http://learn-ccna.com » CCNA 4 Chapter 1 http://learn-ccna.com Just another WordPress site Fri, 08 Jul 2011 07:58:20 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Cisco Ccna Discovery 4 Module 1 Exam(100_correct) http://learn-ccna.com/2009/12/08/cisco-ccna-discovery-4-module-1-exam100_correct/ http://learn-ccna.com/2009/12/08/cisco-ccna-discovery-4-module-1-exam100_correct/#comments Tue, 08 Dec 2009 16:34:14 +0000 admin http://learn-ccna.com/?p=1336 learn-ccna.com

1,Refer to the exhibit. What happens when Host 1 attempts to send data?


*Frames from Host 1 are dropped, but no other action is taken.
*Frames from Host 1 cause the interface to shut down, and a log message is sent
*Frames from Host 1 are forwarded, but a log message is sent.
*Frames from Host 1 are forwarded, and no log message is sent because the switchport port-security violation command was not configured.

2,Refer to the exhibit. Which two devices are part of the access design layer? (Choose two.)
*Edge2
*ISP4
*BR4
*FC-AP
*FC-CPE-1
*FC-ASW-2
3,Refer to the exhibit. Two access layer Catalyst switches are connected. Both switches have ports configured for VLANs 40 and 50 as shown. What must be configured on the two switches to allow the link between the two switches to carry data for multiple VLANs?
*trunking
*STP
*ACLs
*switch blocks
4,What are three ways to ensure that an unwanted user does not connect to a wireless network and view the data? (Choose three.)
*disable SSID broadcasting
*configure filters to restrict IP addresses
*use authentication between clients and the wireless device
*use NetBIOS name filtering between clients and the wireless device
*configure strong encryption such as WPA
*use a WEP compression method

5,Refer to the exhibit. The server sends an ARP request for the MAC address of its default gateway. If STP is not enabled, what is the result of this ARP request?

*Router_1 contains the broadcast and replies with the MAC address of the next-hop router.
*Switch_A replies with the MAC address of the Router_1 E0 interface.
*Switch_A and Switch_B continuously flood the message onto the network.
*Switch_B forwards the broadcast request and replies with the Router_1 address.

6,Which two considerations are valid when designing access layer security? (Choose two.)
*In a large wireless network, the most efficient method to secure the WLAN is MAC address filtering.
*DoS attacks are normally launched against end-user PCs and can be mitigated by installing personal firewalls on all company PCs.
*SSH is more secure than Telnet to administer network devices.
*Disabling unused ports on the switches helps prevent unauthorized access to the network.
*Attacks originating inside the network are common, but placing servers inside a DMZ cannot protect against this type of attack.
7,A network designer is creating a new network. The design must offer enough redundancy to provide protection against a single link or device failure, yet must not be too complex or expensive to implement. What topology would fill these needs?
*star
*full mesh
*partial mesh
*extended star
*hub and spoke

8,Centralizing servers in a data center server farm can provide which benefit over a distributed server environment?
*It keeps client-to-server traffic local to a single subnet.
*Servers located in a data center require less bandwidth.
*It is easier to filter and prioritize traffic to and from the data center.
*Server farms are not subject to denial of service attacks.

9,Refer to the exhibit. Which two situations cause the router to display the rommon1> prompt? (Choose two.)


*This is a normal stage in the router boot sequence.
*A password recovery procedure is in progress.
*The Cisco IOS software could not be loaded from flash memory or a TFTP server.
*The configuration was not saved before the last reload.
*The configuration register was changed to 0×2142 before the last reload.

10,Refer to the exhibit. The network administrator creates a standard access control list to prohibit traffic from the 192.168.1.0/24 network from reaching the 192.168.2.0/24 network while still permitting Internet access for all networks. On which router interface and in which direction should it be applied?
*interface fa0/0/0, inbound
*interface fa0/0/0, outbound
*interface fa0/0/1, inbound
*interface fa0/0/1, outbound
11,In a well-designed, high-availability network, which device significantly affects the most users if a failure occurs?
desktop PC of the user
*large switch in the network core layer
*large switch in the network distribution layer
*small workgroup switch in the network access layer

12,Which three statements describe the functions of the Cisco hierarchical network design model? (Choose three.)

*Route summarization is not necessary at the core and distribution layers.
*The distribution layer is responsible for traffic filtering and isolating failures from the core.
*Two goals of the core layer are 100 percent uptime and maximizing throughput.
*The access layer provides a means of connecting end devices to the network.
*The distribution layer distributes network traffic directly to end users.
*The core layer usually employs a star topology.

13,Which Cisco IOS function can be configured at the distribution layer to filter unwanted traffic and provide traffic management?
virus protection
*spyware protection
*VPNs
*access control lists

14,What address can be used to summarize networks 172.16.1.0/24, 172.16.2.0/24, 172.16.3.0/24, and 172.16.4.0/24?
*172.16.0.0/21
*172.16.1.0/22
*172.16.0.0 255.255.255.248
*172.16.0.0 255.255.252.0

15,Refer to the exhibit. What effect does the ACL shown have on network traffic, assuming that it is correctly applied to the interface?


