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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Layer 2 & Layer 3 Protocol Troubleshooting | 15% | - Ethernet, VLAN, STP & LACP - VRRP, BFD & high availability protocols - OSPF, BGP, IS-IS & RIP |
| Topic 2: Control Plane Troubleshooting | 20% | - Routing Engine operations & health - Control plane protection & DDoS mitigation - Protocol control messages & routing tables |
| Topic 3: High Availability & Network Services | 15% | - Graceful restart & non-stop routing - DHCP, DNS, NTP & authentication services - Chassis cluster & redundancy groups |
| Topic 4: Troubleshooting Methodology & Tools | 15% | - Systematic troubleshooting approach - Junos CLI commands & diagnostic utilities - Logging, monitoring & packet capture tools |
| Topic 5: Data Plane & Interfaces Troubleshooting | 20% | - Interface configuration, status & errors - CoS, filters & policer issues - Forwarding table & packet flow analysis |
| Topic 6: Chassis & Hardware Troubleshooting | 15% | - Power, cooling & FPC/PIC issues - Hardware components & status monitoring - Boot process & system startup problems |
Question 1
What is the name of the routing protocol process on a Junos OS device?
A. cosd
B. snmpd
C. chassisd
D. rpd
Question 2
Which two commands help to identify traffic drops due to oversubscription? (Choose two.)
A. show interfaces extensive
B. show interfaces queue
C. monitor interface traffic
D. monitor traffic interface
Question 3
Click the Exhibit button.
-- Exhibit -user@host > show chassis craft-interface
Front Panel System LEDs: Routing Engine 0 1
OK * . Fail . * Master * .
Front Panel Alarm Indicators:
Red LED .
Yellow LED *
Major relay .
Minor relay *
Front Panel FPC LEDs:
FPC 0 1 2 3 4 5 6 7 8 9
Red . . . . . . . . . . Green * * . . . . . . * * CB LEDs:
CB 0 1
Amber . . Green * *
PS LEDs: PS 0 1 2 3 4 5 6 7 8
Red . . . . . . . . . Green . . . . * * * * *
Fan Tray LEDs: FT 0 1 2 3
Red . . . . Green * * * *
Front Panel SFB LEDs: SFB 0 1 2 3 4 5 6 7
Red . . . . . . . . Green * * * * * * * *
Front Panel Chassis Info: Chassis Number 0x0 Chassis Role S
-- Exhibit -
Referring to the exhibit, which statement is true?
A. Routing Engine 1 is OK, the red LED is lit, and the minor alarm relay is on.
B. Routing Engine 1 has failed, yellow LED is lit, and the major alarm relay is on.
C. Routing Engine 1 is OK, the red LED is lit, and the major alarm relay is on.
D. Routing Engine 1 has failed, yellow LED is lit, and the minor alarm relay is on.
Question 4
Click the Exhibit button.
-- Exhibit --
user@R1> show configuration interfaces lo0
unit 5 {
family inet {
filter {
input JUNOS;
}
address 5.5.5.5/32;
}
}
user@R1> show configuration firewall family inet filter JUNOS
term term1 {
from {
protocol tcp;
port [ telnet ftp ftp-data snmp ssh syslog http tacacs 64644 1024-65535 ];
}
then {
log;
accept;
}
}
term default {
then {
discard;
} } -- Exhibit -
Referring to the exhibit, which three statements are true? (Choose three.)
A. R1 will drop all BGP packets.
B. R1 will drop all non-TCP transit traffic.
C. R1 will drop all traffic with destination address 5.5.5.5.
D. R1 will accept telnet traffic.
E. R1 will drop all OSPF packets.
Question 5
Given the example shown below:
Emergency boot media > flash disk > _____
What is missing from the default boot list?
A. USB
B. hard disk
C. LAN
D. PCMCIA card
Solutions:
| Question 1 Answer: D | Question 2 Answer: A,B | Question 3 Answer: D | Question 4 Answer: A,D,E | Question 5 Answer: B |
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