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2021 Sep JN0-102 question
Q131. What represents the decimal equivalence of 11100101?
A. 5
B. 93
C. 177
D. 229
Answer: D
Q132. -- Exhibit --firewall {
filter select-telnet {
term 1 {
from {
source-address {
10.0.0.0/8;
}
}
then log;
}
term 2 {
from {
protocoltcp;
port telnet;
}
then {
syslog;
reject;
}
}
term 3 {
from {
source-address {
10.1.1.1/32;
}
protocoltcp;
port telnet;
}
then {
sample;
accept;
}
}
}
}
-- Exhibit --
A Telnet session is initiated from host 10.1.1.1.
What will happen when it is processed by the firewall filter shown in the exhibit?
A. The packet will be accepted and logged.
B. The packet will be discarded and logged.
C. The packet will be rejected and a syslog message generated.
D. The packet will be accepted and sampled.
Answer: A
Q133. Which command will silently drop a matching packet?
A. set routing-options static route 10.1.1.1/32 no-retain
B. set routing-options static route 10.1.1.1/32 discard
C. set routing-options static route 10.1.1.1/32 reject
D. set routing-options static route 10.1.1.1/32 passive
Answer: B
Q134. -- Exhibit --
traceroute to 10.1.15.2 (10.1.15.2), 30 hops max, 40 byte packets
1 10.1.36.1 (10.1.36.1) 0.651 ms 7.834 ms 0.506 ms
2 10.1.23.1 (10.1.23.1) 0.5 ms 0.5 ms 0.5 ms
3 * * *
4 * * *
-- Exhibit --
Referring to the exhibit, which statement is correct?
A. The packets have exceeded the time-to-live value.
B. There is a loop.
C. The asterisks indicate a response time out.
D. The asterisks indicate that the traceroute is completed.
Answer: C
303. -- Exhibit --user@router# run show route /24 inet.0: 142 destinations, 142 routes (141 active, 0 holddown, 1 hidden)
+ = Active Route, - = Last Active, * = Both
/24 *[OSPF/10] 04:10:20 >to 172.25.213.11 via ge-1/0/1.0 to 172.25.213.23 via ge-1/0/2.0 -- Exhibit --
In the exhibit, what does the (>) symbol indicate?
A. There is a software issue with ge-1/0/1.0 interface.
B. There is a hardware issue with ge-1/0/1.0 interface.
C. The next hop of 172.25.213.11 is selected.
D. The next hop of 172.25.213.11 is not resolvable.
Answer: C
Q135. A network administrator wants to verify the active alarms on interface so-0/0/0.0.
Which command displays this information?
A. show interfaces alarms
B. show interfaces terse
C. show alarms extensive
D. show interfaces extensive
Answer: D
Renewal JN0-102 free practice test:
Q136. Which command will show the best paths that are installed in the PFE?
A. show route
B. show route active-path
C. show route private
D. show route forwarding-table
Answer: D
Q137. What must be configured prior to the first commit after factory defaults are loaded?
A. root authentication B. default gateway
C. host name
D. management services
Answer: A
Q138. Which statement is true about a routing table?
A. It contains routes learned dynamically only.
B. It finds the best path to each destination by using a modified shortest-path-first calculation.
C. It contains only active BGP routes.
D. It contains all accepted routes to all destinations.
Answer: D
Q139. 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.
Answer: A,D
Q140. Which two statements are true about static routes in the Junos OS? (Choose two.)
A. Static routes are defined at the [edit routing-instances] hierarchy.
B. Static routes must have a next hop defined.
C. Static routes remain in the routing table until you remove them or until they become inactive.
D. Static routes are learned by neighboring devices and added to their routing tables.
Answer: B,C