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Understanding functional and technical aspects of CISCO 300-101

The following will be discussed in CISCO 300-101 exam dumps:

IPv4 EIGRP Summarization
Frame Relay Multi-Point
IPv4 EIGRP Distribute-list
Frame Relay Point-to-Point
IPv6 EIGRP and Variance
Sub-optimal Routing
uRPF
DMVPN Lab
Variance
Named EIGRP and VRF Support
BGP
IPv6 OSPFv3 Virtual-link
NTP
Redistribution
IPv6 ACL and VTY
IPv6 in IPv4 Tunneling
EIGRP Stub
Policy-Based Routing (PBR)

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The benefit in Obtaining the CISCO 300-101

There's frequently esteem in a fresher IT proficient airing out an expert level course, yet the CCNP bounces directly into cutting edge steering, exchanging, and investigating points. Systems administration experts progress along the Cisco affirmation program from the section level specialist (CCENT) to Associate level (CCNA) to Professional (CCNP) lastly Expert CCIE.

New organization professionals should begin with CCENT preparing or maybe CCNA level preparing prior to jumping into the high level subjects shrouded in the CCNP Routing and Switching.

CCNP Routing and Switching preparing is intended for experienced organization specialists with at any rate five years of work on overseeing complex Cisco network arrangements. The preparation gets ready understudies to become CCNP R&S affirmed and positions them for their next profession step to the Cisco Certified Internetwork Expert (CCIE) level.

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Who should take the 300-101 Exam

The certification is fashioned for:

Senior network engineer
Network security specialist
Network security engineer

Cisco Implementing Cisco IP Routing Sample Questions (Q28-Q33):

NEW QUESTION # 28

What are the three modes of Unicast Reverse Path Forwarding?

A. broadcast mode, loose mode, and VRF mode
B. strict mode, loose mode, and VRF mode
C. strict mode, broadcast mode, and VRF mode
D. strict mode, loose mode, and broadcast mode

Answer: B

Explanation:

Explanation/Reference:

Explanation:

Network administrators can use Unicast Reverse Path Forwarding (Unicast RPF) to help limit the malicious traffic on an enterprise network. This security feature works by enabling a router to verify the reachability of the source address in packets being forwarded. This capability can limit the appearance of spoofed addresses on a network. If the source IP address is not valid, the packet is discarded. Unicast RPF works in one of three different modes: strict mode, loose mode, or VRF mode. Note that not all network devices support all three modes of operation. Unicast RPF in VRF mode will not be covered in this document.

When administrators use Unicast RPF in strict mode, the packet must be received on the interface that the router would use to forward the return packet. Unicast RPF configured in strict mode may drop legitimate traffic that is received on an interface that was not the router's choice for sending return traffic. Dropping this legitimate traffic could occur when asymmetric routing paths are present in the network.

When administrators use Unicast RPF in loose mode, the source address must appear in the routing table.

Administrators can change this behavior using the allow-default option, which allows the use of the default route in the source verification process. Additionally, a packet that contains a source address for which the return route points to the Null 0 interface will be dropped. An access list may also be specified that permits or denies certain source addresses in Unicast RPF loose mode.

Care must be taken to ensure that the appropriate Unicast RPF mode (loose or strict) is configured during the deployment of this feature because it can drop legitimate traffic. Although asymmetric traffic flows may be of concern when deploying this feature, Unicast RPF loose mode is a scalable option for networks that contain asymmetric routing paths.

Reference: http://www.cisco.com/web/about/security/intelligence/unicast-rpf.html

NEW QUESTION # 29

DRAG DROP

Drag and drop the adverse network conditions from the left onto the correct descriptions on the right.

Select and Place:

Answer:

Explanation:

NEW QUESTION # 30

An organization decides to implement NetFlow on its network to monitor the fluctuation of traffic that is disrupting core services. After reviewing the output of NetFlow, the network engineer is unable to see OUT traffic on the interfaces. What can you determine based on this information?

A. Flow Export version 9 is in use.
B. The command ip flow-capture fragment-offset has been enabled.
C. NetFlow output has been filtered by default.
D. Cisco Express Forwarding has not been configured globally.

Answer: D

Explanation:

Explanation/Reference:

Explanation:

We came across a recent issue where a user setup a router for NetFlow export but was unable to see the OUT traffic for the interfaces in NetFlow Analyzer. Every NetFlow configuration aspect was checked and nothing incorrect was found. That is when we noticed the 'no ip cef' command on the router. CEF was enabled at the global level and within seconds, NetFlow Analyzer started showing OUT traffic for the interfaces. This is why this topic is about Cisco Express Forwarding.

What is switching?

A Router must make decisions about where to forward the packets passing through. This decision-making process is called "switching". Switching is what a router does when it makes the following decisions:

1. Whether to forward or not forward the packets after checking that the destination for the packet is reachable.

2. If the destination is reachable, what is the next hop of the router and which interface will the router use to get to that destination.

What is CEF?

CEF is one of the available switching options for Cisco routers. Based on the routing table, CEF creates its own table, called the Forwarding Information Base (FIB). The FIB is organized differently than the routing table and CEF uses the FIB to decide which interface to send traffic from. CEF offers the following benefits:

1. Better performance than fast-switching (the default) and takes less CPU to perform the same task.

2. When enabled, allows for advanced features like NBAR

3. Overall, CEF can switch traffic faster than route-caching using fast-switching How to enable CEF?

CEF is disabled by default on all routers except the 7xxx series routers. Enabling and Disabling CEF is easy. To enable CEF, go into global configuration mode and enter the CEF command.

Router# config t

Router(config)# ip cef

Router(config)#

To disable CEF, simply use the 'no' form of the command, ie. 'no ip cef'.

Why CEF Needed when enabling NetFlow ?

CEF is a prerequisite to enable NetFlow on the router interfaces. CEF decides through which interface traffic is exiting the router. Any NetFlow analyzer product will calculate the OUT traffic for an interface based on the Destination Interface value present in the NetFlow packets exported from the router. If the CEF is disabled on the router, the NetFlow packets exported from the router will have "Destination interface" as "null" and this leads NetFlow Analyzer to show no OUT traffic for the interfaces. Without enabling the CEF on the router, the NetFlow packets did not mark the destination interfaces and so NetFlow Analyzer was not able to show the OUT traffic for the interfaces.

Reference: https://blogs.manageengine.com/network-2/netflowanalyzer/2010/05/19/need-for-cef-in- netflow-data-export.html

NEW QUESTION # 31

Which two statements about the OSPF down bit are true? (Choose two)

A. It is set when MP-BGP routers are redistributed into OSPF
B. It set when an OSPF virtual link in created
C. It is set only for LSA types 1,2 and 4.
D. It is set only for LSA types 3, 5, and 7
E. It is set when OSPF routers are redistributed into BGP

Answer: B,D

NEW QUESTION # 32

Refer to the exhibit.

A network engineer is troubleshooting a DMVPN setup between the hub and the spoke. The engineer executes the command show crypto isakmp sa and observes the output that is displayed. What is the problem?