What are three reasons a router would send out an IS-IS link-state PDU? (Choose three.)
- A . A new external route is imported from BGP.
- B . The router’s link to a neighbor goes down.
- C . A new neighbor exists on the link.
- D . The cost of a link to an existing neighbor has changed.
- E . IS-IS sends link-state PDUs at random intervals.
You have an OSPF NSSA area that is also receiving IS-IS routes on the ASBR.
In this scenario, which LSA type is used to announce external IS-IS routes?
- A . Type 7
- B . Type 8
- C . Type 1
- D . Type 4
You are a service provider and have multiple customers in a building.
You are installing a new switch that can host all of your customers. However, you would like to ensure that one customer cannot see or broadcast to another customer.
You would also like to have them use a common gateway IP address from the building.
What should be used to provide this access?
- A . VLAN
- B . private VLAN
- C . filter-based VLAN
- D . Layer 2 tunneling
You are troubleshooting OSPF issues on your device.
You run a trace log and receive the error shown in the exhibit.
What would case this error?
- A . missing route policy
- B . stub area mismatch
- C . MD5 authentication error
- D . subnet mismatch
Click the Exhibit button.
Referring to the exhibit, which set of interfaces is enabled for Ethernet switching?
- A . ge-0/0/6, ge-0/0/7, and ge-0/0/8
- B . ge-0/0/6, ge-0/0/8, and ge-0/0/10
- C . ge0/0/6, ge-0/0/7, ge-0/0/8, and ge-0/0/10
- D . ge-0/0/6 and ge-0/0/8
Your BGP router receives routes from two upstream ISPs: ISP A and ISP B.
In this scenario, which change would you make to prefer routes from ISP A?
- A . Set the local-preference attribute for all routes received from ISP A to 200 while all routes received from ISP B use the default local-preference value of 100.
- B . Prepend the AS path to all routes received from ISP A while all routes received from ISP B use the default AS path value.
- C . Change the MED value for all routes received from ISP A to 1 while all routes from ISP B remain configured with no MED value.
- D . Set the local-preference attribute for all routes received from ISP A to 50 while all routes received from ISP B use the default local-preference value of 100.
What kind of filter would be written to protect control traffic destined for the switch?
- A . A filter applied to the default VLAN
- B . A filter applied to the native VLAN
- C . A filter applied to the management interface
- D . A filter applied to the loopback interface
Which three link-specific fields must match between OSPF neighbors before they form an adjacency over a broadcast medium? (Choose three.)
- A . router priority
- B . hello interval
- C . neighbor
- D . dead interval
- E . options
What types of authentication are supported in Junos for OSPF?
- A . Simple password
- B . MD5 checksum
- C . Hitless key chain of MD5 keys/checksums
- D . All of the above
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
- A . The router is acting as the DR.
- B . The router is acting as the BDR.
- C . The router is acting as a DROther.
- D . The router is not able to establish an adjacency.
What are two Layer 2 firewall filter types? (Choose two.)
- A . port-based
- B . packet-based
- C . flow-based
- D . VLAN-based
When electing a DIS in an IS-IS network, what is used to break a priority tie?
- A . highest router ID
- B . highest MAC address
- C . lowest MAC address
- D . lowest router ID
B
Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/concept/routing-protocol-is-is-security-designated-router-understanding.html
Which OSPF area type receives only the default route from the backbone?
- A . transmit area
- B . totally stubby area
- C . not so stubby area
- D . stub area
Click the Exhibit button.
You are responsible for managing a Layer 2 network using RSTP for loop prevention. You recently committed the configurations shown in the exhibit. Unfortunately, Switch-2 became the root bridge and you must ensure that Switch-1 becomes the root bridge, when available, for this RSTP topology.
Referring to the exhibit, which configuration change should be performed?
- A . Configure the ge-0/0/1 and ge-0/0/8 interfaces on Switch-1 to have a priority of 255.
- B . Configure the system MAC on Switch-1 to be higher than the other two switches.
- C . Configure the bridge-priority on Switch-1 as 4k.
- D . Configure the ge-0/0/1 and ge-0/0/8 interfaces on Switch-1 to have a cost of 0.
