Juniper - Routing and switching

Which two statements are correct regarding Layer 2 network switches? (Choose two.). Switches flood broadcast traffic. Switches are susceptible to traffic loops. Switches do not learn MAC addresses. Switches create a single collision domain.

What are two attributes of the UDP protocol? (Choose two.). UDP is best effort. UDP is always slower than TCP. UDP is connectionless. UDP is more reliable than TCP.

Click the Exhibit button. You are unable to remotely access your Juniper device using the CLI. Referring to the exhibit, which command would you add to the existing configuration to enable remote CLI access?. set system services ssh. load factory-default. set system login idle-timeout 20. set system root-authentication plain-text-password.

You are trying to diagnose packet loss at interface ge-0/0/3. In this scenario, which command would help you view error statistics in real time?. monitor interface ge-0/0/3. show interface ge-0/0/3. show interface terse. monitor interface traffic.

Which prompt indicates that you are using configuration mode?. >. $. #. %.

Which two statements are correct about a Routing Engine? (Choose two.). It processes management traffic. It maintains routing tables. It forwards transit traffic. It processes CoS marked traffic.

What are two methods for navigating to configuration mode from an operational mode prompt? (Choose two.). Use the quit command. Use the configure command. Use the exit command. Use the edit command.

Which statement is correct concerning exception traffic processing?. Exception traffic is discarded by the PFE. Exception traffic is rate-limited to protect the RE. Exception traffic is always dropped during congestion. Exception traffic is never forwarded.

In the Junos OS, which keyboard shortcut allows you to move to the start of the line?. Ctrl+e. Ctrl+a. Ctrl+k. Ctrl+w.

Which two statements apply to the Routing Engine functions? (Choose two.). It does not process routing updates. It responds to ping and traceroute commands. It maintains the routing tables. It processes the transit traffic.

An administrator configures a router's interface with an IPv4 address and subnet mask. The administrator also confirms that this interface is in an up state. In this scenario, which two route types are created on the local router? (Choose two.). a local route. a dynamic route. a static route. a direct route.

Which two statements describe the result when you enter ? at the command-line prompt? (Choose two.). It displays help about a text string contained in a statement. It lists the available commands and options. It displays summary information about the commands and options. It lists tips for the help menu.

What is the primary system log file that is present in the default configuration of a Junos device?. vrrp. kmd. messages. jsrpd.

Which protocol is responsible for learning an IPv4 neighbor's MAC address?. Neighbor Discovery Protocol (NDP). Address Resolution Protocol (ARP). Media Access Control Security (MACsec). Network Address Translation (NAT).

Which two statements are correct about firewall filters? (Choose two.). "Discard" is the default action of packets that are not explicitly allowed. There can be only one firewall filter. There can be multiple firewall filters. "Accept" is the default action of packets that are not explicitly allowed.

Which Junos OS component is responsible for maintaining the forwarding table?. Packet Forwarding Engine. chassis control daemon. Routing Engine. management daemon.

What information does the forwarding table require so that the device forwards traffic? (Choose three.). BGP local preference value. next hop IP address. outgoing interface name. OSPF metric value. next hop MAC address.

Which layer of the OSI model contains the IP address information? A. Layer 2 B. Layer 4 C. Layer 1 D. Layer 3. Layer 2. Layer 4. Layer 1. Layer 3.

Which two statements about route preference in Junos are correct? (Choose two.). Both direct and static routes have the same preference. Both direct and local routes have the same preference. Both OSPF internal and OSPF AS external routes have the same preference. Both EBGP and IBGP routes have the same preference.

What are two link-state routing protocols? (Choose two.). RIP. IS-IS. BGP. OSPF.

Which two statements are correct about the employee@R1> prompt? (Choose two.). You are at a shell prompt. You are in configuration mode. R1 is the hostname of your device. You are in operational mode.

Click the Exhibit button. How is traffic, sourced from 10.0.0.0/8, treated by the firewall filter shown in the exhibit?. logged with no further action. logged and accepted. logged and rejected. logged and discarded.

What does the user@router> clear log ospf-trace command accomplish?. Logging data into ospf-trace is stopped. Trace parameters are removed from the OSPF protocol configuration. Data in the ospf-trace file is removed and logging continues. The ospf-trace file is deleted.

Which character is used to filter the command output in the Junos CLI?. ?. <. |. >.

Which service does RADIUS provide?. routing. authentication. DNS resolution. time synchronization.

You configured your system authentication order using the set authentication-order tacplus radius password command. Which statement is correct in this scenario?. A rejection by TACACS+ will prevent a login and bypass the other two authentication methods. The password authentication will only be used if the TACACS+ and RADIUS servers fail to respond. All authentication methods are used with the most restrictive permission set used. The password authentication method is evaluated if the TACACS+ and RADIUS servers respond with a reject message.

