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Q1. Which two statements are true regarding an Ethernet collision domain? (Choose two.)
A. If a switch is used, the collision domain is limited to each device and the switch.
B. If a hub is used, the collision domain is limited to each device and the hub.
C. If a hub is used, the collision domain includes all devices connected to the hub.
D. If a switch is used, the collision domain includes all devices connected to the switch.
Answer: A,C
284. Two devices on an Ethernet segment sent frames at the same time causing a collision.
Which two statements are true? (Choose two.)
A. Both devices stop transmitting, wait a random period of time, verify the wire is idle, and re-transmit.
B. The device with the lowest MAC address is permitted to retransmit first.
C. The device with the lowest MAC address sends a jam signal to notify all other devices of the collision.
D. Both devices send a jam signal to notify all other devices of the collision.
Q2. You are modifying the default route preference under the [edit protocols] hierarchy.
In which two routing information sources can you change the default preference value? (Choose two.)
A. local
B. OSPF
C. direct
D. BGP
Answer: B,D
Q3. How does the PFE handle unicast transit traffic destined for an existing forwarding table entry?
A. It sends the traffic through one egress port toward its destination.
B. It sends the traffic through multiple egress ports to all available receivers.
C. It sends the traffic through an internal link to the RE.
D. It sends the traffic to the local system for further processing.
Answer: A
Q4. -- Exhibit --
interfaces {
ge-0/0/8 {
unit 0 {
family inet {
address 192.168.1.1/24;
}
}
}
ge-0/0/9 {
unit 0 {
family inet {
address 192.168.10.1/24;
}
}
}
}
-- Exhibit --
Referring to the exhibit, which command would you use to add an additional address to the ge-0/0/9.0 interface?
A. [edit interfaces ge-0/0/9 unit 0]
user@router# set family inet address /24
B. [edit interfaces ge-0/0/9 unit 0]
user@router# set family inet secondary-address /24
C. [edit interfaces ge-0/0/9 unit 0]
user@router# set family inet address /24 secondary
D. [edit interfaces ge-0/0/9 unit 0]
user@router# set family inet address-secondary /24
Answer: A
Q5. Which CLI command do you use to determine which files are cleanup candidates?
A. request system storage cleanup candidates
B. request system services storage candidates
C. request system services candidate cleanup
D. request system storage cleanup dry-run
Answer: D
Q6. -- Exhibit – -- Exhibit --
Referring to the exhibit, you want to block HTTP access to Web-Server from the subnet where Mal-User is located. All other traffic should be permitted.
Which firewall filter configuration do you use?
A. [edit firewall family inet filter STOP-MAL-USER]
user@router# show
term one {
from {
source-address {
200.200.200.0/24;
}
destination-address {
100.100.100.10/32;
}
protocoltcp;
destination-port http;
}
then accept;
}
term two {
then {
reject;
}
}
B. [edit firewall family inet filter STOP-MAL-USER]
user@router# show
term one {
from {
source-address {
100.100.100.0/24;
}
destination-address {
200.200.200.1/32;
}
protocoltcp;
destination-port http;
}
then accept;
}
term two {
then {
reject;
}
}
C. [edit firewall family inet filter STOP-MAL-USER]
user@router# show
term one {
from {
source-address {
100.100.100.0/24;
}
destination-address {
200.200.200.1/32;
}
protocoltcp;
destination-port http;
}
then reject;
}
term two {
then {
accept;
}
}
D. [edit firewall family inet filter STOP-MAL-USER]
user@router# show
term one {
from {
source-address {
200.200.200.0/24;
}
destination-address {
100.100.100.10/32;
}
protocoltcp;
destination-port http;
}
then reject;
}
term two {
then {
accept;
}
}
Answer: D
Q7. Which command do you use as a valid way to view the PICs within a router as well as the PICs' serial numbers?
A. show chassis hardware
B. show chassis interfaces
C. show chassis pic
D. show chassis inventory
Answer: A
Q8. By default, if equal-cost paths exist for the same destination, which action will the router take?
A. Drop half the traffic.
B. Make a copy of the traffic and send it to both destinations.
C. Load-balance traffic between the available paths.
D. Randomly select one of the available paths to send traffic.
Answer: D
Q9. Which two design goals describe the Junos OS design? (Choose two.)
A. clean separation of security and routing policies
B. clean separation of control and forwarding planes
C. modularization of multiple software processes
D. a single hardware platform for all software applications
Answer: B,C
Q10. -- Exhibit --[edit]
user@router# show | compare
[edit protocols ospf area 0.0.0.0]
-interface ge-0/0/0.0 {
-disable;
-}
[edit protocols ospf]
area 0.0.0.0 { ... }
+
area 0.0.0.1 {
+
interface ge-0/0/0.0;
+
}
-- Exhibit --
Referring to the exhibit, what are two differences between the active and candidate configurations? (Choose two.)
A. The ge-0/0/0 interface was added to the candidate configuration.
B. Area 0 was added to the active configuration.
C. Area 1 was added to the candidate configuration.
D. The ge-0/0/0 interface was added to the active configuration.
Answer: A,C
Q11. You must apply the family inet configuration parameter only to Gigabit Ethernet interfaces that are in FPC 2.
Which output applies to this configuration?
A. [edit groups]
user@router# show
ge-int {
interfaces {
<ge-*> {
unit 0 {
familyinet;
}
}
}
}
B. [edit groups]
user@router# show
ge-int {
interfaces {
<*> {
unit 0 {
familyinet;
}
}
}
}
C. [edit groups]
user@router# show
ge-int {
interfaces {
<*-2/*/*> {
unit 0 {
familyinet;
} } } }
D. [edit groups]
user@router# show
ge-int {
interfaces {
<ge-2/*> {
unit 0 {
familyinet;
}
}
}
}
Answer: D
Q12. You are asked to change the cable on interface ge-0/2/1.
Which statement is correct?
A. The cable is found on slot 2, port 0, and FPC 1.
B. The cable is found on FPC 0, slot 1, and port 2.
C. The cable is found on port 1, slot 0, and FPC 2.
D. The cable is found on slot 2, port 1, and FPC 0.
Answer: D
Q13. Which word starts a command to add configuration on a Junos device?
A. get
B. set
C. put
D. show
Answer: B
Q14. You have been asked to configure your router to send link-related SNMP trap notifications to the network management system (NMS) located at address 172.16.17.1.
Which two commands are required? (Choose two.)
A. set snmp trap-group my-trap-group targets 172.16.17.1
B. set snmp targets 172.16.17.1
C. set snmp trap-group my-trap-group link-status
D. set snmp trap-group my-trap-group categories link
Answer: A,D
Q15. Which two statements are true when using the configure exclusive CLI command? (Choose two.)
A. Multiple users can enter configuration mode and have their own private configuration.
B. When a user commits, only the user's changes are committed.
C. A message indicates which other users are in configuration mode and what portion of the configuration they are editing.
D. Only a single user can edit the configuration.
Answer: B,D