Grading Summary

These are the automatically computed

results of your exam. Grades for essay Date Taken: 6/24/2017

questions, and comments from your Time Spent: 3 h , 00 secs

instructor, are in the “Details” section Points Received: 132 / 200 (66%)

below.

Question Type: # Of Questions: # Correct:

Multiple Choice 40 21

Many Multiple Choice 1

Matching 1

Short 6 N/A

1. Question : (TCO 1) A switch receives a frame from router GWI’s Gigabit Ethernet port 0/4. The router MAC Address is not entered in the switch MAC address table. The frame is destined to Host-C. What action would the switch perform first on the frame?

Student Answer: Verify source MAC is valid

O Performs an error check on the frame

C) Forwards the frame as a unicast to Host-C.

x @ Forwards the frame as a broadcast frame to all ports except for the ingress port

O Changes the time-to-live (ITL) field in the packet header

Instructor Explanation:

Points Received:

Comments: See Chapter 1.

2. Question : (TCO 1) Which action does not occur before the boot loader initializes the

Student Answer: O Boot loader executes POST

C) Switch loads boot loader software

O Both A and B are correct.

@ Firmware in POST checks the BIOS before loading it in memory (D All of the above

Instructor Explanation:

Points Received:

Comments: See Chapter 2.

3. Question : (TCO 1) Which step is not appropriate to recover from a damaged operating system?

Student Answer: @ Load the recovery IOS backup files.

C) Press mode button until System LED turns briefly amber. (l) Unplug the switch power cord.

C) Boot loader prompt switch: will appear.

O Both B and C are correct.

Instructor Explanation:

Points Received:

Comments: See Chapter 2.

4. Question : (TCO 1) A network engineer observes that the system LED on a switch is amber. What does this indicate?

Student Answer: C) The system is booting up.

O The system is not receiving power from the backplane bus.

@ Power is not functioning properly.

C) The RPS is off and not properly working.

Both A and C are correct.

Instructor Explanation:

Points Received:

Comments: See Chapter 2.

5. Question : (TCO 2) This VLAN is used to carry untagged frames between switches.

Student Answer: O A data VLAN

C) A management VLAN

O An unmarked VLAN

A native VLAN

O An administrative VLAN

Instructor Explanation:

Points Received:

Comments: See Chapter 3 and the online lecture.

6. Question : (TCO 2) This VLAN carries time-sensitive information.

Student Answer: O Data VLAN

O Administrative VLAN

O Management VLAN

X @ Native VLAN

Voice VLAN

Instructor Explanation:

Points Received:

Comments : See Chapter 3 and the online lecture.

7. Question : (TCO 2) Switch A and Switch B are connected together via their Fast Ethernet FO/IO. Switch A’s port is statically configured as Trunk and Switch’s B port is set as Dynamic Desirable. What will the status of the connection be between the two switches?

Student Answer: O Trunk Access

X @ Limited connectivity

C) Disabled

O Auto

Instructor Explanation:

Points Received :

Comments: See Chapter 3 and the online lecture.

8. Question . (TCO 3) This network passes data most of the time but sometimes for reasons unknown to the junior network engineer in charge of monitoring the network, the network is not available or may suffer from performance degradation. What is the characteristic that is violated?

Student Answer: (r) Security

X @ Availability

O Reliability

O Manageability

O Scalability

Instructor Explanation:

Points Received:

Comments: See Chapters 4 and 5 and the online lecture.

9. Question : (TCO 3) Routers use dynamic routing protocols to

Student Answer: O encapsulate frames as they pass through the ingress interface determine the cost to forward a packet to its destination

O exchange layer 2 networks with each other

O encapsulate frames as they pass through the egress interface @ discover remote networks

Instructor Explanation :

Points Received:

Comments: See Chapters 4 and 5 and the online lecture.

