Go to JN0-105 Questions - Try JN0-105 dumps pdf
Dumps Practice Exam Questions Study Guide for the JN0-105 Exam
Juniper JN0-105 Exam Syllabus Topics:
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
|
| Topic 3 |
|
| Topic 4 |
|
NEW QUESTION # 41
Which two common routing policy actions affect the flow of policy evaluation? (Choose two.)
- A. next hop
- B. community
- C. next policy
- D. next term
Answer: C,D
Explanation:
In Junos OS routing policy evaluation, "next policy" (A) and "next term" (C) are common actions that affect the flow of policy evaluation. "Next policy" directs the evaluation to the next policy in the sequence, whereas "next term" moves the evaluation to the next term within the current policy, allowing for granular control over routing decisions.
NEW QUESTION # 42
Exhibit
user@router> show route 192.168.100.2
inet.O: 15 destinations, 17 routes (15 active, 0 holddown, 0 hidden) Limit/Threshold: 1048576/1048576 destinations
+ = Active Route, - = Last Active, * = Both 192.168.100.2/32*[OSPF/IO] 00:14:29, metric 1
> to 172.16.1.6 via ge-0/0/1.0 [BGP/170] 00:06:49, localpref 100
AS path: 65102 I, validation-state: unverified > to 172.16.1.6 via ge-0/0/1.0 Referring to the exhibit, which statement is correct?
- A. / Traffic is load-balanced across two routes.
- B. The BGP route is preferred over the OSPF route.
- C. The BGP path is the only active route.
- D. The OSPF path is the only active route.
Answer: D
Explanation:
Referring to the exhibit, the presence of the "+" symbol next to the OSPF route for 192.168.100.2/32 indicates that this is the active route being used to forward traffic. The BGP route, although present, does not have the
"+" symbol, indicating it is not the active route. In Junos OS, the routing table displays the active route with a
"+" symbol, and the fact that the OSPF route has this symbol means it is the preferred path based on the routing protocol'sdecision process, which takes into account factors such as route preference (administrative distance) and metrics.
NEW QUESTION # 43
What are two attributes of the UDP protocol? (Choose two.)
- A. UDP is connectionless.
- B. UDP is always slower than TCP.
- C. UDP is best effort.
- D. UDP is more reliable than TCP.
Answer: A,C
Explanation:
UDP (User Datagram Protocol) is known for being connectionless (D) and providing best-effort delivery without the reliability mechanisms present in TCP (C). This means that UDP does notestablish a connection before sending data and does not guarantee delivery, order, or error checking, making it faster but less reliable than TCP.
NEW QUESTION # 44
Which command displays all IPv6 routes in the default routing instance?
- A. showroute table inet.0
- B. showroute table inet6.1
- C. showroute table inet.l
- D. showroute table inet6.0
Answer: D
Explanation:
In Junos OS, the command to display IPv6 routes in the default routing instance isshow route table inet6.0.
The routing tableinet6.0specifically holds IPv6 routes. The commandshow route table inet.0is used for IPv4 routes, andinet6.1orinet.l(assuminginet.lis a typo forinet.1) are not standard Junos routing tables for displaying IPv6 routes in the default routing instance.
NEW QUESTION # 45
Which protocol is responsible for learning an IPv4 neighbor's MAC address?
- A. Address Resolution Protocol (ARP)
- B. Media Access Control Security (MACsec)
- C. Neighbor Discovery Protocol (NDP)
- D. Network Address Translation (NAT)
Answer: A
Explanation:
The Address Resolution Protocol (ARP) is a fundamental protocol used in IPv4 networking to map an IP address to its corresponding MAC (Media Access Control) address. When an IPv4 device wants to communicate with another device on the same local network, it uses ARP to find out the MAC address associated with the target device's IP address. This ensures that IP packets can be encapsulated into Ethernet frames and delivered to the correct hardware address on the local network segment. ARP does not apply to IPv6, where Neighbor Discovery Protocol (NDP) performs a similar function.
NEW QUESTION # 46
Click the Exhibit button.
Referring to the exhibit, what should be configured on R1 to advertise a default static route into OSPF?
- A. a routing policy
- B. a firewall filter
- C. a loopback interface
- D. a management interface
Answer: A
Explanation:
To advertise a default static route into OSPF on router R1, a routing policy should be configured. This policy would typically include a statement to match the default route (0.0.0.0/0) and then apply an action to set the route as an OSPF external type, which would then be redistributed into the OSPF domain. The routing policy is a set of conditions and actions that determine how routes are imported into or exported from the routing table and how routes are shared between routing instances or routing protocols. After defining the policy, it must be applied to OSPF under the export section of the OSPF configuration on R1. This process will allow R1 to announce the default route to other OSPF routers in the network, which then can use it as a gateway of last resort to reach the Internet or other networks not explicitly known to the OSPF domain.
NEW QUESTION # 47
After the factory default configuration is loaded, which configuration object must be created prior to the first commit?
