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最新版的JN0-351考古題分享,提前為Enterprise Routing and Switching, Specialist (JNCIS-ENT

最新版的JN0-351考古題分享,提前為Enterprise Routing and Switching, Specialist (JNCIS-ENT
jn0-351考古題分享 最新jn0-351題庫 jn0-351認證考試 jn0-351認證題庫 jn0-351考試資訊
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14/05/24 02:59


JN0-351考古題分享,最新JN0-351題庫,JN0-351認證考試,JN0-351認證題庫,JN0-351考試資訊

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Juniper JN0-351 考試大綱:
主題
簡介
主題 1

* Describe the concepts, operations, or functionalities of BGP
* Identify the concepts, requirements, or functionalities of IP tunneling
主題 2

* Demonstrate knowledge of how to configure, monitor, or troubleshoot IS-IS
* Demonstrate knowledge how to configure, monitor, or troubleshoot OSPF
主題 3

* Demonstrate knowledge of how to configure, monitor, or troubleshoot BGP
* Demonstrate knowledge of how to configure, monitor, or troubleshoot IP tunnels
主題 4

* Identify the concepts, benefits, or operations of Layer 2 firewall filters
* Demonstrate knowledge how to configure, monitor, or troubleshoot Spanning Tree
主題 5

* Describe the concepts, operations, or functionalities of IS-IS
* Describe the concepts, operations, or functionalities of OSPF
主題 6

* Identify the concepts, benefits, applications
* Demonstrate knowledge of how to configure, monitor
主題 7

* Demonstrate knowledge how to configure, monitor
* Port security, including MAC limiting, DHCP snooping

最新的 JNCIS-ENT JN0-351 免費考試真題 (Q28-Q33):

問題 #28
Exhibit.

What is the management IP address of the device shown in the exhibit?

* A. 10.210.20.233
* B. 128.0.0.1
* C. 172.23.11.10
* D. 172.23.12.100
答案:D

解題說明:
Explanation
The management IP address of a device is the IP address that is used to access the device for configuration and monitoring purposes. It is usually assigned to a dedicatedmanagement interface that is separate from the data interfaces. The management interface can be accessed via SSH, Telnet, HTTP, or other protocols.
In the exhibit, the list of interfaces and their statuses shows that the management interface isme0. This interface has an admin status ofup, a protocol status ofinet, a local address of172.23.12.100/24, and a remote address ofunspecified. This means that the me0 interface is active, has an IPv4 address assigned, and is not connected to another device.
Therefore, the management IP address of the device shown in the exhibit is172.23.12.100.
References:
:

問題 #29
What is the default MAC age-out timer on an EX Series switch?

* A. 30 seconds
* B. 300 minutes
* C. 30 minutes
* D. 300 seconds
答案:D

解題說明:
Explanation
The default MAC age-out timer on an EX Series switch is 300 seconds12. The MAC age-out timer is the maximum time that an entry can remain in the MAC table before it "ages out," or is removed31. This configuration can influence efficiency of network resource use by affecting the amount of traffic that is flooded to all interfaces1. When traffic is received for MAC addresses no longer in the Ethernet routing table, the router floods the traffic to all interfaces1.

問題 #30
What are two characteristics of RSTP alternate ports? (Choose two.)

* A. RSTP alternate ports provide an alternate higher cost path to the root bridge.
* B. RSTP alternate ports block traffic while receiving superior BPDUs from a neighboring switch.
* C. RSTP alternate ports provide an alternate lower cost path to the root bridge.
* D. RSTP alternate ports are active ports used to forward frames toward the root bridge.
答案:A,B

解題說明:
A is correct because RSTP alternate ports block traffic while receiving superior BPDUs from a neighboring switch. An alternate port is a backup port for a root port, which means it receives better BPDUs from another bridge than the current root port1. However, an alternate port does not forward any traffic, as it is in a discarding state2. It only listens to BPDUs and waits for the root port to fail. If the root port fails, the alternate port can immediately transition to a forwarding state and become the new root port1.
C is correct because RSTP alternate ports provide an alternate higher cost path to the root bridge. An alternate port is selected based on the same criteria as the root port, which are the lowest bridge ID, the lowest path cost, the lowest sender port ID, and the lowest receiver port ID3. However, an alternate port receives a higher cost BPDU than the root port, otherwise it would be the root port itself1. Therefore, an alternate port provides an alternate higher cost path to the root bridge than the root port.

問題 #31
You are attempting to configure the initial two aggregated Ethernet interfaces on a router but there are no aggregated Ethernet interfaces available.
In this scenario, which configuration will enable these interfaces on this router?

* A.
* B.
* C.
* D.
答案:A

解題說明:
Explanation
The correct answer to your question is
Option C shows the configuration of the statement, which defines the properties of the router chassis, such as the number of aggregated Ethernet interfaces, the number of FPCs, and the number of PICs1.
To enable aggregated Ethernet interfaces on a router, you need to specify the aggregated-devices statement under the chassis parameter to the desired number of interfaces2. For example, to enable two aggregated Ethernet interfaces, you can use the following configuration:
chassis { aggregated-devices { ethernet { device-count 2; } } }
Option C shows this configuration with the device-count set to 2, which will enable two aggregated Ethernet interfaces on the router. The other options do not show this configuration and will not enable any aggregated Ethernet interfaces on the router.
Therefore, option C is the correct answer to your question.

問題 #32
You are receiving multiple BGP routes from an upstream neighbor and only want to advertise a single summarized prefix to your internal OSPF neighbors. This route should only be advertised when you are receiving these BGP routes from this neighbor.
In this scenario, which type of route should you create?

* A. aggregate route
* B. static route using qualified next hops
* C. generate route
* D. static route using the resolve feature
答案:A

解題說明:
Explanation
In this scenario, you should create an 1. Aggregate routes are used for advertising summarized network prefixes1. They help minimize the number of routing tables in an IP network by consolidating selected multiple routes into a single route advertisement1. This approach is in contrast to non-aggregation routing, in which every routing table contains a unique entry for each route1.
Therefore, option A is correct. Options B, C, and D are not correct because:
Static route using the resolve feature: This type of route uses the resolve feature to install a static route in the routing table only if a specific condition is met1. However, it does not provide the capability to summarize multiple routes into a single prefix.
Generate route: This type of route generates a route that is always present in the routing table and can be used to summarize routes. However, it does not have the capability to only advertise the route when specific BGP routes are being received from a neighbor1.
Static route using qualified next hops: This type of route allows for the specification of multiple next-hop addresses for a static route1. However, it does not provide the capability to summarize multiple routes into a single prefix.

問題 #33
......

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