When considering routing policies, which two statements are correct? (Choose two.). An import routing policy for BGP determines which received prefix advertisements are placed in the routing information base. Policy terms are evaluated from top to bottom with action taken on the first match found. Policy terms are evaluated from top to bottom with the most restrictive action taken of all the matching terms. Routing policies are applied to interfaces as input or export filters.

You have just increased the MTU size of interface ge-0/0/0 and committed the configuration. Which command would help you identify the applied MTU change?. monitor traffic interface ge-0/0/0. show interfaces ge-0/0/0. show interfaces ge-0/0/0 terse. monitor interface ge-0/0/0.

Click the Exhibit button. Referring to the exhibit, what is the source IP address of the ping that was executed?. 10.23.0.2. 10.23.0.3. 10.12.0.2. 10.24.0.4.

Click the Exhibit button. Referring to the exhibit, which statement is correct?. Traffic is load-balanced across two routes. The BGP path is the only active route. The OSPF path is the only active route. The BGP route is preferred over the OSPF route.

Which process in the Junos OS is responsible for maintaining routing protocols and tables?. mgd. chassisd. dcd. rpd.

How many login classes are assignable to a user account?. 2. 1. 4. 3.

Your router has a route to the 10.1.1.0/24 network with a next hop of rjct. In this scenario, which action will your router perform when traffic destined to the 10.1.1.0/24 network is received?. The traffic will be discarded and an ICMP unreachable message will be sent to the destination of the traffic. The traffic will be silently discarded. The traffic will be redirected using a default route. The traffic will be discarded and an ICMP unreachable message will be sent to the source of the traffic.

Click the Exhibit button. Referring to the exhibit, where are the configuration backup files stored?. Files are stored to the SCP site and the FTP site in a round-robin manner. Files are stored to the SCP site and the FTP site simultaneously. Files are stored to any site as selected by Junos internally. Files are stored to the SCP site but if the transfer fails, then to the FTP site.

What are two types of transit traffic that traverse the forwarding plane of a Layer 3 router? (Choose two.). exception traffic. broadcast traffic. unicast traffic. multicast traffic.

When considering routing tables and forwarding tables, which two statements are correct? (Choose two.). The routing table is used by the RE to select the best route. The routing table stores all routes and prefixes from all protocols. The forwarding table stores all routes and prefixes from all protocols. The forwarding table is used by the RE to select the best route.

Click the Exhibit button. Referring to the exhibit, what should be configured on R1 to advertise a default static route into OSPF?. a firewall filter. a routing policy. a loopback interface. a management interface.

What are two functions of the routing protocol daemon (rpd)? (Choose two.). It creates forwarding tables. It provides access to the CLI. It maintains routing tables. It generates chassis alarms.

What is the protocol data unit (PDU) of the Data Link Layer?. segment. byte. bit. frame.

By default, how does the PFE manage unicast traffic destined for an existing forwarding table entry?. It sends the traffic through multiple ports toward its destination. It sends the traffic through one port toward its destination. It sends the traffic through the fxp1 interface to the RE. It sends all traffic to the control plane for further processing.

You want to find out the chassis serial number of a Junos device. Which command would display this information?. show chassis environment. show chassis location. show chassis routing-engine. show chassis hardware.

You have completed the initial configuration of your new Junos device. You want to be able to load this configuration at a later time. Which action enables you to perform this task?. Enter the request system reboot command. Enter the load factory-default command. Enter the request system configuration rescue save command. Enter the request system zeroize command.

Click the Exhibit button. Referring to the exhibit, which route(s) will be selected by Junos for packet forwarding?. The static route will be selected. The OSPF route will be selected. The Junos OS randomly selects one route. The Junos OS selects both routes.

You need to recover the root password on a Junos router without losing the current configuration settings. Which three statements describe what you should perform in this scenario? (Choose three.). Enter and commit the new root password. Load the factory-default configuration. Hit the space bar and enter recovery when prompted. Upgrade the Junos OS to the latest version. Use a console connection to reboot the device.

Click the Exhibit button. Referring the exhibit, what does the highlighted number indicate?. hop count is 5. cost is 5. metric is 5. route preference is 5.

Click the Exhibit button. Referring to the exhibit, OSPF has three export policies that match different static route prefixes. The 10.10.10.0/24 static route does not match any terms in the policy1 routing policy. What happens next in this scenario?. The static route is rejected by the default routing policy. The static route is rejected by the policy1 routing policy. The static route is evaluated by the policy2 routing policy. The static route is evaluated by the policy3 routing policy.

