Juniper JN0-364\u00a0 Exam Dumps<\/b><\/a> and Practice Test Dumps<\/b><\/p>\n <\/p>\n
Question: 281. Which Junos command displays detailed information about all interfaces, including statistics and operational details?<\/b><\/p>\n\n- <\/b> show interfaces<\/span>
\n<\/span>2.<\/b> show interfaces terse<\/span>
\n<\/span>3.<\/b> show route<\/span>
\n<\/span>4.<\/b> show system alarms<\/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 operational information about interfaces, including their administrative and operational status, physical properties, traffic statistics, errors, and other interface-specific information. The <\/span>show interfaces terse<\/span> command provides a much more compact summary and is useful for quickly checking interface status. <\/span>show route<\/span> displays routing information, while <\/span>show system alarms<\/span> displays active system alarms. When investigating interface errors, packet counters, physical problems, or detailed operational behavior, the full <\/span>show interfaces<\/span> command is generally more appropriate.<\/span><\/p>\nQuestion: 282. Which BGP attribute is used to influence outbound traffic selection within an autonomous system?<\/b><\/p>\n\n- <\/b> MED<\/span>
\n<\/span>2.<\/b> Local Preference<\/span>
\n<\/span>3.<\/b> AS_PATH<\/span>
\n<\/span>4.<\/b> NEXT_HOP<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2. Local Preference<\/span><\/p>\nExplanation:<\/b><\/p>\n
BGP Local Preference is commonly used within an autonomous system to influence which exit point should be preferred for outbound traffic. A higher Local Preference is generally preferred. Because Local Preference is propagated through iBGP, administrators can use it to influence route selection across multiple routers in the same AS. MED is commonly used to influence how a neighboring AS selects an entry point, while AS_PATH records autonomous systems traversed and NEXT_HOP identifies the next-hop address. Local Preference is therefore a major tool for controlling outbound traffic paths.<\/span><\/p>\nQuestion: 283. Which OSPF packet is used to discover and maintain neighboring routers?<\/b><\/p>\n\n- <\/b> Link-State Update<\/span>
\n<\/span>2.<\/b> Database Description<\/span>
\n<\/span>3.<\/b> Hello<\/span>
\n<\/span>4.<\/b> Link-State Acknowledgment<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3. Hello<\/span><\/p>\nExplanation:<\/b><\/p>\n
OSPF Hello packets are used to discover neighboring routers and maintain existing neighbor relationships. They carry information such as router identity, area information, timers, and other parameters needed to determine whether neighboring routers are compatible. Once neighbors establish communication, additional OSPF packet types are used for database synchronization and LSA exchange. Database Description packets summarize link-state information, Link-State Requests ask for specific LSAs, and Link-State Acknowledgments confirm receipt of LSAs. Hello packets therefore form the foundation of OSPF neighbor discovery and maintenance.<\/span><\/p>\nQuestion: 284. Which address represents the IPv4 default route?<\/b><\/p>\n\n- <\/b> 127.0.0.0\/8<\/span>
\n<\/span>2.<\/b> 255.255.255.255\/32<\/span>
\n<\/span>3.<\/b> 0.0.0.0\/0<\/span>
\n<\/span>4.<\/b> 224.0.0.0\/4<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3. 0.0.0.0\/0<\/span><\/p>\nExplanation:<\/b><\/p>\n
The IPv4 default route is represented by 0.0.0.0\/0. Because the prefix contains zero network-specific bits, it can match any IPv4 destination for which a more specific route is not available. Routers commonly use a default route to forward traffic toward an upstream router or Internet gateway when no specific destination route exists. The 127.0.0.0\/8 range is reserved for loopback addresses, 224.0.0.0\/4 is used for multicast, and 255.255.255.255\/32 is the limited broadcast address.<\/span><\/p>\nQuestion: 285. Which Junos feature allows a backup Routing Engine to take over control-plane responsibilities during a failure?<\/b><\/p>\n\n- <\/b> GRES<\/span>
\n<\/span>2.<\/b> LACP<\/span>
\n<\/span>3.<\/b> VRRP<\/span>
\n<\/span>4.<\/b> BFD<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. GRES<\/span><\/p>\nExplanation:<\/b><\/p>\n
Graceful Routing Engine Switchover (GRES) supports high availability by allowing a backup Routing Engine to assume control-plane responsibilities when the primary Routing Engine becomes unavailable. The forwarding plane can continue forwarding traffic during the switchover, helping reduce service disruption. LACP provides link aggregation, VRRP provides first-hop gateway redundancy, and BFD provides rapid failure detection. GRES is therefore specifically associated with redundancy between Routing Engines on supported Junos platforms.<\/span><\/p>\nQuestion: 286. Which OSPF LSA describes the links and state information of an individual router within an area?<\/b><\/p>\n\n- <\/b> Type 1 Router LSA<\/span>
\n<\/span>2.<\/b> Type 3 Summary LSA<\/span>
\n<\/span>3.<\/b> Type 5 AS External LSA<\/span>
\n<\/span>4.<\/b> Type 2 Network LSA<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. Type 1 Router LSA<\/span><\/p>\nExplanation:<\/b><\/p>\n
