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What Does a Cisco Certified Entry Network Technician (CCENT) Do?
Explanation of these topics include configuration, cabling, patching, troubleshooting and security. Reach out to the global world and expand your business by achieving your goal. Explanation of concepts such as IP addressing, subnets, default gateway and routing are part of this Cisco certification. Learn the latest Cisco certification with the help of Cisco 300-410 exam dumps. Reach out to the global world by filling in the knowledge gap in the IT industry.
NEW QUESTION # 104 
Refer to the exhibit After a misconfiguration by a junior engineer, the console access to router A is not working Which configuration allows access to router A?
A)
B)
C)
D)
- A. Option C
- B. Option B
- C. Option D
- D. Option A
Answer: A
NEW QUESTION # 105
Refer to the exhibit.
An engineer receives this error message when trying to access another router in-band from the serial interface connected to the console of R1. Which configuration is needed on R1 to resolve this issue?
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: A
Explanation:
https://community.cisco.com/t5/other-network-architecture/out-of-band-router-access/td-p/333295 The "transport output none" command prevents any protocol connection made from R1.
Therefore our SSH connection to 192.168.12.2 was refused. In order to fix this problem we can configure "transport output ssh" under "line console 0" of R1.
Note: The parameter "-l" specifies the username to log in as on the remote machine.
NEW QUESTION # 106
Refer to the exhibit.
A company is evaluating multiple network management system tools. Trending graphs generated by SNMP data are returned by the NMS and appear to have multiple gaps. While troubleshooting the issue, an engineer noticed the relevant output. What solves the gaps in the graphs?
- A. Remove the exceed-rate command in the class map.
- B. Configure the CIR rate to a lower value that accommodates all the NMS tools
- C. Separate the NMS class map in multiple class maps based on the specific protocols with appropriate CoPP actions
- D. Remove the class map NMS from being part of control plane policing.
Answer: C
Explanation:
Reference:
https://tools.cisco.com/security/center/resources/copp_best_practices
The class-map NMS in the exhibit did not classify traffic into specific protocols so many packets were dropped. We should create some class-map to classify the receiving traffic. It is also a recommendation of CoPP/CPP policy:
"Developing a CPP policy starts with the classification of the control plane traffic. To that end, the control plane traffic needs to be first identified and separated into different class maps."
NEW QUESTION # 107 
Refer to the exhibit. Your company's security policy requires you to allow telnet access using tcp port 3033 only.
You apply the configuration changes as shown and then test. Your telnet attempt fails. Which action would correct the issue?
- A. remove authorization exec ITCC from the VTY lines
- B. remove transport input telnet from the VTY lines
- C. add access-list 101 deny tcp any any eq 23 to the ACL
- D. add rotary 33 to the VTY lines
Answer: B
Explanation:
Explanation
NEW QUESTION # 108
Refer to the exhibit.
An IP SLA is configured to use the backup default route when the primary is down, but it is not working as desired. Which command fixes the issue?
- A. R1(config)# ip route 0.0.0.0.0.0.0.0.1.1.1.1 track 1
- B. R1(config)# ip route 0.0.0.0.0.0.0.0.2.2.2.2
- C. R1(config)# ip route 0.0.0.0.0.0.0.0.2.2.2.2 10 track 1
- D. R1(config)#ip sla track 1
Answer: A
NEW QUESTION # 109
Refer to the exhibit.
An engineer configured IP SLA to monitor a next hop on a router for reachability When the next hop is unreachable, the router is executing tracking and failing over another route, but packet loss is experienced because the reachability is flapping. Which action resolves the issue?
- A. Append delay up 0 down Ovto the track command
- B. Increase the frequency of the sla probe to 60.
- C. Append delay up SO down 60vto the track command
- D. Increase the timeout of the sla probe to 6000
Answer: C
Explanation:
IP SLA (Internet Protocol Service Level Agreement) is a feature that allows you to measure network performance such as latency, jitter, packet loss, and so on. In this case, it's being used to monitor the reachability of a next hop on a router123.
When the next hop is unreachable, the router is executing tracking and failing over to another route. However, packet loss is experienced because the reachability is flapping. This could be due to the router switching back and forth between the primary and backup routes too quickly.
To resolve this issue, you can introduce a delay in the tracking process. This can be done by appending a delay to the track command. Option C suggests appending a delay of 50 seconds for the up state and 60 seconds for the down state45. This means that the router will wait for 50 seconds before declaring the tracked object as up (reachable) and 60 seconds before declaring it as down (unreachable). This delay can help prevent the router from switching routes too quickly, thus reducing the chances of reachability flapping and packet loss45.