After the factory default configuration is loaded, which configuration object must be created prior to the first commit?. root authentication. loopback IP address. host name. out-of-band connectivity.

Which two statements are correct about Junos traceoptions? (Choose two.). Traceoption output, by default, is stored in /var/log/<file-name>. Traceoptions cannot be enabled in a production environment. Traceoptions are enabled by default. Traceoptions are enabled through configuration.

Which statement is correct when multiple users are configuring a Junos device using the configure private command?. A commit by any user will commit changes made by all active users. Each user gets their own candidate configuration. A commit will not succeed until there is only a single user in configuration mode. Each user shares the same candidate configuration.

Your network infrastructure transports data, voice, and video traffic. Users are complaining that voice and video calls are not performing to their expectations. In this scenario, which technology would you implement to improve voice and video performance on your network?. NAT. IPv6. CoS. STP.

Which component is considered part of the data plane?. the Packet Forwarding Engine. the fan tray. the power supply. he Routing Engine.

Which two actions happen when multiple users issue the configure exclusive command to enter configuration mode on a Junos device? (Choose two.). Other users can enter configuration mode. The candidate configuration is locked. Other users cannot enter configuration mode. The candidate configuration is unlocked.

Which criteria does the Junos OS use to select an active route when two entries exist in the routing table?. the route with the lowest preference number. the most recently learned dynamic route. the route with the highest preference number. the route with the highest metric.

How many rescue configuration files are supported on a Junos device?. 3. 1. 50. 49.

Which two statements are true about the candidate configuration? (Choose two.). You can discard changes before committing them. You can deploy multiple changes at the same time. Multiple users cannot modify the same candidate configuration. Candidate configuration changes are automatically applied.

You have logged on to a Junos device and are at the operational mode prompt. Which two commands are used at this prompt? (Choose two.). show interface ge-0/0/0. request system shutdown. set interface ge-0/0/0 unit 0 family inet. run show interface terse.

Which Junos feature limits the amount of exception traffic that is sent from the PFE to the RE?. policer. CoS markings. routing policy. scheduler.

You are logged in to a Junos OS device with SSH and issued the show protocols | compare command in the configuration, but no output is shown. Which statement is correct in this scenario?. You must commit the configuration before any output will be shown. There are no changes to the candidate configuration. The command only works for interface configuration differences. Someone accidentally deleted the active configuration.

You received a new Junos device and are configuring the system-related settings. You must configure this device for the current date and time on the US West coast. You have set the time zone to America/Los_Angeles, however the time and date did not change. In this scenario, which two additional actions would satisfy this requirement? (Choose two.). Configure an NTP server. Set the date and time setting manually. Reboot the device. Configure a DNS server.

Which two statements are true about the PFE? (Choose two.). The PFE handles all processes that control the chassis components. The PFE is responsible for performing protocol updates and system management. The PFE uses Layer 2 and Layer 3 forwarding tables to forward traffic toward its destination. The PFE implements various services such as policing, stateless firewall filtering, and class of service.

What will the request system configuration rescue save command do?. It saves the candidate configuration as the rescue configuration. It saves the most recently committed configuration as the rescue configuration. It saves a configuration version prior to the configuration most recently committed as the rescue configuration. It activates the rescue configuration.

Which two statements are correct about MAC addresses? (Choose two.). Switches use the Address Resolution Protocol table to assign MAC addresses to network interface cards in the forwarding frame. Switches use the destination MAC address to identify the next-hop destination and to change the destination MAC address in the frame. The source and destination MAC addresses always remains static to the final destination. The MAC address identifies the physical hardware.

What are two benefits when implementing class of service? (Choose two.). Traffic congestion will be eliminated. Traffic congestion can be managed. The network will be faster. Latency-sensitive traffic can be prioritized.

Which two statements about firewall filters are correct? (Choose two.). Firewall filters can match Layer 7 parameters. Firewall filters are stateless. Firewall filters are stateful. Firewall filters can match Layer 4 parameters.

You are configuring a firewall filter on a Juniper device. In this scenario, what are two valid terminating actions? (Choose two.). count. discard. accept. next term.

What are two advantages of using the Junos OS? (Choose two.). It enables you to roll back to a previous configuration. It supports up to a maximum of two previous configurations. It pushes your configuration changes “live” immediately. It is modular.

You issue the monitor traffic interface ge-0/0/0 command. What will this command accomplish?. It displays a packet capture on interface ge-0/0/0. It displays the MTU and MAC address for ge-0/0/0. It displays real-time statistics for interface ge-0/0/0. It displays an operational summary of ge-0/0/0.