A Type 1 Router LSA is originated by an OSPF router to describe its links, interfaces, and associated link states within an area. OSPF routers use this information to build the link-state database and calculate shortest paths. Type 2 Network LSAs describe multiaccess networks represented by a DR, Type 3 Summary LSAs are generated by ABRs to advertise inter-area networks, and Type 5 AS External LSAs describe external routes. Router LSAs are therefore fundamental to the topology information used by OSPF’s SPF calculation.<\/span><\/p>\nQuestion: 287. Which BGP attribute can be used to influence the preferred entry point into an autonomous system?<\/b><\/p>\n\n- <\/b> NEXT_HOP<\/span>
\n<\/span>2.<\/b> Local Preference<\/span>
\n<\/span>3.<\/b> MED<\/span>
\n<\/span>4.<\/b> Origin<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3. MED<\/span><\/p>\nExplanation:<\/b><\/p>\n
The Multi-Exit Discriminator (MED) can provide a neighboring autonomous system with information about which entry point should be preferred when multiple connections exist between autonomous systems. Lower MED values are generally preferred when the attribute is compared. Local Preference is normally used internally to influence outbound traffic, while NEXT_HOP identifies the next-hop address and Origin describes how the route entered BGP. MED therefore provides a mechanism for influencing the neighboring AS’s selection of an inbound path.<\/span><\/p>\nQuestion: 288. Which Junos command can display a specific route and its detailed next-hop information?<\/b><\/p>\n\n- <\/b> show route <prefix> detail<\/span>
\n<\/span>2.<\/b> show interfaces terse<\/span>
\n<\/span>3.<\/b> show chassis hardware<\/span>
\n<\/span>4.<\/b> show system uptime<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. <\/span>show route <prefix> detail<\/span><\/p>\nExplanation:<\/b><\/p>\n
The <\/span>show route <prefix> detail<\/span> command provides detailed information about a selected route in the Junos routing table. The output can include the route’s protocol source, preference, next hop, interface, and other attributes depending on the route type. This makes the command useful when investigating why a particular path was selected or determining how traffic toward a specific destination will be forwarded. The other commands provide interface summaries, hardware inventory, or system uptime rather than detailed information about an individual route.<\/span><\/p>\nQuestion: 289. Which protocol is a link-state interior gateway protocol that uses a shortest-path calculation?<\/b><\/p>\n\n- <\/b> RIP<\/span>
\n<\/span>2.<\/b> BGP<\/span>
\n<\/span>3.<\/b> OSPF<\/span>
\n<\/span>4.<\/b> VRRP<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3. OSPF<\/span><\/p>\nExplanation:<\/b><\/p>\n
OSPF is a link-state interior gateway protocol that builds a link-state database representing the network topology and uses the Shortest Path First algorithm to calculate routes. Routers exchange LSAs so that each router can maintain an appropriate view of the topology within its area. RIP is a distance-vector protocol, BGP is primarily an exterior gateway protocol, and VRRP provides gateway redundancy rather than dynamic route calculation. OSPF’s link-state design allows it to converge efficiently and support hierarchical network structures through its area architecture.<\/span><\/p>\nQuestion: 290. Which Junos command displays the system’s current active configuration?<\/b><\/p>\n\n- <\/b> show route<\/span>
\n<\/span>2.<\/b> show configuration<\/span>
\n<\/span>3.<\/b> show bgp summary<\/span>
\n<\/span>4.<\/b> show interfaces terse<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2. <\/span>show configuration<\/span><\/p>\nExplanation:<\/b><\/p>\n
The <\/span>show configuration<\/span> command displays the Junos configuration hierarchy, allowing administrators to review configured interfaces, routing protocols, policies, system services, and other settings. It is an operational-mode command commonly used to inspect the active configuration. <\/span>show route<\/span> displays routing information, <\/span>show bgp summary<\/span> provides BGP session information, and <\/span>show interfaces terse<\/span> summarizes interface status. Reviewing the configuration is an important step when verifying whether a routing or interface behavior is supported by the device’s configured settings.<\/span><\/p>\nQuestion: 291. Which BGP community prevents a route from being advertised to any BGP peer?<\/b><\/p>\n\n- <\/b> internet<\/span>
\n<\/span>2.<\/b> no-export<\/span>
\n<\/span>3.<\/b> no-advertise<\/span>
\n<\/span>4.<\/b> local-AS<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3. no-advertise<\/span><\/p>\nExplanation:<\/b><\/p>\n
The BGP <\/span>no-advertise<\/span> community prevents a route from being advertised to any BGP peer. It is therefore more restrictive than the <\/span>no-export<\/span> community, which generally prevents advertisement outside the local autonomous system but allows appropriate internal propagation. The <\/span>internet<\/span> community permits normal advertisement behavior, subject to configured routing policies. Communities such as these allow network administrators to control route propagation without having to manipulate every individual route independently.<\/span><\/p>\nQuestion: 292. Which IPv6 prefix is reserved for link-local addresses?<\/b><\/p>\n