References:
Configure ISP Failover with Default Routes Using IP SLA Tracking - Cisco Using IPSLA to change routing - Cisco Community How to Use IP SLA Technology to Assess WAN Performance Reliable Static Routing with IP SLA - NetworkLessons.com Configuring Static Route Tracking using IP SLA (Basic)
NEW QUESTION # 110
Refer to the exhibit.
Which interface configuration must be configured on the HUB router to enable MVPN with mGRE mode?
- A. Option C
- B. Option B
- C. Option D
- D. Option A
Answer: A
Explanation:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_dmvpn/configuration/15-mt/sec-conn-dmvpn-15-mt-book/sec-conn-dmvpn-dmvpn.html
NEW QUESTION # 111
What are two characteristics of VRF instance? (Choose two.)
- A. Each VRF has a different set of routing and CEF tables
- B. An interface must be associated to one VRF.
- C. All VRFs share customers routing and CEF tables .
- D. It is defined by the VPN membership of a customer site attached to a P device.
- E. A customer site can be associated to different VRFs
Answer: A,B
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_l3_vpns/configuration/15-s/mp-l3-vpns-15-s-book/mp-bgp-mpls-vpn.pdf
NEW QUESTION # 112
Refer to the exhibit.
Refer to the exhibit. The OSPF neighbor relationship is not coming up What must be configured to restore OSPF neighbor adjacency?
- A. matching MTU values
- B. OSPF on the remote router
- C. matching hello timers
- D. use router ID
Answer: A
NEW QUESTION # 113
Refer to the exhibit.
A company with autonomous system number AS65401 has obtained IP address block 209.165.200.224/27 fro, ARIN. The company needed more IP addresses and was assigned block 209.165.202.128/27 from ISP2. An engineer is ISP1 reports they are receiving ISP2 routes from AS65401. Which configuration onR1 resolves the issue?
A)
B)
C)
D)
- A. Option B
- B. Option D
- C. Option C
- D. Option A
Answer: D
Explanation:
Explanation
https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/23675-27.html
NEW QUESTION # 114
An engineer needs dynamic routing between two routers and is unable to establish OSPF adjacency. The output of the show ip ospf neighbor command shows that the neighbor state is EXSTART/EXCHANGE. Which action should be taken to resolve this issue?
- A. match the MTUs
- B. match the passwords
- C. match the hello timers
- D. match the network types
Answer: A
Explanation:
NEW QUESTION # 115
Drag and drop the operations from the left onto the locations where the operations are performed on the right.
Answer:
Explanation:
NEW QUESTION # 116
Drag and drop the operations from the left onto the locations where the operations are performed on the right.
Answer:
Explanation:
NEW QUESTION # 117
Refer to the exhibit.
Refer to the exhibit. An administrator must harden a router, but the administrator failed to test the SSH access successfully to the router. Which action resolves the issue?
- A. SSH syntax must be ssh -I user ip to log in to the remote device
- B. SSH must be allowed with the transport output ssh command
- C. Configure enable secret to log in to the device
- D. Configure SSH on the remote device to log m using SSH
Answer: A
NEW QUESTION # 118
Refer to the exhibit.
An engineer is trying to generate a summary route in OSPF for network 10.0.0.0/8, but the summary route does not show up in the routing table. Why is the summary route missing?
- A. The summary-address command is used only for summarizing prefixes between areas.
- B. There is no route for a subnet inside 10.0.0.0/8, so the summary route is not generated.
- C. The summary route is visible only in the OSPF database, not in the routing table.
- D. The summary route is not visible on this router, but it is visible on other OSPF routers in the same area.
Answer: B
Explanation:
Explanation
The summary-address is only used to create aggregate addresses for OSPF at an autonomous system boundary.
It means this command should only be used on the ASBR when you are trying to summarize externally redistributed routes from another protocol domain or you have a NSSA area. But a requirement to create a summarized route is:
The ASBR compares the summary route's range of addresses with all routes redistributed into OSPF on that ASBR to find any subordinate subnets (subnets that sit inside the summary route range). If at least one subordinate subnet exists, the ASBR advertises the summary route.
NEW QUESTION # 119
Refer to the exhibit.
An engineer is trying to generate a summary route in OSPF for network 10.0.0.0/8, but the summary route does not show up in the routing table. Why is the summary route missing?
