Test CCNA32

32. In the implementation of VLSM techniques on a network using a single Class C IP address, which subnet mask is the most efficient for point-to-point serial links?

A. 255.255.255.0
B. 255.255.255.240
C. 255.255.255.248
D. 255.255.255.252
E. 255.255.255.254
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Correct D
Explaination:
The subnet mask /30 is usually used for point-to-point serial links.

Test CCNA 31

31. Refer to the exhibit. Switch-1 needs to send data to a host with a MAC address of 00b0.d056.efa4. What will Switch-1 do with this data?

A. Switch-1 will drop the data because it does not have an entry for that MAC address.
B. Switch-1 will flood the data out all of its ports except the port from which the data originated.
C. Switch-1 will send an ARP request out all its ports except the port from which the data originated.
D. Switch-1 will forward the data to its defult gateway.
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Correct B
Explaination:
This question tests the operating principles of the layer 2 switch. Check the MAC address table of Switch1 and find that the MAC address of the host does not exist in the table. Switch1 will flood the data out all of its port except the port from which the data originated to determine which port the host is located in.

Test CCNA 30

30. Refer to the exhibit. Which switch provides the spanning-tree designated port role for the network segment that services the printers?

A. Switch1
B. Switch2
C. Switch3
D. Switch4
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Correct C
Explaination:
Printers are connected by hubs. Decide the switch that provides the spanning-tree designated port role between Switch3 and Switch4. They have the same priority 32768. Compare their MAC addresses. Switch3 with a smaller MAC address will provide a designated port for printers.

Test CCNA 29

29. Refer to the exhibit. The partial frame shown in the exhibit displays select header information as it arrives at the destination host. Which graphic represents the correct header information in the responding frame returned to the remote host?

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Correct
D

Test CCNA 28

28. Two routers named Atlanta and Brevard are connected by their serial interfaces as shown in the exhibit, but there is no data connectivity between them. The Atlanta router is known to have a correct configuration. Given the partial configurations shown in the exhibit, what is the problem on the Brevard router that is causing the lack of connectivity?

A. A loopback is not set.
B. The IP address is incorrect.
C. The subnet mask is incorrect.
D. The serial line encapsulations are incompatible.
E. The maximum transmission unit (MTU) size is too large.
F. The bandwidth setting is incompatible with the connected interface.

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Correct B
Explaination:
The IP address of the S0 interface of Atlanta is 192.168.10.0/24, and the IP address of the S1 interface of Breavard is 192.168.11.0/24 Change the IP address of the S1 interface to 192.168.10.0/24, the same as that of the S0 interface.

Test CCNA 27

27. Refer to the exhibit. The networks connected to router R2 have been summarized as a 192.168.176.0/21 route and sent to R1. Which two packet destination addresses will R1 forward to R2? (Choose two.)

A. 192.168.194.160
B. 192.168.183.41
C. 192.168.159.2
D. 192.168.183.255
E. 192.168.179.4
F. 192.168.184.45

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Correct B, E
Explaination:
From the IP address 192.168.176.0/21, we can know that the range of the IP address of the network is 192.168.176.1 - 192.168.183.254

Test CCNA 26

26. Refer to the output from the show running-config command in the exhibit. What should the administrator do to allow the workstation connected to the FastEthenet 0/0 interface to obtain an IP address?

A. Apply access-group 14 to interface FastEthernet 0/0.
B. Add access-list 14 permit any to the access list configuration.
C. Configure IP address of the FastEthernet 0/0 interface to 10.90.201.1.
D. Add an interface description to the FastEthernet 0/0 interface configuration.

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Correct C
Explaination:
The F0/0 interface of the router is the gateway of the internal network; the administrator must configure an IP address for the interface.

Test CCNA 25

25. Which routing protocol by default uses bandwidth and delay as metrics?

A. RIP

B. BGP

C. OSPF

D. EIGRP

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Correct D
Explaination:
This question tests the metrics of various routing protocols. RIP uses hop-count metrics: BGP uses complicated path attributes as metrics; OSPF uses bandwidth as metrics; and EIGP uses banwidth and delay as metrics by default.

