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Q1. Which network mask is the equivalent of 255.255.248.0?
A. /20
B. /21
C. /22
D. /23
Answer: B
Q2. Which statement is true regarding an Ethernet collision domain?
A. If a router is used, the collision domain includes all devices connected to the router.
B. If a hub is used, the collision domain is limited to each device and the hub.
C. If a switch is used, the collision domain is limited to each device and the switch.
D. If a bridge is used, the collision domain includes all devices connected to the bridge.
Answer: C
Q3. Which user authentication method is supported by the Junos OS as a last resort alternative?
A. TACACS+
B. RADIUS
C. local user database
D. enable password
Answer: C
Q4. In the MAC address 00: : :9f:eA. , what represents the Organizationally Unique Identifier (OUI)?
A. :9f:eA.
B. 00: : :9f
C. 9f:eA.
D. 00: :
Answer: D
Q5. Which statement is true regarding the Junos OS?
A. All platforms running the Junos OS separate the functions of learning and flooding.
B. All platforms running the Junos OS separate the functions of control and forwarding.
C. All platforms running the Junos OS separate the functions of routing and bridging.
D. All platforms running the Junos OS separate the functions of management and routing.
Answer: B
Q6. You need to control SSH, HTTP, and Telnet access to an MX240 router through any interface. You have decided to use a firewall filter.
How should you apply the firewall filter?
A. as an outbound filter on interface fxp0
B. as an outbound filter on interface lo0
C. as an inbound filter on interface fxp0
D. as an inbound filter on interface lo0
Answer: D
Q7. Which two fields are found in an Ethernet frame header? (Choose two.)
A. TTL
B. flags
C. checksum
D. type
Answer: C,D
Q8. 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
Q9. Which two statements about MPLS label-switched paths (LSPs) are true? (Choose two.)
A. LSPs are bidirectional.
B. LSPs are unidirectional.
C. LSPs must follow the IGP's shortest path.
D. LSPs can follow paths other than the IGP's shortest path.
Answer: B,D
Q10. What is the default action for firewall filters?
A. accept
B. reject
C. discard
D. log
Answer: C