Juniper JN0-364\u00a0 Exam Dumps<\/b><\/a> and Practice Test Dumps<\/b><\/p>\nQuestion: 181. Which Junos command displays detailed information about an interface, including statistics and operational details?<\/b><\/p>\n\n- <\/b> show interfaces<\/span>
\n<\/span>2.<\/b> show route<\/span>
\n<\/span>3.<\/b> show bgp summary<\/span>
\n<\/span>4.<\/b> show system uptime<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. <\/span>show interfaces<\/span><\/p>\nExplanation:<\/b><\/p>\n
The <\/span>show interfaces<\/span> command provides detailed information about Junos interfaces, including administrative and operational status, traffic statistics, errors, physical characteristics, and protocol information. It is commonly used when troubleshooting interface connectivity or performance problems. The terse version provides a compact summary, while the standard command provides substantially more operational detail. The other commands focus on routing, BGP sessions, or system uptime rather than interface-level diagnostics.<\/span><\/p>\nQuestion: 182. Which BGP attribute is used to indicate how a route entered the BGP routing domain?<\/b><\/p>\n\n- <\/b> NEXT_HOP<\/span>
\n<\/span>2.<\/b> MED<\/span>
\n<\/span>3.<\/b> Origin<\/span>
\n<\/span>4.<\/b> Local Preference<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3. Origin<\/span><\/p>\nExplanation:<\/b><\/p>\n
The BGP Origin attribute identifies the origin type of a route and is considered during BGP path selection. Common origin values include IGP, EGP, and Incomplete. When this attribute is reached in the path-selection process, IGP origin is generally preferred over EGP, while EGP is preferred over Incomplete. Origin is separate from AS_PATH, which records autonomous systems traversed, and Local Preference, which is used to influence outbound routing decisions within an autonomous system.<\/span><\/p>\nQuestion: 183. Which OSPF mechanism allows routers to discover neighbors and verify that they remain reachable?<\/b><\/p>\n\n- <\/b> Hello protocol<\/span>
\n<\/span>2.<\/b> Route reflector<\/span>
\n<\/span>3.<\/b> LACP<\/span>
\n<\/span>4.<\/b> AS_PATH<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. Hello protocol<\/span><\/p>\nExplanation:<\/b><\/p>\n
OSPF Hello packets are exchanged between neighboring routers to discover and maintain OSPF neighbor relationships. They carry parameters such as the router ID, area information, Hello interval, and dead interval. Compatible settings are required for an adjacency to form correctly. Regular Hello exchanges also allow routers to detect when a neighbor stops responding. The other choices belong to different technologies: route reflectors are associated with BGP, LACP manages link aggregation, and AS_PATH is a BGP attribute.<\/span><\/p>\nQuestion: 184. Which IPv4 address is used as the limited broadcast address?<\/b><\/p>\n\n- <\/b> 0.0.0.0<\/span>
\n<\/span>2.<\/b> 127.0.0.1<\/span>
\n<\/span>3.<\/b> 255.255.255.255<\/span>
\n<\/span>4.<\/b> 224.0.0.1<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3. <\/span>255.255.255.255<\/span><\/p>\nExplanation:<\/b><\/p>\n
The IPv4 address <\/span>255.255.255.255<\/span> is the limited broadcast address. A packet sent to this address is intended for all IPv4 hosts on the local broadcast domain and is not routed by IPv4 routers. <\/span>0.0.0.0<\/span> has several special uses, including representing an unspecified address and the destination of the default route when combined with a \/0 prefix. <\/span>127.0.0.1<\/span> is the IPv4 loopback address, while <\/span>224.0.0.1<\/span> is an IPv4 multicast address.<\/span><\/p>\nQuestion: 185. Which Junos feature can preserve routing protocol state across a Routing Engine switchover?<\/b><\/p>\n\n- <\/b> LACP<\/span>
\n<\/span>2.<\/b> NSR<\/span>
\n<\/span>3.<\/b> VRRP<\/span>
\n<\/span>4.<\/b> GRE<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2. NSR<\/span><\/p>\nExplanation:<\/b><\/p>\n
Nonstop Active Routing, or NSR, is designed to maintain routing protocol state across a Routing Engine switchover. By preserving relevant control-plane protocol state, NSR can reduce the disruption that would otherwise occur when control shifts between redundant Routing Engines. NSR is different from GRES, which focuses primarily on maintaining forwarding continuity during the switchover. LACP, VRRP, and GRE provide link aggregation, gateway redundancy, and tunneling functions respectively.<\/span><\/p>\nQuestion: 186. Which OSPF LSA type is originated by each OSPF router to describe its own links within an area?<\/b><\/p>\n\n- <\/b> Type 1<\/span>
\n<\/span>2.<\/b> Type 3<\/span>
\n<\/span>3.<\/b> Type 5<\/span>
\n<\/span>4.<\/b> Type 2<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. Type 1<\/span><\/p>\nExplanation:<\/b><\/p>\n