Test CCNA 24

24. Refer to the exhibit. Which statement describes DLCI 17?





A. DLCI 17 describes the ISDN circuit between R2 and R3

B. DLCI 17 describes a PVC on R2. it cannot be used on R3 or R1.

C. DLCI 17 is the Layer 2 address used by R2 to describle a PVC to R3.

D. DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider.

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Correct C
Explaination:
In a frame-relay network, the device needs Layer 2 addressing to define PVC . DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3

Test CCNA 23

23. A company is installing IP phones. The phones and office computers connect to the same device. To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computer, and what technology should be implemented on this device? (Choose two)

A. hub

B. router

C. switch

D. STP

E. subinterfaces

F. VLAN

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Correct C, F
Explaination:
You can configure VLANs on the switch to distinguish two types of data traffec.

Test CCNA 22

22. Refer to the topology and router configutation shown in the graphic. A host on the LAN is accessing an FTP server across the Internet. Which of the following addresses could appear as a source address for the packets forwarded by the router to the destition sever?

A. 10.10.0.1

B. 10.10.0.2

C. 199.99.9.33

D. 199.99.9.57

E. 200.2.2.17

F. 200.2.2.18

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Correct D

Explanation:

From Ip nat pool test 199.99.9.40 199.99.9.62 netmask 255.255.255.224 we know that the range of the inside local address is 199.99.9.40 - 199.99.9.62

Test CCNA 21

21. A network interface port has collision detection and carrier sinsing enabled on a shared twisted pair network. From this statement. what is known about the net work interface port?

A. This is a 10 Mb/s switch port.

B. This is a 100 Mb/s switch port.

C. This is an Ethernet port operating at half duplex.

D. This is an Ethernet port operating at full duplex.

E. This is a port on a network interface card in a PC.

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Correct C
Explaination:
CSMA/CD is the basic way that the traditional Ethenet operates. 10M interface is the way that an Ethernet operates at half duplex.

Test CCNA 20

20. Refer to the exhibit. Assume that all router interfaces are operational and correcty configured. In addition, assume that OSPF has been correcty configured on router R2. How will the default rout configured on R1 affect the operation of R2?

A. Any packet destined for a network that is not directly connected to router R1 will be dropped.

B. Any packet destined for a network that is not direcly connected to router R2 will be dropped immediately.

C. Any packet destined for a network that is not directly connected to router R2 will be dropped immediately because of the lack of a gateway on R1.

D. The networks directly connected to router R2 will not be able to communicate with the 172.16.100.0, 172.16.100.128, and 172.16.100.64 subnetworks.

E. Any packet destined for a network that is not referenced in the routing table of router R2 will be directed to R1. R1 will then send that packet back to R2 and a routing loop will occur.

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Correct E

Test CCNA 19

19. Which spread spectrum technology does the 802.11b standard define for operation?

A. IR

B. DSSS

C. FHSS

D. DSSS and FHSS

E. IR,FHSS, and DSSS

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Correct B

Test CCNA 18

18. LAB

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Corrext Text(s):

Router>en

Router#config teminal

Router(config)#hostname Weaver

Router(config)#ip nat pool test 198.18.184.105 198.18.184.110 netmask 255.255.255.248

Router(config)#ip nat inside source list 1 pool test overload

Router(config)#access-list 1 permit 192.168.100.16 0.0.0.15

Router(config)#int s0/0

Router(config-if)#ip nat outside

Router(config-if)#exit

Router(config)#int fa0/0

Router(config-if)#ip nat inside

Explaination:

This question tests knowledge of NAT . The IP address in this question are shangeable.

