CCNA 1 Final Answers Version 4.0 October 2009 (41-50)

41.














Refer to the exhibit. Which logical topology best describes the exhibited network?

star

ring

point-to-point

**multiaccess

mesh

42. Which OSI layer protocol does IP rely on to determine whether packets have been lost and to request retransmission?

application

presentation

session

**transport

43.
















Refer to the exhibit. Host A attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured with the source MAC address 0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address 192.168.7.5, and the destination IP address is 192.168.219.24. At which point in the network was this packet captured?

leaving host A

leaving ATL

**leaving Dallas

leaving NYC

44.











Refer to the exhibit. Assume all devices are using default configurations. How many subnets are required to address the topology that is shown?

1

**3

4

5

7

45. Which of the following OSI layers offers reliable, connection-oriented data communication services?

application

presentation

session

**transport

network

46.




Refer to the exhibit. Each media link is labeled. What type of cable should be used to connect the different devices?

Connection 1 - rollover cable
Connection 2 - straight-through cable
Connection 3 - crossover cable

Connection 1 - crossover cable
Connection 2 - rollover cable
Connection 3 - crossover cable

Connection 1 - straight-through cable
Connection 2 - crossover cable
Connection 3 - crossover cable

**Connection 1 - straight-through cable
Connection 2 - crossover cable
Connection 3 - straight-through cable

Connection 1 - crossover cable
Connection 2 - straight-through cable
Connection 3 - crossover cable

47.











Refer to the exhibit. What is the correct destination socket number for a web page request from Host A to the web server?

00-08-a3-b6-ce-46

**198.133.219.25:80

http://www.cisco.com

C 198.133.219.0/24 is directly connected, FastEthernet0/0

48.













Refer to the exhibit. What two facts can be determined from the information that is given? (Choose two.)

This exchange is part of the three-way handshake.

The source port indicates that a Telnet session has been initiated.

The data is flowing from server to client.

**The destination port indicates that an HTTP session has been initiated.

**The data listed is associated with the transport layer.

The source port does not support communication with the destination port that is listed.

49.












Refer to the exhibit. What function does router RT_A need to provide to allow Internet access for hosts in this network?

**address translation

DHCP services

ftpd

web server

50. Which type of media is immune to EMI and RFI? (Choose two.)

10 Base-T

10 Base-2

10 Base-5

**100 Base-FX

100 Base TX

**1000 Base LX

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CCNA 1 Final Answers Version 4.0 October 2009 (31-40)

31.















Refer to the exhibit. Which set of devices contains only intermediary devices?

**A, B, D, G

A, B, E, F

C, D, G, I

G, H, I, J

32.

















Refer to the exhibit. What is required on host A for a network technician to create the initial configuration on RouterA?

a FTP client

a telnet client

**a terminal emulation program

a web browser

33.






Refer to the exhibit. Which two statements describe the information that is represented in the header? (Choose two.)

This is a server response.

The UDP protocol is being used.

**The destination port indicates a Telnet session.

**The return segment will contain a source port of 23.

The next session originated from the client of this session will use the source port number 13358.

34.














Refer to the exhibit. With the router running NAT, what IP addresses can be applied to the computer to allow access to the Internet? (Choose three.)

192.168.18.38

192.168.18.48

**192.168.18.49

**192.168.18.52

**192.168.18.59

192.168.18.63

35. Which combination of network id and subnet mask correctly identifies all IP addresses from 172.16.128.0 through 172.16.159.255?

172.16.128.0 255.255.255.224

172.16.128.0 255.255.0.0

**172.16.128.0 255.255.192.0

172.16.128.0 255.255.224.0

172.16.128.0 255.255.255.192

36. During the encapsulation process, which identifiers are added at the transport layer?

two networks routing the packets

**two applications communicating the data

two hosts at either end of the communication

two nodes on the local network exchanging the frame

37.



