- A. root authentication
- B. host name
- C. out-of-band connectivity
- D. loopback IP address
Answer: A
Explanation:
In Juniper Networks devices, when the factory default configuration is loaded, the first step before committing any configuration is to set up root authentication. This is crucial because it secures the device by ensuring that only authorized users have administrative access. Without setting up a root password, the device will not allow any commit operations, which is a safety measure to prevent unauthorized access. This requirement emphasizes the importance Juniper places on security right from the initial setup of the device.
NEW QUESTION # 48
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. a static route
- B. a dynamic route
- C. a direct route
- D. a local route
Answer: C,D
Explanation:
When an interface on a router is configured with an IPv4 address and is in an up state, two types of routes are automatically created in the routing table: a local route and a direct route, making B and D the correct answers.
The local route represents the interface's IP address itself, indicating that the router can directly receive packets addressed to this IP. The direct route represents the subnet or network segment to which the interface is connected, indicating that the router can directly forward packets to destinations within this subnet.
NEW QUESTION # 49
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.)
- A. set interface ge-0/0/0 unit 0 family inet
- B. run show interface terse
- C. show interface ge-0/0/0
- D. request system shutdown
Answer: C
Explanation:
At the operational mode prompt on a Junos device, you can use various commands to view the device's status and request system operations. Theshow interface ge-0/0/0command is used to display information about a specific interface, while therequest system shutdowncommand is used to properly shut down the device. The setcommand is used in configuration mode, not operational mode, and theruncommand is used to execute operational mode commands from configuration mode.
NEW QUESTION # 50
Which two fields are you required to enter when you create a new user account? (Choose two.)
- A. login class
- B. full name
- C. user ID
- D. username
Answer: A,D
Explanation:
In Junos OS, when creating a new user account, the minimum required fields are theusernameand thelogin class. The username is the identifier for the account, while the login class specifies the level of access or permissions the user has on the device. Login classes allow for the differentiation between various roles, such as read-only access or full administrative rights. Other information, such as full name or user ID, is optional and not strictly necessary for the creation of a functional user account.
NEW QUESTION # 51
You issue the telnet 10.10.10.1 source 192.168.100.1 command.
Which two statements are correct in this scenario? (Choose two.)
- A. The telnet session will have a destination address of 192.168.100.1.
- B. The telnet session will have a source address of 10.10.10.1.
- C. The telnet session will have a source address of 192.168.100.1.
- D. The telnet session will have a destination address of 10.10.10.1.
Answer: C,D
Explanation:
In the given telnet command, "telnet 10.10.10.1 source 192.168.100.1," the destination address of the telnet session is 10.10.10.1, and the source address of the session is specified as 192.168.100.1, making C and D the correct answers. This command instructs the telnet client to use the specified source IP address when establishing the connection to the destination.
NEW QUESTION # 52
Which two statements are true about the PFE? (Choose two.)
- A. The PFE implements various services such as policing, stateless firewall filtering, and class of service.
- B. The PFE is responsible for performing protocol updates and system management.
- C. The PFE uses Layer 2 and Layer 3 forwarding tables to forward traffic toward its destination.
- D. The PFE handles all processes that control the chassis components.
Answer: A,C
Explanation:
The Packet Forwarding Engine (PFE) in Juniper Networks devices is the heart of the data plane, handling the actual forwarding of packets based on pre-computed forwarding tables. It provides several critical services to manage and control traffic flow, including policing (to enforce bandwidth limits for certain traffic types), stateless firewall filtering (to permit or deny traffic based on predefined criteria), and Class of Service (CoS) (to prioritize traffic to ensure quality of service for critical applications). The PFE utilizes both Layer 2 (MAC addresses) and Layer 3 (IP addresses) forwarding tables to make intelligent forwarding decisions, ensuring that packets are efficiently routed toward their final destination.
NEW QUESTION # 53
Which three benefits occur when operating an interior gateway protocol (IGP) in an autonomous system (AS)? (Choose three.)
- A. IGPs learn everything about the subnets and best paths within your network.
- B. IGPs learn prefixes in the global Internet's routing table.
- C. IGPs automatically distribute static routing information.
- D. IGPs determine the optimal paths for data transmission.
- E. IGPs react very fast to network change.
Answer: A,D,E
Explanation:
Operating an Interior Gateway Protocol (IGP) within an Autonomous System (AS) provides several benefits, including determining the optimal paths for data transmission (B), reacting quickly to network changes (D), and learning all about the subnets and best paths within the network (E). IGPs are designed to manage routing within a single AS efficiently, adapting to changes and ensuring data is routed through the best available paths.
NEW QUESTION # 54
You are asked to convert the number 7 from decimal to binary.
Which number is correct in this scenario?
- A. 00001000
- B. 00000111
- C. 0
- D. 00010000
Answer: B
Explanation:
To convert the decimal number 7 to binary, the correct representation is 00000111 (C). In binary, 7 is represented as 1+2+4 (2^0 + 2^1 + 2^2), which corresponds to the last three digits being 1 in the binary format, with leading zeros added for clarity.
NEW QUESTION # 55
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?
