Juniper JN0-364\u00a0 Exam Dumps<\/b><\/a> and Practice Test Dumps<\/b><\/p>\n <\/p>\n
Question: 61. Which Junos command is commonly used to display detailed information about a specific interface?<\/b><\/p>\n\n- <\/b> show route<\/span>
\n<\/span>2.<\/b> show interfaces<\/span>
\n<\/span>3.<\/b> show bgp summary<\/span>
\n<\/span>4.<\/b> show chassis alarms<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2. show interfaces<\/span><\/p>\nExplanation:<\/b><\/p>\n
The <\/span>show interfaces<\/span> command provides detailed operational information about interfaces on a Junos device. Depending on the interface and options used, the output can include administrative and operational status, traffic statistics, errors, encapsulation, addressing, MTU, and other interface-specific information. This makes the command valuable when troubleshooting connectivity or physical and logical interface problems. <\/span>show interfaces terse<\/span> provides a more compact overview, while <\/span>show route<\/span> focuses on routing information and <\/span>show bgp summary<\/span> focuses on BGP sessions. Interface details should often be checked early when investigating a connectivity problem.<\/span><\/p>\nQuestion: 62. Which OSPF LSA type is generated by an ABR to advertise networks from one OSPF area into another?<\/b><\/p>\n\n- <\/b> Type 2<\/span>
\n<\/span>2.<\/b> Type 5<\/span>
\n<\/span>3.<\/b> Type 1<\/span>
\n<\/span>4.<\/b> Type 3<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 4. Type 3<\/span><\/p>\nExplanation:<\/b><\/p>\n
Type 3 LSAs, known as Summary LSAs, are generated by OSPF Area Border Routers to advertise network reachability between OSPF areas. They allow routers in one area to learn about destinations located in another area without requiring the complete link-state database of that remote area. Type 1 LSAs describe individual routers within an area, while Type 2 LSAs describe broadcast or NBMA network segments. Type 5 LSAs represent external routes redistributed into OSPF. Understanding the different LSA types helps administrators determine how routes are being learned and propagated through an OSPF hierarchy.<\/span><\/p>\nQuestion: 63. Which Junos command can be used to verify the committed configuration and compare it with the candidate configuration before committing?<\/b><\/p>\n\n- <\/b> show | compare<\/span>
\n<\/span>2.<\/b> show route terse<\/span>
\n<\/span>3.<\/b> show arp no-resolve<\/span>
\n<\/span>4.<\/b> show system uptime<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. show | compare<\/span><\/p>\nExplanation:<\/b><\/p>\n
The <\/span>show | compare<\/span> command is useful in Junos configuration mode for displaying differences between the candidate configuration and the currently committed configuration. It allows an administrator to review pending additions, modifications, and deletions before activating them. This is an important part of controlled configuration management because it provides an opportunity to identify unintended changes. Commands such as <\/span>show route<\/span> and <\/span>show arp<\/span> display operational information rather than configuration differences. Reviewing the candidate configuration before a commit can reduce the risk of accidentally changing unrelated interfaces, routing policies, or services.<\/span><\/p>\nQuestion: 64. Which protocol uses UDP port 520 by default for traditional IPv4 RIP communication?<\/b><\/p>\n\n- <\/b> OSPF<\/span>
\n<\/span>2.<\/b> BGP<\/span>
\n<\/span>3.<\/b> RIP<\/span>
\n<\/span>4.<\/b> IS-IS<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3. RIP<\/span><\/p>\nExplanation:<\/b><\/p>\n
Routing Information Protocol traditionally uses UDP port 520 for IPv4 RIP communication. RIP is a distance-vector routing protocol that exchanges routing information with neighboring routers and uses hop count as its primary metric. OSPF does not use UDP or TCP; it runs directly over IP. BGP uses TCP port 179, while IS-IS operates directly at the data-link layer. Knowing protocol transport characteristics can help troubleshoot firewall filters and connectivity problems. If RIP updates are not being exchanged, checking the appropriate interface configuration, routing process, and filtering behavior is important.<\/span><\/p>\nQuestion: 65. What is the primary function of a default route?<\/b><\/p>\n\n- <\/b> Identify every directly connected host<\/span>
\n<\/span>2.<\/b> Provide a route when no more-specific destination route exists<\/span>
\n<\/span>3.<\/b> Replace all dynamic routing protocols<\/span>
\n<\/span>4.<\/b> Assign default DNS servers to clients<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2. Provide a route when no more-specific destination route exists<\/span><\/p>\nExplanation:<\/b><\/p>\n
A default route provides a fallback forwarding path when the routing table does not contain a more-specific route for the destination. In IPv4, the common default route is <\/span>0.0.0.0\/0<\/span>, while IPv6 uses <\/span>::\/0<\/span>. A router can use the default route to forward traffic toward an upstream provider or another routing domain. The default route does not identify every directly connected host and does not replace dynamic routing protocols in general. It also has no direct role in assigning DNS information to clients. Proper default-route configuration is especially important at network edges.<\/span><\/p>\nQuestion: 66. Which Junos routing protocol is commonly used as a link-state IGP in large service-provider networks and supports a Level 1\/Level 2 hierarchy?<\/b><\/p>\n\n- <\/b> RIP<\/span>
\n<\/span>2.<\/b> BGP<\/span>
\n<\/span>3.<\/b> VRRP<\/span>
\n<\/span>4.<\/b> IS-IS<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 4. IS-IS<\/span><\/p>\nExplanation:<\/b><\/p>\n