Test CCNA 17

17. Refer to the exhibit. What is the most efficient summarization that R1 can use to advertise its networks to R2?

A. 172.1.0.0/22

B. 172.1.0.0/21

C. 172.1.4.0/22

D. 172.1.4.0/24

172.1.5.0/24

172.1.6.0/24

172.1.7.0/24

E. 172.1.4.0/25

172.1.4.128/25

172.1.5.0/24

172.1.6.0/24

172.1.7.0/24

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Correct C

Explaination:

When the subnet mask is /22, R1 can advertise its networks to R2.

Test CCNA 16

16. The user of Host1 wants to ping the DSL modem/router at 192.168.1.254 Based on the Host1 ARP table that is shown is the exhibit, what will Host1 do?

A. send a unicast ARP packet to the DSL modem/router

B. send unicast ICMP packets to the DSL modem/router

C. send Layer 3 broadcast packets to which the DSL modem/router responds

D. send a Layer 2 broadcast that is received by Host2, the switch, and the DSL modem/router

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Correct B

Test CCNA 15

15. Refer to the exhibit. Switch1 has just been restarted and has passed the POST routine. Host A sends its initial frame to Host C. What is the first thing the switch will do as regards populating the swtching table?

A. Switch1 will add 192.168.23.4 to the switching table.

B. Switch1 will add 192.168.23.12 to the switching table.

C. Switch1 will add 000A.8A47.E612 to the switching table.

D. Switch1 will add 000B.DB95.2EE9 to the switching table.

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Correct C

Explaination:

That Switch1 has just been restarted and has passed the POST routine indicates that MAC address table of switch 1 is empty. When Host A sends its initial frame to Host C, Switch1 records the MAC address of Host A and the map ping port number in its MAC address table. Note that a switch records the source MAC address rather than the destination MAC address.

Test CCNA 14

14. What are two security appilances that can be installed in a network? (chooses two.)

A. ATM

B. IDS

C. IOS

D. IOX

E. IPS

F. SDM

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Correct B,E

Test CCNA 13

13. Refer to the exhibit. The access list has been configurad on the S0/0 interface,will be denied?(Choose two)

access-list 101 deny tcp 192.168.15.32 0.0.0.15 any eq tenet
access-list 101 permit ip any any

A. source ip address: 192.168.15.5 destination port: 21

B. source ip address: 192.168.15.37 destination port: 21

C. source ip address: 192.168.15.41 destination port: 21

D. source ip address: 192.168.15.36 destination port: 23

D. source ip address: 192.168.15.46 destination port: 23

F. source ip address: 192.168.15.49 destination port: 23

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Correct D, E

Explanation:

From the access control list, we know that the denied network segment is 192.168.15.32 0.0.0.15 , that is, 192.168.15.32/28

--- 192.168.15.32 - 192.168.15.47. Telnet requests from a host in this nework segment will denied.

Test CCNA 12

12. What are two recommended ways of protecting network device configuration file from outside network secutity theats?(Choose two.)

A. Allow unrestricted access to the console or VTY ports.

B. Use a firwall to restrict access from the outside to the nework device.

C. Always use Telnet to access the device command line because its data is automaticlly encrypted.

D. Use SSH or another encapted and authenticated transport to access device configuration.

E. Prevent the loss of passwords by disabling password encryption.

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Correct B, D
Explaination:
To protect network device configuration files from outside network security therats, place a firewall at the edge of the network and set encrypted access such as SSH to improve access security.

Test CCNA 11

11. For security reasons, the network administrator needs to prevent ping into the corporate networks from hosts outside the internetwork. Which protocol should be blocked with access control lists?

A. IP

B. ICMP

C. TCP

D. UDP

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Correct B
Explaination:
Ping packets use the ICMP protocol; therefore ICMP protocal should be blocked witch access control lists.

Test CCNA 10

10. Refer to the exhibit. The network administrator has created a new VLAN on Switch1 and added host C and host D. The adminsitrator has properly configured switch interfaces FastEthernet0/13 through FastEthernet0/24 to be members of the new VLAN. However, after the network administrator completed the configuration, host A could communicate with host B, but hos A could not communicate with host C or host D. Which commands are required to resolve this problem?

