an Ethernet frame as specified by IEEE 802.3 is 1518 bytes, this means that if a
maximum-sized Ethernet frame gets tagged, the frame size will be 1522 bytes, a number that
violates the IEEE 802.3 standard. To resolve this issue, the 802.3 committee created a subgroup
called 802.3ac to extend the maximum Ethernet size to 1522 bytes. Note: The show port command is used to display port status and counters. Giants denote the number of received giant frames (frames that exceed the maximum IEEE 802.3 frame size) on the port. |
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