Routing and Switching Essentials Version 6 – RSE 6.0 Chapter 6 Exam

Routing and Switching Essentials (Version 6.00) – RSE 6.0 Chapter 6 Exam

QUESTION 1

Syslog was configured with a level 3 trap. Which 4 types of logs would be generated (choose four)

A.Emergencies
B.Alerts
C.Critical
D.Errors
E.Warnings

Correct Answer: ABCD
Section: (none)
Explanation

Explanation/Reference:
Explanation:
The Message Logging is divided into 8 levels as listed below:
Level Keyword Description
0 emergencies System is unusable
1 alerts Immediate action is needed
2 critical Critical conditions exist
3 errors Error conditions exist
4 warnings Warning conditions exist
5 notification Normal, but significant, conditions exist 6 informational Informational messages 7 debugging
Debugging messages
The highest level is level 0 (emergencies). The lowest level is level 7. If you specify a level with the “logging
console level” command, that level and all the higher levels will be displayed. For example, by using the “logging console warnings” command, all the logging
of emergencies, alerts, critical, errors, warnings will be displayed.

QUESTION 2

What are the benefit of using Netflow? (Choose three.)

A.Network, Application & User Monitoring
B.Network Planning
C.Security Analysis
D.Accounting/Billing

Correct Answer: ACD
Section: (none)
Explanation

Explanation/Reference:

QUESTION 3

Which protocol can cause overload on a CPU of a managed device?

A.Netflow
B.WCCP
C.IP SLA
D.SNMP

Correct Answer: D
Section: (none)
Explanation

Explanation/Reference:
Explanation:
Sometimes, messages like this might appear in the router console:
%SNMP-3-CPUHOG: Processing [chars] of [chars]
They mean that the SNMP agent on the device has taken too much time to process a request. You can
determine the cause of high CPU use in a router by using the output of the show process cpu command.
Note: A managed device is a part of the network that requires some form of monitoring and management
(routers, switches, servers, workstations, printers…).

QUESTION 4

What are the three things that the Netflow uses to consider the traffic to be in a same flow?

A.IP address
B.Interface name
C.Port numbers
D.L3 protocol type
E.MAC address

Correct Answer: ACD
Section: (none)
Explanation

Explanation/Reference:
Explanation:
What is an IP Flow?
Each packet that is forwarded within a router or switch is examined for a set of IP packet attributes. These
attributes are the IP packet identity or fingerprint of the packet and determine if the packet is unique or
similar to other packets. Traditionally, an IP Flow is based on a set of 5 and up to 7 IP packet attributes.
IP Packet attributes used by NetFlow:
+ IP source address
+ IP destination address
+ Source port
+ Destination port
+ Layer 3 protocol type
+ Class of Service
+ Router or switch interface

QUESTION 5

What is the alert message generated by SNMP agents called ?

A.TRAP
B.INFORM
C.GET
D.SET

Correct Answer: AB
Section: (none)
Explanation

Explanation/Reference:
Explanation:
A TRAP is a SNMP message sent from one application to another (which is typically on a remote host).
Their purpose is merely to notify the other application that something has happened, has been noticed, etc.
The big problem with TRAPs is that they’re unacknowledged so you don’t actually know if the remote
application received your oh-so-important message to it. SNMPv2 PDUs fixed this by introducing the notion
of an INFORM, which is nothing more than an acknowledged TRAP.

QUESTION 6

Which three features are added in SNMPv3 over SNMPv2?

A.Message Integrity
B.Compression
C.Authentication
D.Encryption
E.Error Detection

Correct Answer: ACD
Section: (none)
Explanation

Explanation/Reference:

QUESTION 7

In a GLBP network, who is responsible for the arp request?

A.AVF
B.AVG
C.Active Router
D.Standby Router

Correct Answer: B
Section: (none)
Explanation

Explanation/Reference:

QUESTION 8

What levels will be trapped if the administrator executes the command router(config)# logging trap 4 (Choose four) ?

A.Emergency
B.Notice
C.Alert
D.Error
E.Warning

Correct Answer: ACDE
Section: (none)
Explanation

Explanation/Reference:
Explanation:
The Message Logging is divided into 8 levels as listed below:
Level Keyword Description
0 emergencies System is unusable
1 alerts Immediate action is needed
2 critical Critical conditions exist
3 errors Error conditions exist
4 warnings Warning conditions exist
5 notification Normal, but significant, conditions exist 6 informational Informational messages 7 debugging
Debugging messages
If you specify a level with the “logging trap level” command, that level and all the higher levels will be
logged.
For example, by using the “logging trap 4 command, all the logging of emergencies, alerts, critical, errors,
warnings will be logged.

QUESTION 9

Hotspot Question
Refer to the topology. Your company has decided to connect the main office with three other remote branch
offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main
office and the routers located in the remote branch offices.

An OSPF neighbor adjacency is not formed between R3 in the main office and R4 in the Branchl office.
What is causing the problem?

A.There is an area ID mismatch.
B.There is a Layer 2 issue; an encapsulation mismatch on serial links.
C.There is an OSPF hello and dead interval mismatch.
D.The R3 router ID is configured on R4.

Correct Answer: A
Section: (none)
Explanation

Explanation/Reference:
Explanation:
A show running-config command on R3 and R4 shows that R4 is incorrectly configured for area 2:

QUESTION 10

Hotspot Question
Refer to the topology. Your company has decided to connect the main office with three other remote branch
offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and
the routers located in the remote branch offices.