Refer to the exhibit. A technician is working on a network problem that requires verification of the router LAN interface. What address should be pinged from this host to confirm that the router interface is operational?

127.0.0.1

192.168.64.196

**192.168.254.1

192.168.254.9

192.168.254.254

38. What is true regarding network layer addressing? (Choose three.)

uses a flat structure

prevent broadcasts

**heirarchical

**uniquely identifies each host

48 bits in length

**contains a network portion

39. The Layer 4 header contains which type of information to aid in the delivery of data?

**service port number

host logical address

device physical address

virtual connection identifier

40.














Refer to the exhibit. What three statements are true about the IP configuration that is shown? (Choose three.)

**The address that is assigned to the computer represents private addressing.

**The computer is unable to communicate outside of the local network.

The network of this computer can have 126 hosts.

**The prefix of the computer address is /27.

The IP address that is assigned to the computer is routable on the Internet.

The IP address that is assigned to the computer is a broadcast address.

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CCNA 1 Final Answers Version 4.0 October 2009 (21-30)

21. Which two functions of the OSI model occur at layer two? (Choose two.)

**physical addressing

encoding

routing

cabling

**media access control

22. Due to a security violation, the router passwords must be changed. What information can be learned from the following configuration entries? (Choose two.)

Router(config)# line vty 0 3
Router(config-line)# password c13c0
Router(config-line)# login

The entries specify three Telnet lines for remote access.

**The entries specify four Telnet lines for remote access.

The entries set the console and Telnet password to "c13c0".

Telnet access will be denied because the Telnet configuration is incomplete.

**Access will be permitted for Telnet using "c13c0" as the password.

23.


















Refer to the exhibit. When computer A sends a frame to computer D, what computers receive the frame?

**only computer D

only computer A and computer D

only computer B, computer C, and computer D

all computers

24.











Refer to the exhibit. What two facts can be determined about the exhibited topology? (Choose two.)

**A single broadcast domain is present

Two logical address ranges are required.

Three broadcast domains are shown.

Four networks are needed.

**Five collision domains exist.

25. When must a router serial interface be configured with the clock rate command?

when the interface is functioning as a DTE device

when the interface timers have been cleared

when the connected DTE device is shut down

**when the interface is functioning as a DCE device

26. Which three statements characterize the transport layer protocols? (Choose three.)

**TCP and UDP port numbers are used by application layer protocols.

TCP uses port numbers to provide reliable transportation of IP packets.

UDP uses windowing and acknowledgments for reliable transfer of data.

**TCP uses windowing and sequencing to provide reliable transfer of data.

**TCP is a connection-oriented protocol. UDP is a connectionless protocol.

27. Which range of port numbers are reserved for services that are commonly used by applications that run on servers?

0 to 255

**0 to 1023

1024 to 49151

49152 to 65535

28. A technician is asked to secure the privileged EXEC mode of a switch by requiring a password. Which type of password would require this login and be considered the most secure?

console

enable

**enable secret

VTY

29. As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?

255.255.0.0

255.255.248.0

255.255.252.0

**255.255.254.0

255.255.255.0

255.255.255.128

30.









Refer to the exhibit. What does the IP address 192.168.33.2 represent?

The host's default gateway.

The host's IP address.

**The host's primary domain name server.

The IP address of the website resolver1.mooki.local.

The IP address of the host's homepage.

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CCNA 1 Final Answers Version 4.0 October 2009 (11-20)

11.












Examine the graphic with current configurations. Host A in the Clerical offices failed and was replaced. Although a ping to 127.0.0.1 was successful, the replacement computer can not access the company network. What is the likely cause of the problem?

IP address incorrectly entered

network cables unplugged

**subnet mask incorrectly entered

network card failure

12.











Refer to the exhibit. The diagram represents the process of sending email between clients. Select the list below that correctly identifies the component or protocol used at each numbered stage of the diagram.