You have an IBGP neighbor sending you routes. You need to apply a policy so it only evaluates routes being learned from this specific neighbor.
In this scenario, which statement is correct about applying the policy?
- A . The policy should be applied as an export policy to the BGP group level.
- B . The policy should be applied as an import policy to the BGP group level.
- C . The policy should be applied as an export policy to the BGP neighbor level.
- D . The policy should be applied as an import policy to the BGP neighbor level.
Click the Exhibit button.
Referring to the exhibit, what does the asterisk (*) following the ge-0/0/5.0 interface indicate?
- A . It indicates the interface is not active.
- B . It indicates the interface is a trunk port.
- C . It indicates the interface is an access port.
- D . It indicates the interface is active.
Click the Exhibit button.
You are implementing the network shown in the exhibit. You must ensure that all users can communicate with each other.
What are three steps that should be taken in this scenario? (Choose three.)
- A . You must specify the appropriate Layer 3 IRB interface under each VLAN.
- B . You must define all ports as trunk ports and include all VLANs as members.
- C . You must define all ports as access ports and include the appropriate VLAN as a member.
- D . You must configure a single logical IRB interface with an IP address for each of the three networks.
- E . You must create a unique logical IRB interface for each network and assign an IP address within the appropriate network.
Which two statements about Martian addresses are correct? (Choose two.)
- A . Martian addresses require a route prefix match type.
- B . Martian addresses are not installed in the routing table by default.
- C . Martian addresses can only be applied to the inet.0 routing table.
- D . Martian addresses are installed in the routing table by default.
You are asked to configure filter-based forwarding (FBF) to forward traffic sourced from a specific subnet to a webserver.
In this scenario, which mechanism is used to add interface routes to the forwarding routing instance used in FBF?
- A . generated routes
- B . RIB groups
- C . forwarding policy
- D . routing policy
What are two interarea OSPF LSA types? (Choose two.)
- A . Type 1 router LSAs
- B . Type 2 network LSAs
- C . Type 3 summary LSAs
- D . Type 4 ASBR summary LSAs
Which two statements about aggregate routes in the Junos OS are correct? (Choose two.)
- A . An aggregate route has a default next hop of an IP address.
- B . An aggregate route always shows as active in the routing table.
- C . An active route can contribute only to a single aggregate route.
- D . Only one aggregate route can be configured for each destination prefix.
Which mechanism is used to share routes between routing tables?
- A . RIB groups
- B . routing instances
- C . forwarding instances
- D . filter-based forwarding
Which two statements about a unified ISSU are correct? (Choose two.)
- A . It requires that Bidirectional Forwarding Detection be disabled.
- B . It requires that graceful Routing Engine switchover be enabled.
- C . It is only supported on platforms with redundant control planes.
- D . It is only supported on platforms with redundant power supplies.
The next hop for the route is not reachable.
In this scenario, what are two ways that BGP handles this route? (Choose two.)
- A . The route is placed into the forwarding table as an inactive route.
- B . The route is not placed into the forwarding table.
- C . The route is placed into the routing table as a hidden route.
- D . The route is placed into the forwarding table as a hidden route.
Click the Exhibit button.
A routing table contains multiple BGP routes to the same destination prefix. The route preference is the same for each route.
Referring to the exhibit, which route would be selected?
- A . route B
- B . route D
- C . route A
- D . route C
Click the Exhibit button.
Referring to the output shown in the exhibit, which two statements are correct? (Choose two.)
- A . The device is not an ABR.
- B . The device originated the 192.168.1.2 database entry.
- C . The device originated the 192.168.1.1 database entry.
- D . The device is an ABR.
Click the Exhibit button.
You are building a network and make some configuration changes. While trying to validate these changes, you receive the error shown in the exhibit.
How would you solve this problem?
- A . You must create a new VLAN called all using the VLAN ID of 30.
- B . You must configure the ge-0/0/5.0 interface with family inet instead of family ethernet-switching.
- C . You must configure the port mode as trunk on the ge-0/0/5.0 interface.
