Juniper JN0-649 問題集

質問 1：
BGP multipath or multihop are not configured in your network. In this scenario, what is the correct sequence for BGP active route selection?
A. higher local preference
shortest AS path
lower origin code
lowest router ID
lowest peer address
B. higher local preference
lowest router ID
lowest peer address
lower origin code
shortest AS path
C. higher local preference
shortest AS path
lowest router ID
lowest peer address
lower origin code
D. higher local preference
shortest AS path
lowest peer address
lowest router ID
lower origin code
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 2：
You have PIM SM multicast configure and running in a network environment comprised of EX4300 devices. Your customer report increased delay when switching channels using IPTV. To help decrease the delay, you implement PIM join balancing. You add the set protocol pim join- load-balance command to the configuration. After committing, you notice that the flows are still using one path.
In this scenario, which statement is correct?
A. The clear pim join-distribution command must be issued.
B. IGMP snooping must be configured.
C. PIM join load-balancing also be configured.
D. The interface must be specified to use for load balancing
正解：A

質問 3：
When using wide metrics, which two statements about route advertisement between IS-IS levels are correct? (Choose two.)
A. Level 1 routes advertised as external routes into Level 1 are not advertised to any Level 2 routers by default.
B. Level 1 routes are advertised to Level 2 routers by default.
C. If wide-metrics-only is configured, Level 1 routes are not advertised to Level 2 routers by default.
D. Level 1 and Level 2 routers do not advertise Level 2 routes into the Level 1 area by default.
正解：C,D

質問 4：
You are asked to establish interface level authentication for users connecting to your network.
You must ensure that only corporate devices, identified by MAC addresses, are allowed to connect and authenticate. Authentication must be handled by a centralized server to increase scalability. Which authentication method would satisfy this requirement?
A. captive portal
B. MAC RADIUS
C. 802.1X with single-secure supplicant mode
D. 802.1X with multiple supplicant mode
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 5：
You are implementing the route summarization feature of OSPF. Which two results do you achieve in this scenario? (Choose two.)
A. It helps in migrating to future multi-area OSPF network designs.
B. It reduced the routing table size, enabling devices to store and process less information.
C. It provides optimal routing in the network.
D. It reduces the impact of topology changes on a device.
正解：B,D
解説: (Topexam メンバーにのみ表示されます)

質問 6：
Which statement is true regarding LLDP advertisements?
A. LLDP communicates CoS values to VoIP devices
B. LLDP communicates power requirements from PoE enabled devices
C. LLDP communicates device information to neighbors
D. LLDP communicates VLAN information to VoIP devices
正解：C

質問 7：
There are two BGP routes to 10.200.200.0/24 received from two external peers. Route 1 comes from a neighbor with a router ID of 10.10.100.1 and a peer IP address of 10.10.30.1, and route 2 comes from a neighbor with a router ID of 10.10.200.1 and a peer IP address of 10.10.50.1. Both routes have the same MED value, origin value, AS path length, and local preference number. In this scenario, which statement is correct about the active route?
A. Route 1 will be active because of the peer IP address.
B. Route 2 will be active because of the router ID.
C. Route 2 will be active because of the peer IP address.
D. Route 1 will be active because of the router ID.
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 8：
Which type of BGP is used to peer with a different autonomous system?
A. external
B. dynamic
C. classless
D. static
正解：A