Which three benefits occur when operating an interior gateway protocol (IGP) in an autonomous system (AS)? (Choose three.). IGPs learn prefixes in the global Internet’s routing table. IGPs react very fast to network change. IGPs automatically distribute static routing information. IGPs determine the optimal paths for data transmission. IGPs learn everything about the subnets and best paths within your network.

Which process in the Junos OS is responsible for device management tasks including the CLI and commit operations?. mgd. chassisd. dcd. rpd.

Which command displays all IPv6 routes in the default routing instance?. show route table inet6.0. show route table inet.1. show route table inet.0. show route table inet6.1.

You are asked to view the real-time usage statistics for the busiest interfaces on a device running Junos OS. Which command will achieve this task?. show interfaces extensive. monitor interface traffic. monitor traffic absolute-sequence. monitor traffic.

What are two physical interface properties? (Choose two.). routing protocols. MTU. IP address. MAC address.

Which two components are included in a transport header? (Choose two.). source port number. source MAC address. destination MAC address. destination port number.

Click the Exhibit button. Referring to the exhibit, which routing configuration is required for these two users to access the remote server?. Users and the server require a default gateway. Trunk ports must be enabled on the switch. A routing protocol must be enabled on the router. Users must connect directly to the router.

Which two addresses are included in an Ethernet frame header? (Choose two.). destination MAC address. source IP address. destination IP address. source MAC address.

You are asked to convert the number 7 from decimal to binary. Which number is correct in this scenario?. 00010000. 11100000. 00000111. 00001000.

What are two attributes of the UDP protocol? (Choose two.). UDP is connectionless. UDP is best effort. UDP is more reliable than TCP. UDP is always slower than TCP.

Which command modifier would you use to see all possible completions for a specific command?. |. detail. ?. extensive.

You are asked to configure your device running Junos OS to automatically archive your configuration upon commit. In this scenario, which two methods are supported by the Junos OS? (Choose two.). SCP. RCP. FTP. HTTP.

What is a benefit of using J-Web?. It simultaneously manages multiple devices. It provides more advanced features than the CLI. It provides a customizable dashboard. It provides console-based management.

You are creating a new policy to accept and redistribute routes into you IGP. In this scenario, which match criteria would you use to identify the route prefixes to select?. neighbor. route-filter. instance. route-type.

What information would you find using the CLI help command?. message of the day. an explanation for specific system log error messages. hyperlinks for remediation actions. a URL for accessing the technical documentation.

You have configured some interfaces on a Junos device; however, you have not yet committed the configuration. What happens if you issue the rollback 0 command in this scenario?. The messages.log file is deleted. The interface changes you made are discarded. The factory default configuration is loaded. The Junos device is rebooted.

What is the maximum number of rollback configuration files that the Junos OS will store?. 25. 65. 50. 19.

Which two external authentication methods does Junos support for administrative access? (Choose two.). RADIUS. TACACS+. NIS. ACE.

What are two examples of exception traffic? (Choose two.). ping to the local device. log messages. transit packets. routing updates.

Which two statements are true about the Junos OS? (Choose two.). Routing tables are stored in the control plane. Routing tables are stored in the forwarding plane. Exception traffic is never sent to the control plane. Exception traffic is sent to the control plane.

Click the Exhibit button. You need to configure interface ge-0/1/2 with an IP address of 172.16.100.1/24. You have accidentally entered 172.16.101.1/24 as shown in the exhibit. Which command should you issue to solve the problem?. [edit] user@router# rollback rescue. [edit] user@router# rollback 1. [edit] user@router# rollback 0. [edit] user@router# rollback 2.

Which type of device uses the destination IP address to forward packets?. hub. repeater. Layer 2 switch. Layer 3 router.

You issue the telnet 10.10.10.1 source 192.168.100.1 command. Which two statements are correct in this scenario? (Choose two.). The telnet session will have a source address of 192.168.100.1. The telnet session will have a destination address of 10.10.10.1. The telnet session will have a destination address of 192.168.100.1. The telnet session will have a source address of 10.10.10.1.

Which two common routing policy actions affect the flow of policy evaluation? (Choose two.). next term. next hop. next policy. community.

Which two fields are you required to enter when you create a new user account? (Choose two.). login class. username. user ID. full name.

What are two functions of the Routing Engine? (Choose two.). It runs the Junos operating system. It processes transit traffic. It evaluates firewall filters for transit traffic. It processes all management traffic.

Which two functions are performed by the PFE? (Choose two.). It forwards transit traffic. It maintains the routing table. It selects active routes. It implements firewall filters.