*All traffic to network 172.16.0.0 is denied.
*All TCP traffic is denied to and from network 172.16.0.0.
*All Telnet traffic from the 172.16.0.0 network to any destination is denied.
*All port 23 traffic to the 172.16.0.0 network is denied.
*All traffic from the 172.16.0.0 network is denied to any other network.

16,Which two statements are true regarding network convergence? (Choose two.)
*In a large network, using the EIGRP or OSPF routing protocols rather than RIPv2 may improve convergence time.
*Using STP at the core layer improves convergence time by allowing the use of redundant links between devices.
*Route summarization improves convergence time by minimizing the size of the routing table.
*A full mesh topology improves convergence time by allowing load balancing.
*ACLs can be configured to improve convergence time.

17,The network administrator is designing network connectivity for a home teleworker. The teleworker needs secure access to download and upload documents on the network file server. What network connection would be most cost efficient while still meeting the security and connectivity needs of this teleworker?
*dedicated leased line connection with a dialup backup link
*Frame Relay connection with a DSL backup link
*DSL VPN connection with a dialup backup link
*ATM connection with a DSL VPN backup link
*DSL connection with no backup link

18,Which three functions are performed at the distribution layer of the hierarchical network model? (Choose three.)
*aggregating bandwidth by concentrating multiple low-speed access links
*isolating network problems to prevent them from affecting the core layer
*allowing end users to access the local network
*summarizing routes from the access layer
*preserving bandwidth at the access layer by filtering network functions
*accelerating data transfer between links in the core layer
19,Refer to the exhibit. Which two statements correctly describe the benefits of the network access layer design shown? (Choose two.)


*If Host A sends a broadcast message, only hosts in VLAN10 receive the broadcast frame.
*If Host A attempts to transmit data at the same time as another host, only hosts in VLAN10 are affected by the collision.
*Segmenting all voice traffic on a separate VLAN facilitates QoS by allowing devices to mark the traffic originating from the voice VLAN with the highest priority.
*VLANs improve network performance by facilitating the use of route summarization.
*VLANs at the access layer help guarantee network availability by facilitating load balancing.
20,The ability to connect securely to a private network over a public network is provided by which WAN technology?
*DSL
*Frame Relay
*ISDN
*PSTN
*VPN
]]> http://learn-ccna.com/2009/12/08/cisco-ccna-discovery-4-module-1-exam100_correct/feed/ 0 CCNA 4 Module 1 V4(100%) http://learn-ccna.com/2009/08/11/ccna-4-module-1-v4100/ http://learn-ccna.com/2009/08/11/ccna-4-module-1-v4100/#comments Wed, 12 Aug 2009 02:14:43 +0000 admin http://learn-ccna.com/?p=122 learn-ccna.com

1. Which statement about WAN protocols is correct?

Most WAN protocols use HDLC or a variant of HDLC as a framing mechanism.

2. Which statement is true of the functionality of the layers in the hierarchical network model?

The distribution layer aggregates WAN connections at the edge of the campus.

3. Which WAN technology uses a fixed payload of 48 bytes and is transported across both switched and permanent virtual circuits?

ATM

4. A U.S. company requires a WAN connection used only to transfer sales data from individual stores to the home office. All transfers will occur after business hours. The required bandwidth for this connection is estimated to be less than 38 kbps. Which type of connection requires the least investment for this company?

analog dialup

5. What is an advantage of packet-switched technology over circuit-switched technology?

Packet-switched networks can efficiently use multiple routes inside a service provider network.

6. Which statement is true about data connectivity between a customer and a service provider?

The segment between the demarcation point and the central office is known as the “last mile.”

7. What are two advantages of an analog PSTN WAN connection? (Choose two.)

low cost
availability

8. What can cause a reduction in available bandwidth on a cable broadband connection?

number of subscribers

9. For digital lines, which device is used to establish the communications link between the customer equipment and the local loop?

CSU/DSU

10. At which two layers of the OSI model does a WAN operate? (Choose two.)

Physical Layer
Data Link Layer

11. A company needs a WAN connection that is capable of transferring voice, video, and data at a minimum data rate of 155 Mbps. Which WAN connection is the best choice?

ATM

12. Which statement is true about the differences between a WAN and a LAN?

A WAN often relies on the services of carriers, such as telephone or cable companies, but a LAN does not.

13. Which networking device is typically used to concentrate the dial-in and dial-out traffic of multiple users to and from a network?

access server

14. Why is the call setup time of a circuit-switched WAN implementation considered a drawback?

Data cannot be transferred until a circuit has been established.

15. What three terms are associated with ISDN PRI? (Choose three.)

circuit switching
data bearer channels
time-division multiplexing

16. Which three features are identified with Frame Relay connections? (Choose three.)
CIR
DLCI
PVC

17. Which two devices are commonly used as data communications equipment? (Choose two.)

modem
CSU/DSU

18. Which packet-switched WAN technology offers high-bandwidth connectivity capable of managing data, voice, and video all on the same infrastructure?

metro Ethernet

19. Which three WAN devices can be found in the cloud? (Choose three.)

ATM switches
core routers
Frame Relay switches

20. Which switching type will allow the communication devices in the provider network to be shared and only allocated to an individual subscriber during data transfer?

dedicated switched lines

21. What type of connectivity is established when VPNs are used from the remote site to the private network?

unnelst

22. Which term describes a device that will put data on the local loop?

DCE

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