JN0-102 Exam Questions
415 real JN0-102 exam questions with expert-verified answers and explanations. Page 1 of 9.
- Question #1Junos OS Fundamentals
The IP address 10.1.1.1 belongs to which class of IP address space?
IP addressingIPv4 classes - Question #2Junos OS Fundamentals
For the interface ge-1/2/3.4, what does "ge" represent?
Junos interface namingGigabit Ethernet - Question #3User Interface Options
Which word starts a command to display the operational status of a Junos device?
Junos CLIoperational commands - Question #4User Interface Options
Which command prompt indicates that you are in operational mode?
Junos CLI modesoperational mode prompt - Question #5Junos OS Fundamentals
What is the decimal equivalent of 00000100?
binary to decimal conversionnumber systems - Question #6Junos OS Fundamentals
What is a valid IPv6 address?
IPv6 addressingIPv6 format - Question #7Junos OS Fundamentals
Which simplified IPv6 address is the same as the IP address 2001:0000:1000:0000:0000:cbff:0020:0001/64?
IPv6 simplificationIPv6 address format - Question #8Junos OS Fundamentals
What are three characteristics of UDP? (Choose three.)
UDP characteristicsTransport Layerconnectionless - Question #9Junos OS Fundamentals
Which layer in the OSI model is responsible for translating frames into bits?
OSI modelData Link LayerPhysical Layer - Question #10Junos OS Fundamentals
Which layer in the TCP/IP model is responsible for delivering packets to their destination?
TCP/IP modelInternet Layerpacket delivery - Question #11Junos OS Fundamentals
Why is IPv6 packet processing more effective than IPv4 packet processing?
IPv6 headerIPv4 headerpacket processing efficiency - Question #12Junos OS Fundamentals
A user opens a webpage that requires the transmission of packets from the Web server to the client's browser. The packets transmitted from the Web server to the client exceed the s...
packet segmentationMTUpacket sequencingTCP/IP - Question #13Junos OS Fundamentals
Which two statements are true about TCP communication? (Choose two.)
TCP communicationsequencingacknowledgements - Question #14Junos OS Fundamentals
Which two statements are true about optical networks? (Choose two.)
optical networksSONET/SDHmultiplexing - Question #15Junos OS Fundamentals
At which layer of the OSI model does error checking occur with IPv6?
IPv6 error checkingOSI modelTransport Layer - Question #16Junos OS Fundamentals
Which statement is correct regarding IPv6 addresses?
IPv6 address formatIPv6 bit length - Question #17Routing Fundamentals
Which two statements about MPLS label-switched paths (LSPs) are true? (Choose two.)
MPLS LSPsunidirectional pathspath selection - Question #18Junos OS Fundamentals
What are two ways that packet fragmentation is handled differently between IPv6 and IPv4? (Choose two.)
IPv6 fragmentationIPv4 fragmentationMTU discovery - Question #19Routing Fundamentals
In the exhibit, there are four static routes that route traffic through different interfaces. user@router> show route protocol static inet.0: 15 destinations, 15 routes (15 active,...
routing table lookuplongest prefix matchstatic routes - Question #20Junos OS Fundamentals
In dotted decimal notation, what is the equivalent of 11010101 01000010 01111111 11000010?
binary to decimal conversiondotted decimal notationIP addressing - Question #21Routing Fundamentals
What is the binary equivalent of 242.168.94.124?
IPv4binary conversionnetwork addressing - Question #22Routing Fundamentals
What is the last usable IP address in the 218.6.0.0/17 network?
subnettingIPv4 addressingnetwork calculationCIDR - Question #23Routing Fundamentals
What is the network address for the 10.13.147.100/19 host?
subnettingnetwork addressIPv4 addressingCIDR - Question #24Routing Fundamentals
Which two prefixes would summarize the networks shown below? (Choose two.) 192.168.1.0/24 192.168.2.0/24 192.168.3.0/24
route summarizationsupernettingCIDRIPv4 addressing - Question #25Routing Fundamentals
How many host addresses are available in the /28 network?
subnettinghost addressesCIDRnetwork calculation - Question #26Routing Fundamentals
What are three benefits of using IPv6? (Choose three.)