A. Router(config)# interfaace fastethernet 0/1.3

Router(config-if)# encapsulation dot1q 3

Router(config-if)# ip address 192.168.3.1 255.255.255.0

B. Router(config)# router rip

Router(config-router)# network 192.168.1.0

Router(config-router)# network 192.168.2.0

Router(config-router)# network 192.168.3.0

C. Switch1# vlan database

Switch1(vlan)# vtp v2-mode

Switch1(vlan)# vtp domain cisco

Switch1(vlan)# vtp server

D. Switch1(config)# interface fastethernet 0/1

Switch1(config-if)# switchport mode trunk

Switch1(config-if)# switchport trunk encapsulation isl

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Correct A

Explaination:

The reason that the newly-added VLAN3 could not communicate with other VLAN members is that no Lauer 3 route exits. To sove this problem, configure an interface on the router fo VLAN3, an IP address for the interface.

Test CCNA 9

9. Which type of attack is characterized by a flood of packets that are requesting a TCP connection to a server?

A. denial of service

B. brute force

C. reconnaissance

D. Trojan horse

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Correct A
Explanation:
A Dos attack can result in a flood of packets that are requesting a TCP connection to a server.

Test CCNA 8

8. The comand frame-relay map ip 10.121.168 102 broadcast was entered on the rout. Which of the following statements is true concerning this command?

A. This command should be executed from the global configutation mode.

B. The IP address 10.121.16.8 is the local router port used to forward data.

C. 102 is the remote DLCI that will recive the information.

D. This command is required for all Frame Relay configuration.

E. The broadcast option allows packets, such as RIP update, to be forwarded across the PVC.


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Correct E
Explaination:
Broadcast is added to the configurations of the frame relay, so the PVC supports broadcast, allowing the routing protocol updates that use the broadcast update mechanism to be forwarded accross itself.

Test CCNA 7

7. Refer to the exhibit. What two facth can be determined from the WLAN diagram?(choose two.)




A. The area of overlap of the two cell represents a basic sevice set (BSS).

B. The network diagram represents an extended sevice set(ESS).

C. Access points in each cell must be configured to use channel 1.

D. The area of overlap must be less than 10% of the area to ensure connectivity.

E. The two APs should be configured to operate on different channels.

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Correct B,E

Test CCNA 6

6. Hotspot question. Click on the correct location or locations in the exhibit.

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Explanation

Question#1

Answer:R1 will drop this packet because it is not a valid ip address

The destination IP address 192.168.1.255 is broadcast address of the network 192168.1.0 /24 on router R1.

Question#2

Answer:ip route 0.0.0.0 0.0.0.0 s 0/0/0

Explanation:To enable users on 192.168.1.0 network to access files on server1, we need to establish a default static route.

Question#3

Answer:3

Explanation:

First: Host1 encapsulates the packet into frames and forwards to the switch.Switch in turn forwards the same frame to router R1.

Second: Router R1 receives the frame on one interface and it is encapsulates into new packet once it leaves the router R1 towards the direction of server1.

Third: R2 receives this packet and it also encapsulates the frame into new packet when it is forwarded to server1 on different interface of R2.

Question#4

Answer:On router R1, configure a NAT to translate address on 209.165.100.0 to 192.168.1.0 network.

Question#5

Answer:255.255.255.0

Explanation:Given subnet mask for this network is 255.255.255.0 based on the exhibit.

To find the correct subnet mask for this network based on number of devices shown in the exhibit that are already configured with IP address and by not wasting IP addresses scheme.

Test CCNA 5

5. Refer to the exhibit. How many brodcast domains exist the exhibited topology?

A. One

B. two

C. three

D. four

E. five

F. six

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Correct C

Explanation

From the features of the VLAN , we know that a VLAN is a broadcast domain. There are three VLANs in the exhibit, so three broadcast domain exist in the exhibited topology.