10. Question : (TCO 3) This switching mechanism is considered old and not recommended by Cisco.

Student Answer: O Main express forwarding (MEF)

C.) Cisco ultra-fast forwarding (CUF) q' (8) Process switching

O Fast switching

C') Cisco express forwarding (CEF)

Instructor Explanation:

Points Received :

Comments: See Chapters 4 and 5 and the online lecture.

11. Question : (TCO 3) Which command would you use to troubleshoot a routing problem between a router and a switch?

Student Answer: O show ip interface brief

C) debug ip route

O debug interface ip D show ip protocols

in

Instructor Explanation:

Points Received:

Comments: See Chapter 5 and the online lecture.

12. Question : (TCO 3) What happens next after a router matches a destination address to a network address in its routing table?

Student Answer: @ Forwards the packet to the next hop ingress address on the local x

router.

O Checks the ARP cache and forwards packet to local host. (D Encapsulate the packet into a destination IP address before forwarding.

O Check the routing table for lowest cost path.

(‘D None of the above

Instructor Explanation:

Points Received:

Comments: See Chapters 4 and 5 and the online lecture.

13, Question : (TCO 4) A disadvantage to using static routes is

Student Answer: C:) the path a static route uses to send data is known

O use less resource on the router static routes use less bandwidth than dynamic routing protocols

@ initial configuration and maintenance is time-consuming

O None of the above

Instructor Explanation:

Points Received:

Comments: See Chapter 6, page 287.

14. Question : (TCO 4) Which statement is true regarding classless routing protocols?

Student Answer: O Sends wildcard mask information in routing updates

O Sends complete routing table update to all neighbors

(l) Supported by RIP version 1 only

C) Only uses first octet of network addresses to make routing decision

@ Supports variable length subnet masking

Instructor Explanation:

Points Received:

Comments: See 7.1.4 Types of Routing Protocols.

15. Question :

Student Answer: (TCO 4) The administrative distance value of static routes is

120

0 90

@ None of the Above

Instructor Explanation: See Chapter 6, page 287.

Points Received :

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Comments:

16. Question . (TCO 4) What task does dynamic routing protocols perform?

Student Answer: O Discover hosts

X @ Maintain neighbor relationship

O Exchange default gateways

Network physical topology

O Dynamic recovery from fault

Instructor Explanation:

Points Received:

Comments: See Section 7.1.1 Dynamic Routing Protocol Operation.

17. Question : (TCO 4) In a fully specified static IPv6 route, both the and are specified. interface

Student Answer: C) exit

O IPv4 address of the destination network

X @ IPv6 next-hop address

Answers A and B are correct.

C) Answers A and C are correct.

Instructor Explanation:

Points Received:

Comments: See Chapter 6, page 319.

18. Question : (TCO 5) Router_A is currently the OSPF designated router (DR). When will an election occur for a new DR?

Student Answer: C) When a new router comes up with a higher OSPF priority

’t @ When the multiaccess interface of the current DR goes down O When a new router-ID is configured on a neighbor router O Answers A, B, and C are correct.

O None of the above

Instructor Explanation:

Points Received:

Comments: See Routing and Switching Essentials—Section 8.3.2.

19. Question : (TCO 5) The 224.0.0.5 OSPF address is used by

Student Answer: O all routers to exchange link state advertisement in multiaccess networks the designated router to forward LSAs to all routers C) DROthers and backup designated routers to forward LSAs o a reserved group of high priority OSPF routers

(D None of the above

Instructor Explanation: See Routing and Switching Essentials—Section 8.1.1.

Points Received:

Comments:

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20. Question : (TCO 5) An OSPF router is configured with a basic hello timer of 30

seconds. What will the default dead interval timer be?

Student Answer: C) 30 seconds

0 90 seconds

0 60 seconds

10 seconds

@ 120 seconds

Instructor Explanation: See Routing and Switching Essentials—Section 8.1.1.

Points Received:

Comments:

21. Question : (TCO 5) The OSPF packet header contains

Student Answer: @ the area ID field

O the DROther field

C) the DRTrust field

C) the router autonomous system field

Answers A and B are correct.