- A. The summary-address command is used only for summarizing prefixes between areas.
- B. There is no route for a subnet inside 10.0.0.0/8, so the summary route is not generated.
- C. The summary route is visible only in the OSPF database, not in the routing table.
- D. The summary route is not visible on this router, but it is visible on other OSPF routers in the same area.
Answer: B
Explanation:
Explanation
The summary-address is only used to create aggregate addresses for OSPF at an autonomous system boundary.
It means this command should only be used on the ASBR when you are trying to summarize externally redistributed routes from another protocol domain or you have a NSSA area. But a requirement to create a summarized route is:
The ASBR compares the summary route's range of addresses with all routes redistributed into OSPF on that ASBR to find any subordinate subnets (subnets that sit inside the summary route range). If at least one subordinate subnet exists, the ASBR advertises the summary route.
NEW QUESTION # 120
Refer to the exhibit.
Refer to the exhibit A network engineer received a call from the vendor for a failed attempt to remotely log in to their managed rooter loopback interface from 192 168.40 15 Which action must the network engineer take to resolve the issue?
- A. The source IP summarization must be updated to include the vendor source IP address
- B. The IP access list VENDOR must be applied to interface loopback 100
- C. The time-range configuration must be changed to use absolute instead of periodic
- D. The EIGRP configuration must be updated to include a network statement for loopback 100
Answer: D
NEW QUESTION # 121
Drag and drop the OSPF adjacency states from the left onto the correct descriptions on the right.
Answer:
Explanation:
Explanation
Down
This is the first OSPF neighbor state. It means that no information (hellos) has been received from this neighbor, but hello packets can still be sent to the neighbor in this state.
During the fully adjacent neighbor state, if a router doesn't receive hello packet from a neighbor within the Router Dead Interval time (RouterDeadInterval = 4*HelloInterval by default) or if the manually configured neighbor is being removed from the configuration, then the neighbor state changes from Full to Down.
Attempt
This state is only valid for manually configured neighbors in an NBMA environment. In Attempt state, the router sends unicast hello packets every poll interval to the neighbor, from which hellos have not been received within the dead interval.
Init
This state specifies that the router has received a hello packet from its neighbor, but the receiving router's ID was not included in the hello packet. When a router receives a hello packet from a neighbor, it should list the sender's router ID in its hello packet as an acknowledgment that it received a valid hello packet.
2-Way
This state designates that bi-directional communication has been established between two routers.
Bi-directional means that each router has seen the other's hello packet. This state is attained when the router receiving the hello packet sees its own Router ID within the received hello packet's neighbor field. At this state, a router decides whether to become adjacent with this neighbor. On broadcast media and non-broadcast multiaccess networks, a router becomes full only with the designated router (DR) and the backup designated router (BDR); it stays in the 2-way state with all other neighbors. On Point-to-point and Point-to-multipoint networks, a router becomes full with all connected routers.
At the end of this stage, the DR and BDR for broadcast and non-broadcast multiacess networks are elected.
For more information on the DR election process, refer to DR Election.
Note: Receiving a Database Descriptor (DBD) packet from a neighbor in the init state will also a cause a transition to 2-way state.
Exstart
Once the DR and BDR are elected, the actual process of exchanging link state information can start between the routers and their DR and BDR. (ie. Shared or NBMA networks).
In this state, the routers and their DR and BDR establish a master-slave relationship and choose the initial sequence number for adjacency formation. The router with the higher router ID becomes the master and starts the exchange, and as such, is the only router that can increment the sequence number. Note that one would logically conclude that the DR/BDR with the highest router ID will become the master during this process of master-slave relation. Remember that the DR/BDR election might be purely by virtue of a higher priority configured on the router instead of highest router ID. Thus, it is possible that a DR plays the role of slave. And also note that master/slave election is on a per-neighbor basis.
Exchange
In the exchange state, OSPF routers exchange database descriptor (DBD) packets. Database descriptors contain link-state advertisement (LSA) headers only and describe the contents of the entire link-state database.
Each DBD packet has a sequence number which can be incremented only by master which is explicitly acknowledged by slave. Routers also send link-state request packets and link-state update packets (which contain the entire LSA) in this state. The contents of the DBD received are compared to the information contained in the routers link-state database to check if new or more current link-state information is available with the neighbor.
Loading
In this state, the actual exchange of link state information occurs. Based on the information provided by the DBDs, routers send link-state request packets. The neighbor then provides the requested link-state information in link-state update packets. During the adjacency, if a router receives an outdated or missing LSA, it requests that LSA by sending a link-state request packet. All link-state update packets are acknowledged.