- D . You must create two sub-interfaces on ge-0/0/5 with the appropriate VLAN member assigned to each.
Click the Exhibit button.
Referring to the exhibit, which type of route is displayed?
- A . martian
- B . static
- C . generate
- D . aggregate
By default, how long will a learned MAC address be retained in the bridge table on an EX Series switch?
- A . 600 seconds
- B . 3600 seconds
- C . 300 seconds
- D . 1800 seconds
Which two statements about BPDU protection are correct? (Choose two.)
- A . By default, you must manually clear a BPDU error condition when using BPDU protection.
- B . BPDU protection prevents unauthorized switches from connecting to and participating in your spanning tree topology.
- C . By default, BPDU protection prevents the root bridge from communicating with other STP members unless it receives a superior BPDU first.
- D . BPDU protection requires that STP or RSTP is configured on the switch.
Routet-1 and Router-2 must connect through the Internet using a tunneling technology.
Hosts that are connected to Router-1 and Router-2 will be sending traffic up to 1500 bytes.
The maximum segment size that is supported across the path is 1520 bytes.
Which tunneling technology will allow this communication to take place?
- A . IP-IP tunnel
- B . GRE tunnel
- C . IPsec VPN tunnel mode
- D . IPsec VPN transport mode
Exhibit.
You are attempting to set up VRRP with R1 and R2 being participating members. You want R1 to be the master router and R2 to be the backup router with the virtual router they create being at address 172.25.100.1. The virtual router is not pinging from either User A or User B.
Referring to the exhibit, what must be done to correct the problem?
- A . The VRRP group value on R1 and R2 must match.
- B . A VRRP authentication type value is needed on R1 and R2.
- C . A VRRP policy is needed on R1 and R2.
- D . The VRRP priority value on R1 and R2 must match
A
Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/priority-edit-interfaces-vrrp.html
Click the Exhibit button.
Referring to the exhibit, which port will be selected as the RSTP root port on Switch-4?
- A . ge-0/0/13.0
- B . ge-0/0/8.0
- C . ge-0/0/9.0
- D . ge-0/0/12.0
Click the Exhibit button.
Which type of route is shown in the exhibit?
- A . generated
- B . direct
- C . aggregate
- D . static
Which two statements about the root bridge election process are correct? (Choose two.)
- A . The highest root bridge priority is preferred over lower root bridge priorities.
- B . The highest root bridge identifier is preferred over lower root bridge identifiers.
- C . The lowest root bridge priority is preferred over higher root bridge priorities.
- D . The lowest root bridge identifier is preferred over higher root bridge identifiers.
You are concerned that someone from outside the company could use an open conference room port to access the network.
Which feature should you use to address this concern?
- A . persistent MAC learning
- B . 802.1X
- C . DHCP snooping
- D . MAC limiting
Which statement is true about IP-IP tunnels?
- A . The time-to-live value of the original packet Is decremented.
- B . IP-IP tunnels are protocol agnostic.
- C . The packet is encapsulated unchanged before entering the tunnel
- D . The packet header is replaced before entering the tunnel
Which three statements describe what happens when processing a frame for a switched packet? (Choose three.)
- A . The ingress PFE performs the MAC address lookup.
- B . The frame enters the ingress port and is forwarded out all ports.
- C . The frame enters the ingress port and is processed by the ingress PFE.
- D . The ingress PFE sends the header information to the Routing Engine.
- E . The egress PFE forwards the packet out the egress port towards the destination.
You are deploying a new switch configuration at a small branch using EX3400 Series switches. You are concerned about loop prevention.
In this scenario, which configuration would you deploy?
- A . RSTP
- B . EVPN
- C . MPLS
- D . BPDU
Click the Exhibit button.
Which two statements about the configuration shown in the exhibit are correct? (Choose two.)
- A . Two next-hop interfaces should appear in the routing table for the 172.20.112.0/24 prefix.
- B . Multiple equal-cost next hops are installed in the forwarding table for the 192.168.2.0/30 prefix.
- C . The route preference is the same for each static route.
- D . Only the selected next-hop interface should appear in the forwarding table for the 172.20.112.0/24 prefix.