IPv6 benefitsstateless autoconfigurationsecurityaddressing - Question #27Junos OS Fundamentals
Which statement is correct about the forwarding table?
forwarding tableJunos architectureREPFE - Question #28Junos OS Fundamentals
Which statement describes exception traffic?
exception trafficJunos traffic processingPFErate-limiting - Question #29Junos OS Fundamentals
What are two benefits of the modular design of the Junos OS? (Choose two.)
Junos OS designmodular OSmemory protectionprocess restart - Question #30Junos OS Fundamentals
Which statement describes the PFE?
PFEJunos architectureforwarding planeadvanced services - Question #31Junos OS Fundamentals
Which process is responsible for the routing protocols on a Junos device?
Junos processesrpdrouting protocols - Question #32Junos OS Fundamentals
Which process is responsible for the configuration of the router and all user commands on a Junos device?
Junos processesmgdconfiguration management - Question #33Junos OS Fundamentals
How does the PFE handle unicast transit traffic destined for an existing forwarding table entry?
PFEtransit trafficforwarding tableJunos traffic flow - Question #34Junos OS Fundamentals
Which two design goals describe the Junos OS design? (Choose two.)
Junos OS designcontrol planeforwarding planemodularization - Question #35Junos OS Fundamentals
Which two Junos platforms provide stateful firewall functionality? (Choose two.)
Junos platformsSRX SeriesMX Seriesstateful firewall - Question #36Junos OS Fundamentals
What are two examples of RE exception traffic? (Choose two.)
REexception trafficcontrol plane trafficJunos traffic processing - Question #37Junos OS Fundamentals
In the Junos OS, what handles transit traffic?
transit trafficPFEJunos traffic flow - Question #38Junos OS Fundamentals
Which statement describes transit traffic?
transit trafficforwarding tableJunos traffic types - Question #39Junos OS Fundamentals
What is the central processing component of the forwarding plane?
forwarding planePFEJunos architecture - Question #40Junos OS Fundamentals
Which statement is correct regarding the Junos OS?
Junos OScontrol planeforwarding planedesign principles - Question #41Junos OS Fundamentals
What are two functions of the RE? (Choose two).
Routing Engine (RE)Junos architecturecontrol planerouting tables - Question #42Junos OS Fundamentals
Which statement is correct regarding exception traffic processing?
exception trafficJunos architecturecontrol plane protectionREPFE - Question #43User Interface Options
When using keyboard shortcuts, which single keystroke combination allows users to erase the entire current command?
CLI shortcutscommand line editingCtrl+u - Question #44User Interface Options
When using keyboard shortcuts, which keystroke combination allows users to erase a single word to the left of the cursor?
CLI shortcutscommand line editingCtrl+w - Question #45User Interface Options
What must you type to enter operational mode from the root@% command prompt?
CLI modesoperational moderoot shell - Question #46Configuration Basics
Which two commands would you use to discard a candidate configuration? (Choose two.)
candidate configurationrollbackdiscard changesconfiguration management - Question #47Configuration Basics
Which two statements are true about the configure exclusive command? (Choose two.)
configuration modesexclusive configurationuncommitted changesmulti-user - Question #48Operational Monitoring and Maintenance
Which command will display the active configuration?
show configurationactive configurationoperational commands - Question #49Configuration Basics
Which three commands will cause a logical interface to go administratively down after being committed? (Choose three.)
interface configurationinterface statusshutdowndeactivatedisable - Question #50User Interface Options
Which command returns a list of commands in which a given keyword is used throughout the Junos hierarchies?
CLI helphelp aproposcommand search