Full
In this state, routers are fully adjacent with each other. All the router and network LSAs are exchanged and the routers' databases are fully synchronized.
Full is the normal state for an OSPF router. If a router is stuck in another state, it is an indication that there are problems in forming adjacencies. The only exception to this is the 2-way state, which is normal in a broadcast network. Routers achieve the FULL state with their DR and BDR in NBMA/broadcast media and FULL state with every neighbor in the remaining media such as point-to-point and point-to-multipoint.
Note: The DR and BDR that achieve FULL state with every router on the segment will display FULL/DROTHER when you enter the show ip ospf neighbor command on either a DR or BDR. This simply means that the neighbor is not a DR or BDR, but since the router on which the command was entered is either a DR or BDR, this shows the neighbor as FULL/DROTHER.
NEW QUESTION # 122
Refer to the exhibit.
An administrator is configuring a GRE tunnel to establish an EIGRP neighbor to a remote router. The other tunnel endpoint is already configured. After applying the configuration as shown, the tunnel started flapping.
Which action resolves the issue?
- A. Advertise the Loopback0 interface from R2 across the tunnel.
- B. Readdress the IP network on the Tunne10 on both routers using the /31 netmask.
- C. Stop sending a route matching the tunnel destination across the tunnel.
- D. Modify the network command to use the Tunne10 Interface netmask.
Answer: C
NEW QUESTION # 123
Drag and drop the packet types from the left onto the correct descriptions on the right.
Answer:
Explanation:
Explanation
Unlike legacy network technologies such as ISDN, Frame Relay, and ATM that defined separate data and control channels, IP carries all packets within a single pipe. Thus, IP network devices such as routers and switches must be able to distinguish between data plane, control plane, and management plane packets to treat each packet appropriately.From an IP traffic plane perspective, packets may be divided into four distinct, logical groups:1. Data plane packets - End-station, user-generated packets that are always forwarded by network devices to other end-station devices. From the perspective of the network device, data plane packets always have a transit destination IP address and can be handled by normal, destination IP address-based forwarding processes.2. Control plane packets - Network device generated or received packets that are used for the creation and operation of the network itself. From the perspective of the network device, control plane packets always have a receive destination IP address and are handled by the CPU in the network device route processor. Examples include protocols such as ARP, BGP, OSPF, and other protocols that glue the network together.3. Management plane packets - Network device generated or received packets, or management station generated or received packets that are used to manage the network. From the perspective of the network device, management plane packets always have a receive destination IP address and are handled by the CPU in the network device route processor. Examples include protocols such as Telnet, Secure Shell (SSH), TFTP, SNMP, FTP, NTP, and other protocols used to manage the device and/or network.4. Services plane packets - A special case of data plane packets, services plane packets are also user-generated packets that are also forwarded by network devices to other end-station devices, but that require high-touch handling by the network device (above and beyond normal, destination IP address-based forwarding) to forward the packet. Examples of high-touch handling include such functions as GRE encapsulation, QoS, MPLS VPNs, and SSL/IPsec encryption/decryption, etc. From the perspective of the network device, services plane packets may have a transit destination IP address, or may have a receive destination IP address (for example, in the case of a VPN tunnel endpoint).
NEW QUESTION # 124
The network administrator is tasked to configure R1 to authenticate telnet connections based on Cisco ISE using RADIUS. ISE has been configured with an IP address of 192.168.1.5 and with a network device pointing towards R1 (192.168.1.1) with a shared secret password of Cisco123. If ISE is down, the administrator should be able to connect using the local database with a username and password combination of admin/cisco123.
The administrator has configured the following on R1:
aaa new-model
!
username admin password cisco123
!
radius server ISE1
address ipv4 192.168.1.5
key Cisco123
!
aaa group server tacacs+ RAD-SERV
server name ISE1
!
aaa authentication login RAD-LOCAL group RAD-SERV
ISE has gone down. The Network Administrator is not able to Telnet to R1 when ISE went down.
Which two configuration changes will fix the issue? (Choose two.)
- A. aaa authentication login RAD-LOCAL group RAD-SERV local
- B. line vty 0 4
login authentication RAD-LOCAL - C. aaa authentication login RAD-SERV group RAD-LOCAL local
- D. line vty 0 4
login authentication RAD-SERV - E. line vty 0 4
login authentication default
Answer: A,B
NEW QUESTION # 125
......
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