JN0-343 Online Practice Questions and Answers

Which command can be used to verify whether a BGP prefix is being advertised to a specific neighbor?

A. show route protocol bgp

B. show bgp summary

C. show bgp neighbor

D. show route advertising-protocol bgp

What is the default value of the link-state advertisement (LSA) refresh timer in the Junos OS?

A. 10 minutes

B. 30 minutes

C. 50 minutes

D. 60 minutes

Which OSPF LSA type is sent by all routers in an area to advertise its connected subnets?

A. router

B. network

C. external

D. summary

Which two pieces of information are communicated by IS-IS TLVs? (Choose two.)

A. network protocols supported

B. designated router priority

C. authentication key

D. PDU Length

Which configuration provides dynamic ARP inspection on access port ge-0/0/0?

A. secure-access-port { interface ge-0/0/0.0 { dhcp-trusted; } vlan vlan10 { arp-inspection; examine-dhcp; } }

B. secure-access-port { interface ge-0/0/0.0 { dhcp-trusted; } vlan vlan10 { dynamic-arp-inspection; } }

C. secure-access-port { interface ge-0/0/0.0 { no-dhcp-trusted; } vlan vlan10 { dynamic-arp-inspection; examine-dhcp; } }

D. secure-access-port { interface ge-0/0/0.0 { static-ip 255.255.255.255 } vlan vlan10 { arp-inspection; } }

As shown in the exhibit, Switch-3 receives a superior BPDU from Switch-2 over the ge- 0/0/10.0 interface. Which two statements are correct? (Choose two.)

A. Switch-2's ge-0/0/10.0 port assumes the backup role and blocking state.

B. Switch-3's ge-0/0/10.0 port assumes the designated role and forwarding state.

C. Switch-2's ge-0/0/10.0 port assumes the designated role and forwarding state.

D. Switch-3's ge-0/0/10.0 port assumes the alternate role and blocking state.

Which two events trigger an IS-IS LSP to be sent to a neighboring IS? (Choose two)

A. When a new IS-IS neighbor is detected.

B. When the cost of a link to an existing IS-IS neighbor has changed.

C. When a CSNP requests missing information.

D. When a device does not receive an expected IIH PDU.

-- Exhibit -[edit]

user@router# show routing-options

graceful-restart {

disable;

}

[edit]

user@router# show protocols bgp

graceful-restart;

group my-group {

type internal;

local-address 192.168.1.1;

neighbor 192.168.1.2;

neighbor 192.168.2.2 {

graceful-restart {

disable;

}

}

}

-- Exhibit -You have configured your router as shown in the exhibit.

Which statement is true based on the graceful restart (GR) configuration?

A. GR has been disabled globally for all protocols including BGP.

B. GR is enabled for all BGP neighbors.

C. GR is enabled only for BGP neighbor 192.168.1.2.

D. GR is not supported with BGP.

Which two statements describe the behavior of Dynamic ARP Inspection? (Choose two.)

A. Dynamic ARP Inspection is disabled by default.

B. Dynamic ARP Inspection is enabled on individual ports.

C. Dynamic ARP Inspection is enabled by default.

D. Dynamic ARP Inspection is enabled on individual VLANs.

A link has failed in your IS-IS network.

Which type of PDU is triggered because of the failure?

A. CSNP PDU

B. PSNP PDU

C. link-state PDU

D. hello PDU

-- Exhibit ?

-- Exhibit -The exhibit shows three switches interconnected using RSTP.

What is the role of Port B?

A. designated

B. root

C. alternate

D. backup

-- Exhibit ?

-- Exhibit -Referring to the exhibit, which three elements must be configured to allow communication between Host A and Host B, and between Host C and Host D? (Choose three.)

A. The ports connecting to the hosts must be configured as access ports.

B. The ports connecting to the hosts must be configured as trunk ports.

C. The ge-0/0/1 interface must be configured as a trunk port.

D. The ge-0/0/1 interface must be configured for a routed VLAN interface.

E. The ge-0/0/1 interface must be configured for a native VLAN.

You want to enable IS-IS on your Junos device, with ge-0/0/1 as a Level 2 only interface. Which commands are necessary?

A. set interfaces lo0 unit 0 family iso address 49.0001.0921.0168.0201.00 set interfaces ge-0/0/1 unit 0 family iso set protocols isis interface ge-0/0/1 level 1 disable

B. set protocols isis interface ge-0/0/1 enable set interfaces lo0 unit 0 family iso address 49.0001.0921.0168.0201.00 set interfaces ge-0/0/1 unit 0 family iso level 1 disable

C. set interfaces lo0 unit 0 family iso address 49.0001.0921.0168.0201.00 set interfaces ge-0/0/1 unit 0 family iso level 2

D. set protocols isis interface ge-0/0/1 enable set interfaces lo0 unit 0 family iso address 49.0001.0921.0168.0201.00 set interfaces ge-0/0/1 unit 0 family iso level 2

Referring to the exhibit, what does the asterisk (*)following the ge-0/0/12.0 interface indicate?

A. It indicates the interface is active.

B. It indicates the interface is not active.

C. It indicates the interface is a trunk port.

D. It indicates the interface is an access port.

Which two prefixes are martian routes by default? (Choose two.)

A. 192.0.0.0/24

B. 127.0.0.0/8

C. 192.0.0.0/16

D. 127.0.0.0/16