Instructor Explanation: See Routing and Switching Essentials—Section 8. 1.1.

Points Received:

Comments:

22. Question : (TCO 5) Which command will verify that a router that is running OSPFv2

has formed an adjacency with other routers in its OSPF area?

Student Answer: C.) show running-configuration

@ show ip ospf neighbor

O show ipv6 ospf neighbor

show ipv6 route ospf

C) show ipv6 interface brief

Instructor Explanation: See Routing and Switching Essentials—8.3.3 Verify OSPFv3.

Points Received:

Comments:

23. Question : (TCO 5) Single area OSPFv3 has been enabled on a router via the ipv6

router ospf 5 command. Which command will enable this OSPFv3 process

on an interface of that router?

Student Answer: ipv6 ospf O area O

X @ ipv6 ospf 0 area 5

(D ipv6 ospf 5 area O

Ci ipv6 ospf 5 area 5

C) None of the above

Instructor Explanation: See Routing and Switching Essentials—8.3.2 Configuring OSPFv3.

Points Received:

Comments:

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24. Question : (TCO 5) Cisco’s routers use this first to determine router-ID in OSPF.

Assume IP addresses are configured on physical and Loopback interfaces

and are working as expected.

Student Answer: X @ Largest physical interface IP of Loopback

O Global interface-ID

Lowest physical interface IP of Loopback

Local interface-ID

O None of the Above

Instructor Explanation: See 8.2.1 OSPF Router-ID.

Points Received:

Comments:

25. Question : (TCO 6) What function describes the use of an access control list?

Student Answer: ACLs can permit or deny traffic based upon the MAC address originating on the router.

O Extended ACLs must be applied in egress interfaces to lower CPU

utilization.

O ACLs provide assurance that no attacks occur on the network.

O ACLs provide best performance when used in conjunction with

encryption.

@ ACLs can control which areas a host can access on a network.

Instructor Explanation: See 9.1.1 Purpose of ACLs.

Points Received:

Comments:

26. Question : (TCO 6) The command used to apply an IPv6 ACL to an interface is

Student Answer: O IPv6 use-act

C) IPv6 access-group

O IPv6 access-class traffic

O IPv6 traffic-filter

X @ None of the above

Instructor Explanation: See Chapter 9, page 622.

Points Received:

Comments:

27. Question : (TCO 6) What is a possible use of an access control list in an enterprise

network?

Student Answer: Reducing inout buffer to ensure protection against denial of service

O Limiting access to physical server farm areas

C) Controlling requests to file services

Extending compute resources to ensure data protection

Controlling virtual terminal access to routers

Instructor Explanation: See 9.1.1 Purpose of ACLs.

Points Received:

Comments:

https://frameset.next.ecoIIege.com/(NEXT(aa65bea5b4))/Main/AIIMode/FramesetHybrid/GeneralFramesetView.ed

28. Question : (TCO 6) Which statement describes a characteristic of standard IPv4 ACLs?

Student Answer: O They can be created with a number but not with a name.

They can be applied in line mode only.

They can be created in the interface configuration mode.

They filter traffic based on source IP addresses and ports only.

None of the above

Instructor Explanation:

Points Received:

Comments: See 9.1.2 Standard Versus Extended IPv4 ACLs.

29. Question : (TCO 6) Which statement describes a characteristic of extended IPv4 ACLs?

Student Answer: X Due to their flexibility they use almost no resources on the router.

O They can be created both in the interface and line modes.

C) They can filter based on the protocol field.

They are limiting in what source addresses can be filtered.

They apply only to network addresses and not a single host.

Instructor Explanation:

Points Received:

Comments: See 9.1.2 Standard Versus Extended IPv4 ACLs.

30. Question :

Student Answer: (TCO 6) If a router has three interfaces and is routing both IPv4 and IPv6 traffic, what is the maximum number of ACLs that could be created and applied to it?

0 6

0 15

Instructor See 9.1.4 Guidelines for ACL Creation—3 interfaces x 2 protocols x 2 directions

Explanation : = 12.