- A. monitor traffic interface ge-0/0/0
- B. show interfaces ge-0/0/0 terse
- C. show interfaces ge-0/0/0
- D. monitor interface ge-0/0/0
Answer: C
Explanation:
After increasing the MTU size of an interface and committing the configuration, the command to verify the applied MTU change is D, "show interfaces ge-0/0/0." This command displays detailed information about the interface, including the current MTU size, making it the best choice for verifying the applied changes.
NEW QUESTION # 56
Click the Exhibit button.
Referring to the exhibit, what is the source IP address of the ping that was executed?
- A. 10.23.0.2
- B. 10.12.0.2
- C. 10.23.0.3
- D. 10.24.0.4
Answer: A
Explanation:
The exhibit shows a ping test being executed from router R2 to the IP address 10.23.0.3. Since the ping command is issued on R2 and we see successful replies from 10.23.0.3, it means the source of the ping must be an interface on R2. Given the network diagram and the IP address scheme, the source IP address of the ping is on the interface ge-0/0/2 of R2, which is in the subnet 10.23.0.0/24. The only logical IP address for R2's interface in this subnet, based on standard networking practices and the given options, would be 10.23.0.2. The other addresses provided in the options belong to different subnets or are the destination of the ping itself.
NEW QUESTION # 57
You configured your system authentication order using the set authentication-order tacplus radius password command.
Which statement is correct in this scenario?
- A. The password authentication method is evaluated if the TACACS+ and RADIUS servers respond with a reject message.
- B. The password authentication will only be used if the TACACS+ and RADIUS servers fail to respond.
- C. A rejection by TACACS+ will prevent a login and bypass the other two authentication methods.
- D. All authentication methods are used with the most restrictive permission set used.
Answer: B
Explanation:
In the scenario where the system authentication order is set to "tacplus radius password," the correct statement is (B). If the TACACS+ and RADIUS servers are unreachable or fail to respond, the system will fall back to using password authentication. This ensures that users can still authenticate using locally stored passwords if external authentication servers are unavailable.
NEW QUESTION # 58
Which protocol would you configure to synchronize the time and date on a Junos device?
- A. RIP
- B. SNMP
- C. NTP
- D. NMP
Answer: C
Explanation:
The Network Time Protocol (NTP) is designed to synchronize the clocks of computers over a network. Configuring NTP on a Junos device ensures that its clock is set accurately, which is crucial for logging, troubleshooting, and maintaining the integrity of time-sensitive operations and security protocols. NTP allows devices to use a hierarchy of time sources, from primary servers synchronized to a reference clock (such as an atomic clock or GPS time) to secondary servers that distribute the time to other devices on the network.
NEW QUESTION # 59
What are two link-state routing protocols? (Choose two.)
- A. OSPF
- B. RIP
- C. IS-IS
- D. BGP
Answer: A,C
Explanation:
Link-state routing protocols are a type of routing protocol used in packet-switching networks for finding the best path between source and destination. OSPF (Open Shortest Path First) and IS-IS (Intermediate System to Intermediate System) are both examples of link-state routing protocols. They work by maintaining a complete map or topology of the network, allowing routers to independently calculate the best path to each destination.
Unlike distance-vector protocols like RIP, link-state protocols are more efficient and scalable, making them suitable for larger networks.
NEW QUESTION # 60
Which statement is correct concerning exception traffic processing?
- A. Exception traffic is never forwarded.
- B. Exception traffic is rate-limited to protect the RE.
- C. Exception traffic is always dropped during congestion.
- D. Exception traffic is discarded by the PFE.
Answer: B
Explanation:
Exception traffic refers to packets that the Packet Forwarding Engine (PFE) cannot process normally and must be forwarded to the Routing Engine (RE) for further processing. This includes packets destined for the router itself or packets needing special handling that the PFE cannot provide. To protect the RE from being overwhelmed by such traffic, which could potentially impact the router's control plane functions, exception traffic is rate-limited. This means that there's a threshold to how much exception traffic can be sent to the RE, ensuring that the router's critical management and control functions remain stable and responsive even during high traffic volumes or attacks.
NEW QUESTION # 61
Which two statements are correct about a Routing Engine? (Choose two.)
- A. It processes CoS marked traffic.
- B. It processes management traffic.
- C. It maintains routing tables.
- D. It forwards transit traffic.
Answer: B,C
Explanation:
The Routing Engine (RE) in Juniper Networks devices plays a pivotal role in the control plane, handling tasks that are critical for the operation and management of the network. One of its key functions is processing management traffic, which includes user commands, system configuration, and monitoring operations. The RE also maintains routing tables, which are essential for network routing decisions. These tables contain network topology information and routing paths, which the RE uses to update the Packet Forwarding Engine (PFE) so that it can forward packets appropriately. The RE does not forward transit traffic or process Class of Service (CoS) marked traffic, as these tasks are handled by the PFE.
NEW QUESTION # 62
......
Free JNCIA JN0-105 Exam Question: https://www.actual4labs.com/Juniper/JN0-105-actual-exam-dumps.html
JN0-105 Dumps with Practice Exam Questions Answers: https://drive.google.com/open?id=1c9q456Pfyerbin_kiWcpWnahgzb4nGUt