JN0-650 試験問題と解答 - 模擬練習 - 練習問題・模擬試験

Question No : 1
Your organization uses 802.1X with a RADIUS server. If the RADIUS server stops responding, you want the fallback action to continue to permit access for devices that currently have authorization but deny any new access attempts.
Which fallback action provides this capability?

A.use-cache
B.deny
C.permit
D.vlan-name

正解:

Question No : 2
Which two statements correctly describe how EX Series switches use captive portal for Layer 2 authentication? (Choose two.)

A.The captive portal is used as a fallback mechanism for clients that fail 802.1X or MAC RADIUS authentication.
B.The captive portal authentication allowlist works for devices that do not have HTTP capabilities.
C.The captive portal is configured on Layer 3 interfaces and does not participate in Layer 2 authentication on EX Series switches.
D.The captive portal is the default Layer 2 authentication method that is applied before other methods such as 802.1X or MAC RADIU

正解:

Question No : 3
You are configuring CoS throughout your enterprise network using DSCP. You have configured MF classification on your edge devices and are using BA classifiers throughout the core. You are using the EZQoS template provided on your Ex Series switches that are acting as your edge devices.
You have loaded the configuration group and applied it to the appropriate interfaces. Classification and scheduling are working properly on your edge devices; however, traffic is not being classified correctly when it reaches your core devices.
In this scenario, which statement is correct about solving this problem?

A.You should configure and apply rewrite rules on the edge devices' egress interfaces toward the core.
B.You must configure the edge devices to use BA classifiers instead of MF classifiers.
C.You must configure the core devices using the EZQoS template as well.
D.You should configure and apply a policer to the edge devices' egress interfaces toward the core.

正解:

Question No : 4
When configuring OSPF, what is the purpose of adding the secondary command to an OSPF interface?

A.The secondary command sets a backup path for virtual links.
B.The secondary command allows an interface to be in multiple areas.
C.The secondary command is used in conjunction with VRRP for failover.
D.The secondary command creates an intra-area backup path.

正解:

Question No : 5
Click the Exhibit button.

You want to provide better performance for the video traffic that traverses your network. The video traffic enters your network without any class-of-service markings.
According to Juniper Networks, which two classification methods are performed by the routers shown in the exhibit? (Choose two.)

A.R2 and R3 perform multifield classification.
B.R2 and R3 perform behavior aggregate classification.
C.R1 performs multifield classification.
D.R1 performs behavior aggregate classification.

正解:

Question No : 6
Which three statements about VSTP are correct? (Choose three.)

A.VSTP supports up to 253 unique spanning tree topologies
B.VSTP is enabled by default on EX Series switches.
C.A separate spanning tree instance is generated for each VLA
D.VSTP is incompatible with RSTP
E.Separate BPDUs are flooded for each VSTP enabled VLAN

正解:

Question No : 7
Click the Exhibit button.

Referring to the exhibit, what is required for the BGP peering to establish?

A.Configure neighbor 172.16.1.1 multihop under the ext-peers hierarchy.
B.Configure neighbor 10.10.20.1 multihop under the ext-peers hierarchy.
C.Configure neighbor 10.10.10.1 multihop under the ext-peers hierarchy.
D.Configure neighbor 172.16.1.1 multipath under the ext-peers hierarchy.

正解:

Question No : 8
Click the Exhibit button.

What is the OSPF router type shown in the exhibit for router 192.168.2.1?

A.both an ABR and an ASBR
B.neither an ABR nor an ASBR
C.an ABR
D.an ASBR

正解:

Question No : 9
You have created a private community VLAN called RND. The private community VLAN works fine within switch S1, but traffic in the private RND community VLAN does not reach VLAN members connected to switch S2.
Which statement is correct in this scenario?

A.The RND community VLAN needs to be defined as an isolated VLA
B.The RND Community VLAN needs to be stripped of all 802.1Q tags.
C.The RND community VLAN needs to have an associated 802.1Q tag associated with it.
D.The RND Community VLAN needs to have the same 802.1Q tag as its parent VLA

正解:

Question No : 10
Click the Exhibit button.

Referring to the exhibit, R2 receives a packet from the multicast source on its ge-0/0/4.0 interface.
Which two statements are correct in this scenario? (Choose two.)

A.All interfaces other than ge-0/0/4.0 will be on the outgoing interface list.
B.R2 determines that the packet is coming in on an interface that is on the reverse path back to the source.
C.The packet is discarded.
D.R2 verifies the existing unicast routing table and determines that this interface is not on the reverse path back to the source.

正解:

Question No : 11
You have several switches in your network that use Cisco's PVST+ protocol. You want your Juniper switches to interoperate with those devices.
In this scenario, which protocol would you use?

A.VSTP
B.MSTP
C.RSTP
D.RPVST+

正解:

Question No : 12
You are deploying a three-stage EVPN environment with VXLAN using EX and QFX Series switches. The leaf devices will perform the gateway services.
Which two statements are correct in this scenario? (Choose two.)

A.Both the leaf and spine devices must support VXLAN capabilities.
B.The leaf devices will function as VTEPs.
C.The spine devices will function as VTEPs.
D.Only the leaf devices must support VXLAN capabilities.

正解:

Question No : 13
Which statement accurately describes the operation of OSPF within the Junos OS?

A.OSPF is used for routing information and neighbor discovery within a single autonomous system (AS).
B.OSPF does not automatically advertise directly connected routes.
C.OSPF is used for routing information and neighbor discovery between multiple autonomous systems.
D.OSPF calculates routes using a distance vector algorithm

正解:

Question No : 14
You are troubleshooting a multicast deployment in a network. Some multicast groups operate in PIM-ASM mode and others operate in PIM-SSM mode.
While troubleshooting, you note the following:
- The network uses IGMPv2 for some segments and IGMPv3 for others.
- For group 232.1.1.1, receivers know the exact source IP of the multicast sender.
- For group 239.10.10.10, receivers do not know the source address in advance.
Which two statements correctly describe the operational differences between these two modes in Junos OS? (Choose two.)

A.PIM-SSM requires an RP for initial joins, whereas PIM-ASM can operate without one.
B.PIM-SSM relies on IGMPv3 to signal both the source and the group in the join message, bypassing the RP entirely.
C.PIM-ASM supports multiple active sources for a group without requiring receivers to know them in advance, whereas PIM-SSM requires explicit source knowledge.
D.In PIM-ASM, the DR first sends a PIM register message to the RP before switching to the shortest-path tree.

正解:

Question No : 15
Click the Exhibit button.

Your network receives the full Internet BGP routing table from two different ISPs. You want your local routers to use Provider A to forward all Internet traffic as long as Provider A is available.
Referring to the exhibit, which two actions would satisfy this requirement? (Choose two.)

A.Use a routing policy to set the local preference attribute value lower for the routes that are learned by R1.
B.Use a routing policy to set the local preference attribute value higher for the routes that are learned by R2.
C.Use a routing policy to set the local preference attribute value lower for the routes that are learned by R2.
D.Use a routing policy to set the local preference attribute value higher for the routes that are learned by R1.

正解:

Juniper JN0-650 問題練習