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Q1. What are three physical interface properties? (Choose three.)
A. payload scrambling
B. virtual circuit identifier
C. FCS
D. link speed
E. IP address
Answer: A,C,D
Q2. 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
Q3. Which statement is true regarding the Junos OS?
A. The Junos kernel is based on the Solaris operating system.
B. The Junos kernel is based on the GNU Zebra operating system.
C. The Junos kernel is completely original and not based on any other operating system.
D. The Junos kernel is based on the FreeBSD UNIX operating system.
Answer: D
Q4. Which two statements are true regarding the use of NTP clock synchronization? (Choose two.)
A. The Junos OS supports client, server, and symmetric modes of NTP operation.
B. Synchronized time on all network devices makes log messages more useful for troubleshooting.
C. Authentication methods are not supported.
D. The Junos OS must be used as the primary time reference.
Answer: A,B
Q5. You have been allocated a /22 network.
How many usable hosts are available?
A. 510
B. 512
C. 1022
D. 1024
Answer: C
Q6. What are three benefits of using IPv6? (Choose three.)
A. IPv6 supports a greater level of security by integrating features that were optional add-ons in IPv4.
B. IPv6 reduces administrative overhead using stateless address autoconfiguration for hosts.
C. IPv6 eliminates the need for private to public NAT using a large address pool.
D. IPv6 provides backward compatibility with IPv4 using the Next Header field.
E. IPv6 represents large IP addresses using dotted decimal notation.
Answer: A,B,C
Q7. -- Exhibit --
user@router> show route protocol static
inet.0: 12 destinations, 12 routes (12 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
192.168.1.128/27 *[Static/5] 00:03:13 >to 10.20.106.10 via fe-0/0/5.1 192.168.1.144/29 *[Static/5] 00:03:13 >to 10.20.14.131 via ge-0/0/0.0 192.168.1.192/27 *[Static/5] 00:03:13 >to 10.18.1.1 via ge-0/0/1.0 192.168.1.128/28 *[Static/5] 00:01:06 >to 10.20.14.130 via ge-0/0/0.0 -- Exhibit --
Given the routing entries shown in the exhibit, which next-hop IP address will be used for the destination IP address 192.168.1.142? (Assume that only static routes are available for the destination.)
A. 10.20.106.10
B. 10.20.14.131
C. 10.18.1.1
D. 10.20.14.130
Answer: D
Q8. When using the monitor traffic command on Junos devices, which UNIX-based utility is accessed?
A. snoop
B. tcpdump
C. monitor
D. tail
Answer: B
Q9. Which process is responsible for the routing protocols on a Junos device?
A. rpd
B. mgd
C. dcd
D. chassisd
Answer: A
Q10. Which statement is true regarding the forwarding plane?
A. The forwarding plane is contained within the Routing Engine (RE).
B. The forwarding plane processes and evaluates exception traffic.
C. The forwarding plane contains the Packet Forwarding Engine (PFE).
D. The forwarding plane is not present on all platforms running the Junos OS.
Answer: C
Q11. 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
Q12. How do you write the current candidate configuration to the permanent storage media?
A. [edit]
user@router# save /var/tmp/current.conf
B. [edit]
user@router# write /var/tmp/current.conf
C. [edit]
user@router# commit /var/tmp/current.conf
D. [edit]
user@router# dump /var/tmp/current.conf
Answer: A
Q13. -- Exhibit – -- Exhibit --
You have been asked to establish reachability between Router 1's and Router 2's loopback addresses as shown in the exhibit.
Which two steps will accomplish this task? (Choose two.)
A. Create a static route on Router 1 to 172.17.28.1 with a next hop of 10.10.10.2.
B. Create a static route on Router 1 to 172.17.28.1 with a next hop of 10.10.10.1.
C. Create a static route on Router 2 to 172.17.25.1 with a next hop of 10.10.10.1.
D. Create a static route on Router 1 to 172.17.25.1 with a next hop of 10.10.10.2.
Answer: A,C
Q14. Which statement describes exception traffic?
A. Exception traffic must be sent to the PFE for processing.
B. Exception traffic enters one ingress port and is sent out multiple egress ports.
C. Exception traffic is rate-limited on the internal link to prevent DoS attacks.
D. Exception traffic is processed after forwarding traffic when congestion exists.
Answer: C
Q15. What is an advantage of dynamic routing?
A. Unlike static routing, dynamic routing provides redundant IP addresses for end-user devices.
B. Unlike static routing, dynamic routing requires no initial user configuration.
C. Dynamic routing can provide increased network availability when compared to static routing.
D. Dynamic routing provides DNS services along with IP connectivity; static routing does not.
Answer: C