Test CCNA 4

4. A single 802.11g access point has been configured and install in the center of a square office. A few wireless users are experiencing slow performance and drops while most users are operating at peak effeciency. what are thee likely causes of this problem?(Choose three.)

A. mismatched TKIP encryption

B. null SSID

C. cordless phones

D. mismatched SSID

E. metal file cabinets

F. antenna type or direction

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Correct C, E, F

Test CCNA 3

3. A default Frame Relay WAN is classified as what type of physical network?



A. point-to-point

B. broadcast multi-access

C. nonbroadcast multi-access

D. nonbroadcast multipoint

E. brodcast point-to-multipoint



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Correct C

Explaination:

A default Frame Relay WAN is classified as Nonbroadcast multi-access(NBMA).

Test CCNA 2

2. what are two reasons that a network administrator wold use access lists? (Choose two.)

A. to control vty access into a router

B. to control broadcast traffic though a router

C. to filter traffic as it passes through a router

D. to fillter traffic that originates from the router

E. to replace passwords as a line of defense against security incursions

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Correct A, C

Explaination:
The purposes for setting ACLs on a router are controlling vty access into a router and filtering traffic as it passes through a router.

Test CCNA 1

1. Which of the following are associated with the application layer of the OSI model? (Choose two.)

A. ping

B. Telnet

C. FTP

E. ip


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Correct B, C
Explaination
Ping operates at the network layer, TCP operates at the transportation layer,and IP operates at the nework layer.

640-802 Cisco Certified Network Associate

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ccna เป็นใบ certificate ของ Cisco ในระดับ Associate ระดับนี้เป็นระดับเริ่มต้นซึ่งเปรียบเสมือนประตูทางเข้าด่านแรกสำหรับผู้ทำงานด้าน IT Network

ความสำคัญของใบนี้ในเรื่องของการทำงานเช่น ประกาศรับสมัครงานของ หลายๆบริษัท ในคุณสมบัติก็จะบอกว่า มี ccna ด้วยจะพิจารณาเป็นพิเศษ หรือ หากทำงานกับบริษัทที่เป็น partner กับ cisco ก็จะได้ค่าใบนี้เพิ่มจากเงินเดือนปกติ

การสอบ CCNA สามารถสอบได้ที่ประเทศไทย ตามศูนย์สอบของ VUE หรือ Prometic โดยข้อสอบมีลักษณะเป็นแบบ Multiple Choice,Drag and Drop (ลากแล้ววางเพื่อจับคู่ให้ถูกต้องแล้วแต่โจทย์) และแบบ Simulation ซึ่งเป็นการจำลองหน้าจอจริงเหมือนขณะเรากำลังคอนฟิกเร้าเตอร์หรือสวิตซ์ และให้ผู้เข้าสอบคีย์คำสั่งต่างๆตามข้อกำหนด

สำหรับค่าสอบตอนนี้ราคา 250$ ข้อสอบ 52 ข้อ มี simulate config Router 2 ข้อ คะแนนเต็ม 1000 คะแนน แต่ต้องได้มากกว่า 825 คะแนน น้องที่จบปี 4 แล้วมีใบนี้ จะหางานง่ายกว่าคนที่ไม่มี และเงินเดือนได้เยอะกว่าแน่นอน

พูดเป็นทางการเยอะแล้ว สำหรับบล็อกนี้ ก็จะนำตัวอย่างข้อสอบมาให้ลองทำเล่นๆ หากไปสอบแล้วไม่ต้องตกใจนะถ้าข้อสอบทั้งโจทย์และคำตอบตรงกัน อิอิ... ()

ข้อแนะนำ สำหรับคนที่มีเวลาควรจะทำการศึกษาเนื้อหาอย่างจริงนะเพราะมันจะเป็นความรู้ที่ติดตัวเราและสามารถนำไปใช้ได้ในการทำงานจริงๆ

การสมัครสอบ และเนื้อหาโดยละเอียดดูได้จาก http://telecomccna.blogspot.com/