An OSPF neighbor adjacency is not formed between R3 in the main office and R5 in the Branch2 office. What is causing the problem?

A.There is an area ID mismatch.
B.There is a PPP authentication issue; a password mismatch.
C.There is an OSPF hello and dead interval mismatch.
D.There is a missing network command in the OSPF process on R5.

Correct Answer: C
Section: (none)
Explanation

Explanation/Reference:
Explanation:
The “show ip ospf interface command on R3 and R5 shows that the hello and dead intervals do not match.
They are 50 and 200 on R3 and 10 and 40 on R5.

QUESTION 11

Hotspot Question
Refer to the topology. Your company has decided to connect the main office with three other remote branch
offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and
the routers located in the remote branch offices.

R1 does not form an OSPF neighbor adjacency with R2. Which option would fix the issue?

A.R1 ethernetO/1 is shutdown. Configure no shutdown command.
B.R1 ethernetO/1 configured with a non-default OSPF hello interval of 25:
configure no ip ospf hello-interval 25
C.R2 ethernetO/1 and R3 ethernetO/O are configured with a non-default OSPF hello interval of 25;
configure no ip ospf hello-interval 25
D.Enable OSPF for R1 ethernetO/1; configure ip ospf 1 area 0 command under ethernetO/1

Correct Answer: B
Section: (none)
Explanation

Explanation/Reference:
Explanation:
Looking at the configuration of R1, we see that R1 is configured with a hello interval of 25 on interface
Ethernet 0/1 while R2 is left with the default of 10 (not configured).

QUESTION 12

Hotspot Question
Refer to the topology. Your company has decided to connect the main office with three other remote branch
offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and
the routers located in the remote branch offices.

An OSPF neighbor adjacency is not formed between R3 in the main office and R6 in the Branch3 office.
What is causing the problem?

A.There is an area ID mismatch.
B.There is a PPP authentication issue; the username is not configured on R3 and R6.
C.There is an OSPF hello and dead interval mismatch.
D.The R3 router ID is configured on R6.

Correct Answer: D
Section: (none)
Explanation

Explanation/Reference:
Explanation:
Using the show running-config command we see that R6 has been incorrectly configured with the same
router ID as R3 under the router OSPF process.

QUESTION 13

Hotspot Question
Refer to the topology. Your company has connected the routers R1. R2. and R3 with serial links. R2 and R3
are connected to the switches SW1 and SW2, respectively. SW1 and SW2 are also connected to the
routers R4 and R5.
The EIGRP routing protocol is configured.
You are required to troubleshoot and resolve the EIGRP issues between the various routers. Use the
appropriate show commands to troubleshoot the issues.

The loopback interfaces on R4 with the IP addresses of 10.4.4.4 /32, 10.4.4.5/32. and 10.4.4.6/32 are not
appearing in the routing table of R5 Why are the interfaces missing?

A.
B.R4 has been incorrectly configured to be in another AS, so it does not peer with R5.
C.Automatic summarization is enabled, so only the 10.0.0.0 network is displayed.
D.The loopback addresses haven’t been advertised, and the network command is missing on R4.

Correct Answer: B
Section: (none)
Explanation

Explanation/Reference:
Explanation:
For an EIGRP neighbor to form, the following must match:
– Neighbors must be in the same subnet- K values- AS numbers- Authentication method and key strings
Here, we see that R4 is configured for EIGRP AS 2, when it should be AS 1.

QUESTION 14

Hotspot Question
Refer to the topology. Your company has connected the routers R1. R2. and R3 with serial links. R2 and R3
are connected to the switches SW1 and SW2, respectively. SW1 and SW2 are also connected to the
routers R4 and R5.
The EIGRP routing protocol is configured.
You are required to troubleshoot and resolve the EIGRP issues between the various routers. Use the
appropriate show commands to troubleshoot the issues.

Which path does traffic take from R1 to R5?

A.The traffic goes through R2.
B.The traffic goes through R3.
C.The traffic is equally load-balanced over R2 and R3.
D.The traffic is unequally load-balanced over R2 and R3.

Correct Answer: A
Section: (none)
Explanation

Explanation/Reference:
Explanation:
Using the “show ip int brief command” on R5 we can see the IP addresses assigned to this router. Then,
using the “show ip route” command on R1 we can see that to reach 10.5.5.5 and 10.5.5.55 the preferred
path is via Serial 1/3, which we see from the diagram is the link to R2.

QUESTION 15

Hotspot Question
Refer to the topology. Your company has connected the routers R1. R2. and R3 with serial links.
R2 and R3 are connected to the switches SW1 and SW2, respectively. SW1
and SW2 are also connected to the routers R4 and R5.
The EIGRP routing protocol is configured.
You are required to troubleshoot and resolve the EIGRP issues between the various routers. Use the
appropriate show commands to troubleshoot the issues.

Router R6 does not form an EIGRP neighbor relationship correctly with router R1.
What is the cause for this misconfiguration?

A.The K values mismatch.
B.The AS does not match.
C.The network command is missing.
D.The passive-interface command is enabled.

Correct Answer: C
Section: (none)
Explanation

Explanation/Reference:
Explanation:
The link from R1 to R6 is shown below:

As you can see, they are both using e0/0. The IP addresses are in the 192.168.16.0 network:

But when we look at the EIGRP configuration, the “network 192.168.16.0” command is missing on R6.

tudy the following output taken on R1:
R1# Ping 10.5.5.55 source 10.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.5.5.55, timeout is 2 seconds:
Packet sent with a source address of 10.1.1.1
…….
Success rate is 0 percent (0/5)

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