IS-IS is a link-state interior gateway protocol that uses Level 1 and Level 2 routing to provide hierarchical network operation. Level 1 routing handles destinations within an area, while Level 2 routing provides connectivity between areas. Its scalability and protocol design have made IS-IS widely used in service-provider environments. BGP is an exterior gateway protocol, RIP is a distance-vector protocol, and VRRP provides first-hop gateway redundancy rather than routing-domain topology calculation. When studying Junos routing, understanding IS-IS levels, adjacencies, link-state databases, and route installation is important for troubleshooting large routed networks.<\/span><\/p>\nQuestion: 67. Which BGP attribute is generally used to influence how traffic enters an autonomous system when multiple links exist to the same neighboring AS?<\/b><\/p>\n\n- <\/b> MED<\/span>
\n<\/span>2.<\/b> Local preference<\/span>
\n<\/span>3.<\/b> Router ID<\/span>
\n<\/span>4.<\/b> Origin<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. MED<\/span><\/p>\nExplanation:<\/b><\/p>\n
The Multi-Exit Discriminator, or MED, is commonly used to suggest a preferred entry point into an autonomous system when multiple links connect that AS to the same neighboring autonomous system. A lower MED is generally preferred when comparing otherwise eligible routes from the same neighboring AS. MED is therefore commonly associated with influencing inbound traffic. Local preference serves a different purpose and is primarily used within an AS to influence outbound traffic. Router ID and origin are also part of BGP processing but do not provide the same traffic-engineering function as MED.<\/span><\/p>\nQuestion: 68. Which IPv6 address type is intended for communication with a group of receivers?<\/b><\/p>\n\n- <\/b> Link-local<\/span>
\n<\/span>2.<\/b> Global unicast<\/span>
\n<\/span>3.<\/b> Multicast<\/span>
\n<\/span>4.<\/b> Loopback<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3. Multicast<\/span><\/p>\nExplanation:<\/b><\/p>\n
IPv6 multicast addresses identify groups of interfaces rather than a single interface. Packets sent to a multicast address can be delivered to multiple interested receivers that have joined the corresponding multicast group. IPv6 multicast addresses use the <\/span>FF00::\/8<\/span> range. Link-local addresses are intended for communication on the local link, global unicast addresses provide routable unicast communication, and the loopback address identifies the local host itself. IPv6 relies heavily on multicast for control functions such as Neighbor Discovery, making an understanding of multicast addressing important when troubleshooting IPv6 networks.<\/span><\/p>\nQuestion: 69. Which Junos command can be used to display system alarms?<\/b><\/p>\n\n- <\/b> show system alarms<\/span>
\n<\/span>2.<\/b> show route<\/span>
\n<\/span>3.<\/b> show ospf database<\/span>
\n<\/span>4.<\/b> show ethernet-switching table<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1. show system alarms<\/span><\/p>\nExplanation:<\/b><\/p>\n
The <\/span>show system alarms<\/span> command displays active system alarms on a Junos device. These alarms can indicate hardware, environmental, or other system conditions that may require administrator attention. Checking system alarms is useful when investigating unexpected device behavior, especially when hardware or environmental issues may be involved. Routing commands provide information about network reachability, while Ethernet-switching and OSPF commands focus on Layer 2 and routing operations. A systematic troubleshooting process should consider both network configuration and device health, making system-alarm information an important operational resource.<\/span><\/p>\nQuestion: 70. Which OSPF network type commonly uses a designated router and backup designated router on an Ethernet segment?<\/b><\/p>\n\n- <\/b> Point-to-point<\/span>
\n<\/span>2.<\/b> Broadcast<\/span>
\n<\/span>3.<\/b> Loopback<\/span>
\n<\/span>4.<\/b> Passive<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2. Broadcast<\/span><\/p>\nExplanation:<\/b><\/p>\n
Ethernet networks are commonly treated as broadcast OSPF networks. On such networks, OSPF can elect a designated router and backup designated router to reduce the number of full adjacencies required between all participating routers. The DR represents the multiaccess segment in the OSPF topology and helps coordinate link-state flooding. Point-to-point links generally do not require DR or BDR elections because only two routers participate in the link. Loopback interfaces and passive interfaces have different purposes and do not represent the same OSPF network type behavior. Correct network-type configuration is important for stable OSPF adjacencies.<\/span><\/p>\nQuestion: 71. What is the primary purpose of a BGP route reflector client relationship?<\/b><\/p>\n\n- <\/b> Provide IPv6 address autoconfiguration<\/span>
\n<\/span>2.<\/b> Reduce the number of required iBGP sessions<\/span>
\n<\/span>3.<\/b> Increase Ethernet MTU<\/span>
\n<\/span>4.<\/b> Replace OSPF hello packets<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2. Reduce the number of required iBGP sessions<\/span><\/p>\nExplanation:<\/b><\/p>\n
A BGP route reflector reduces the need for a full mesh of iBGP sessions by allowing selected routers to act as route reflectors for client routers. The reflector can receive eligible routes from clients and reflect them to other clients or non-client peers according to BGP rules. This improves scalability in networks with many internal BGP speakers. Route reflection does not provide IPv6 address configuration, change Ethernet MTU, or replace OSPF Hello messages. When designing route-reflector topologies, administrators must understand cluster identifiers, client relationships, and route-reflection behavior.<\/span><\/p>\nQuestion: 72. Which Junos command is useful for displaying the routes learned through a particular routing protocol?<\/b><\/p>\n\n- <\/b> show chassis hardware<\/span>
\n<\/span>2.<\/b> show interfaces terse<\/span>