Points Received:

Comments:

31. Question : (TCO 6) A network engineer has configured an access-list on NY-RI to

allow only SSH traffic to the router from network 192.168.255.0/24.

Which command correctly applies to the above scenario?

Student Answer: C) NY-RI(config-ACL)# ip access-class 101 out

(0 NY-Rl(config-if)# ip access-group 1 in

X @ NY-RI (config)# ip access-class 101 in

C) NY-Rl(config-line)# access-class 99 in

C) ip access-class 50 in

Instructor Explanation: See 9.2.3 Securing VTY Ports With a Standard IPv4 ACL.

Points Received:

Comments:

https://frameset.next.ecol’ege.com/(NEXT(aa65bea5b4))/Main/NIMode/F ramesetHybrid/GeneralFramesetView.ed

32. Question : (TCO 7) Which DHCPv4 message will a client send to request an IPv4 address that is offered by a DHCP server?

Student Answer: Unicast DHCPREQUEST

O Broadcast DHCPOFFER

C) Unicast DHCPACK

C) Broadcast DHCPREQUEST

X None of the above

Instructor Explanation:

Points Received :

Comments: See 10.1.1 DHCPv4 Operation.

33. Question : (TCO 7) This layer 2 address is used when a DHCP client makes a request to a DHCP server for an IPv4 address.

Student Answer: (D 0.0.0.0 as a source address

0 255.255.255.255 as a destination address 0 169.254.255.255

(D Answers A and B are correct.

Instructor Explanation:

Points Received:

Comments: See 10.1.1 DHCPv4 Operation.

34. Question : (TCO 7) What is the purpose of the DHCPOFFER message during the DHCPv4 process?

Student Answer: O To give a DHCP client a permanent IP address

O To broadcast an IP offer so that no other hosts use the address

(J) To synchronize with the default gateway

C:) To propose a lease of an IP address to a DHCP client

X @ To initiate the DHCP process by the client

Instructor Explanation:

Points Received :

Comments: See 10.1.1 DHCPv4 Operation.

35. Question : (TCO 7) An administrator issues the commands:

Rol(config)# interface FO/3

Rol(config-if)# no ip address dhcp

What is the administrator trying to achieve?

Student Answer: O Disable DHCPv4 server on the router

(3 Delete the DHCP pool on the router

C) Automatically release all assigned IPv4 addresses Q Answers A, B, and C are correct.

@ None of the above

Instructor Explanation: See 10.1.3 Configure DHCPv4 Client.

Points Received:

Comments:

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36. Question : (TCO 7) The show ip dhcp binding command displays a

Student Answer: the MAC table cache information the resolved names to IP addresses

C) the local ARP table

C) the fast cache used for redirecting traffic on local subnets O the list of all IPv4 to MACs

Instructor Explanation:

Points Received:

Comments: See 10.1.4 Troubleshoot DHCPv4.

37. Question : (TCO 7) A router just received an RS message from a PC requesting IPv6 prefb< and prefix length information via the SLAAC method. What message does the router send back to the PC after receiving the RS message?

Student Answer: C) An RA ACK message

An ACK message

O A CONFIRM message

O A SYN ACK message

None of the above

Instructor Explanation:

Points Received:

Comments: See 10.2.1 SLAAC and DHCPv6.

38. Question : (TCO 7) The command to use a router into a DHCP IPv6 relay agent on an interface is

Student Answer: (D ipv6 dhcp relay

O ipv6 dhcp relay destination IPv6 address

X @ ipv6 dhcp relay-agent

O Answers A and C are correct.

(C) None of the above

Instructor Explanation:

Points Received:

Comments: See Chapter 10, page 683.

39. Question : (TCO 4) RIPv1 has the following characteristic:

Student Answer: Bandwidth is used as the metric for path selection

O Updates are event-driven O Uses a topology table database

O Answers A and C are correct.

@ None of the above

Instructor Explanation: See Chapter 7, page 414.

Points Received:

Comments:

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