OSPF Type 1 Router LSAs are originated by individual OSPF routers and describe their links, interfaces, and associated OSPF information within an area. These LSAs form a fundamental part of the link-state database and allow routers to construct a topology view for SPF calculations. Type 2 Network LSAs are originated by the DR on multi-access networks, Type 3 Summary LSAs are generated by ABRs for inter-area routing, and Type 5 LSAs advertise external routes.<\/span><\/p>\nQuestion: 187. Which BGP attribute can be used to communicate a preference for one external entry point over another?<\/b><\/p>\n\n- <\/b> MED<\/span>
\n<\/span>2.<\/b> Origin<\/span>
\n<\/span>3.<\/b> Local Preference<\/span>
\n<\/span>4.<\/b> Community<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. MED<\/span><\/p>\nExplanation:<\/b><\/p>\n
The Multi-Exit Discriminator, or MED, can be used to communicate a preference for how traffic should enter an autonomous system when multiple connections exist between the same neighboring autonomous systems. A lower MED is generally preferred when the relevant comparison is made. MED is therefore commonly associated with influencing inbound traffic. Local Preference has a different role and is primarily used within an autonomous system to influence outbound exit selection.<\/span><\/p>\nQuestion: 188. Which Junos command displays the active route for a specific destination prefix?<\/b><\/p>\n\n- <\/b> show route <prefix><\/span>
\n<\/span>2.<\/b> show interfaces terse<\/span>
\n<\/span>3.<\/b> show chassis hardware<\/span>
\n<\/span>4.<\/b> show system alarms<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. <\/span>show route <prefix><\/span><\/p>\nExplanation:<\/b><\/p>\n
The <\/span>show route <prefix><\/span> command can be used to examine routing information for a specific destination prefix. It helps administrators determine whether a route exists, which protocol supplied it, whether it is active, and what next-hop information is associated with it. The command can be extended with options such as <\/span>detail<\/span> for more comprehensive information. Interface, chassis, and system-alarm commands provide information about different areas of the Junos device.<\/span><\/p>\nQuestion: 189. Which protocol is used by IS-IS to exchange link-state information?<\/b><\/p>\n\n- <\/b> BGP<\/span>
\n<\/span>2.<\/b> IS-IS itself using link-state PDUs<\/span>
\n<\/span>3.<\/b> DHCP<\/span>
\n<\/span>4.<\/b> VRRP<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2. IS-IS itself using link-state PDUs<\/span><\/p>\nExplanation:<\/b><\/p>\n
IS-IS exchanges routing information using Link State PDUs, commonly called LSPs. Routers use these protocol data units to build a link-state database and calculate paths through the topology. IS-IS does not depend on TCP or UDP for its routing-protocol exchanges. It is an interior gateway protocol with Level 1 and Level 2 hierarchy, allowing networks to be organized into areas while maintaining scalable routing information.<\/span><\/p>\nQuestion: 190. What does a BGP route reflector primarily reduce in a large iBGP network?<\/b><\/p>\n\n- <\/b> The need for a full mesh of iBGP sessions<\/span>
\n<\/span>2.<\/b> The number of Ethernet VLANs<\/span>
\n<\/span>3.<\/b> The IPv6 address size<\/span>
\n<\/span>4.<\/b> The OSPF SPF calculation time<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. The need for a full mesh of iBGP sessions<\/span><\/p>\nExplanation:<\/b><\/p>\n
A route reflector reduces the requirement for every iBGP router to establish a direct session with every other iBGP router. Instead, route-reflector clients exchange routes through designated route reflectors. This makes iBGP deployments more scalable because the number of required sessions can be significantly reduced. Route reflection is a BGP control-plane feature and does not change IPv6 address size, reduce VLAN counts, or directly optimize OSPF SPF calculations.<\/span><\/p>\nQuestion: 191. Which IPv6 prefix is used for multicast addresses?<\/b><\/p>\n\n- <\/b> 2000::\/3<\/span>
\n<\/span>2.<\/b> FE80::\/10<\/span>
\n<\/span>3.<\/b> FF00::\/8<\/span>
\n<\/span>4.<\/b> FC00::\/7<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3. <\/span>FF00::\/8<\/span><\/p>\nExplanation:<\/b><\/p>\n
IPv6 multicast addresses use the <\/span>FF00::\/8<\/span> prefix. Multicast allows traffic to be delivered to a group of interested interfaces rather than to one specific destination. IPv6 relies extensively on multicast for functions such as Neighbor Discovery because IPv6 does not use traditional broadcast addressing. <\/span>FE80::\/10<\/span> is reserved for link-local addresses, <\/span>FC00::\/7<\/span> is used for unique local addresses, and <\/span>2000::\/3<\/span> covers a major portion of global unicast addressing.<\/span><\/p>\nQuestion: 192. Which Junos command is commonly used to inspect the current candidate configuration changes before committing?<\/b><\/p>\n\n- <\/b>