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- CCNP Routing 300-101
1.
Cisco EVN uses what type of trunk to carry traffic for all virtual networks between two physical routers?
- A.VNET
- B.ISL
- C.dot1Q
- D.802.10
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
|
Cisco Easy Virtual Network (EVN) uses a Virtual Network Trunk (VNET Trunk)
to carry traffic for each virtual network, and eliminates the need to manually configure
a subinterface for each virtual network on all routers. Inter-Switch Link (ISL) is a Cisco-proprietary trunking technology for Ethernet networks. IEEE 802.1Q is an industry-standard trunking technology for Ethernet networks. IEEE 802.10 is an industry-standard trunking technology for FDDI networks. |
2.
When migrating from a PVST+ to Rapid-PVST+, which PVST+ features can be disabled,
because similar features are built into Rapid-PVST+? (Choose the two best
answers.)
- A.UplinkFast
- B.Loop Guard
- C.BackboneFast
- D.PortFast
- Answer & Explanation
- Report
Answer : [A],[C]
Explanation :
Explanation :
| When converting a Cisco Catalyst switch to Rapid-PVST+, you can remove the UplinkFast and BackboneFast features, because similar features are built into Rapid-PVST+. However, the following features can still be used with Rapid-PVST+: PortFast, BPDU Guard, BPDU Filter, Root Guard, and Loop Guard. |
3.
A network segment has a bandwidth of 10 Mbps, and packets experience an endto-
end latency of 100 ms. What is the bandwidth-delay product of the network
segment?
- A.100,000,000 bits
- B.10,000,000 bits
- C.1,000,000 bits
- D.100,000 bits
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
|
The bandwidth-delay product of a segment is the measure of the maximum number
of bits that can be on the segment at any one time. The bandwidth-delay product
is calculated by multiplying the segment’s bandwidth (in bits/sec) by the latency
that packets experience as they cross the segment (in sec). In this question, the bandwidth-delay product can be calculated as follows: bandwidth-delay product = 10,000,000 bits/sec * 0.1 sec = 1,000,000 bits. |
4.
What command can be used to globally enable CEF on a router?
- A.ip flow egress
- B.ip route-cache cef
- C.no ip route-cache
- D.ip cef
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| To globally enable CEF on a router, use the ip cef command in global configuration mode. The ip flow egress interface configuration mode command is used to enable outbound NetFlow. The ip route-cache cef interface configuration mode command is used to enable CEF on an individual interface, if CEF has already been globally enabled on the router. The no ip route-cache interface configuration mode command is used to enable process switching on an interface. |
5.
Policy-Based Routing (PBR) has been enabled on Router R1’s Fa 0/0 interface. Which
of the following are true regarding how PBR works? (Choose two.)
- A.Packets entering Fa 0/0 will be compared based on the PBR route map.
- B.Packets exiting Fa 0/0 will be compared based on the PBR route map.
- C.Cisco IOS ignores the PBR forwarding directions when a packet matches a route map deny clause.
- D.Cisco IOS ignores the PBR forwarding directions when a packet matches a route map permit clause.
- Answer & Explanation
- Report
Answer : [A],[C]
Explanation :
Explanation :
| PBR supports processing packets on an interface, for the inbound direction only. The referenced route map causes PBR to attempt policy routing of packets that match a permit clause in the route map. |
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