1.MUA 2.MDA 3.MTA 4.SMTP 5.MTA 6.POP 7.MDA 8.MUA

1.MUA 2.POP 3.MDA 4.SMTP 5.MTA 6.MDA 7.SMTP 8.MUA

1.MUA 2.POP 3.SMTP 4.MDA 5.MTA 6.SMTP 7.POP 8.MUA

1.MDA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MUA 7.POP 8.MDA

**1.MUA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MDA 7.POP 8.MUA

13.















Refer to the exhibit. On the basis of the IP configuration that is shown, what is the reason that Host A and Host B are unable to communicate outside the local network?

Host A was assigned a network address.

Host B was assigned a multicast address.

Host A and Host B belong to different networks.

**The gateway address was assigned a broadcast address.

14.What are three characteristics of CSMA/CD? (Choose three.)

Devices can be configured with a higher transmission priority.

A jam signal indicates that the collision has cleared and the media is not busy.

**A device listens and waits until the media is not busy before transmitting.

The device with the electronic token is the only one that can transmit after a collision.

**All of the devices on a segment see data that passes on the network medium.

**After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired.

15.












Refer to the exhibit. The tracert command is initiated from PC1 to the destination PC4. Which device will send a response to the initial packet from PC1?

**London

Paris

Athens

Ankara

PC4

16.











Refer to the exhibit. A router, whose table is shown, receives a packet that is destined for 192.168.1.4. How will router treat the packet?

The packet will be dropped.

The packet will be forwarded via FastEthernet 0/0.

**The packet will be forwarded to the destination host.

The packet will be forwarded to the 192.168.1.3 next-hop address.

17. Which password is automatically encrypted when it is created?

vty

aux

console

**enable secret

enable password

18. When connectionless protocols are implemented at the lower layers of the OSI model, what are usually used to acknowledge the data receipt and request the retransmission of missing data?

connectionless acknowledgements

**upper-layer connection-oriented protocols

Network layer IP protocols

Transport layer UDP protocols

19.









Refer to the exhibit. A network administrator remotely accesses the CLI of RouterB from PC1. Which two statements are true about the application layer protocol that is used to make this connection? (Choose two.)

The data is encrypted.

**The connection type is called a VTY session.

A server process is running on PC1.

A GET request is sent to RouterB.

**The application name is the same for the service, protocol, and client.

20. A routing issue has occurred in you internetwork. Which of the following type of devices should be examined to isolate this error?

access point

host

hub

**router

switch

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CCNA 1 Final Answers Version 4.0 October 2009 (1-10)

1.









Refer to the exhibit. The network containing router B is experiencing problems. A network associate has isolated the issue in this network to router B? What action can be preformed to correct the network issue?

issue the ip address command on interface FastEthernet 0/0

**issue the no shutdown command on interface FastEthernet 0/1

issue the clock rate command on interface Serial 0/0/0

issue the description command on interface Serial 0/0/1

2. Which three IPv4 addresses represent a broadcast for a subnet? (Choose three.)

**172.16.4.63 /26

172.16.4.129 /26

**172.16.4.191 /26

172.16.4.51 /27

**172.16.4.95 /27

172.16.4.221 /27

3. In a Cisco IOS device, where is the startup-configuration file stored?

Flash

**NVRAM

RAM

ROM

4. Which prompt represents the appropriate mode used for the copy running-config startup-config command ?

Switch-6J>

**Switch-6J#

Switch-6J(config)#

Switch-6J(config-if)#

Switch-6J(config-line)#

5. Which of the following are the address ranges of the private IP addresses? (Choose three.)

**10.0.0.0 to 10.255.255.255

200.100.50.0 to 200.100.25.255

150.150.0.0 to 150.150.255.255

**172.16.0.0 to 172.31.255.255

**192.168.0.0 to 192.168.255.255

127.16.0.0 to 127.31.255.255

6.

















Refer to the exhibit. Cable 1 and cable 2 have the ends wired for specific physical layer requirements. The table lists each segment by number and the cable which has been installed by the network technician between the network components on that segment. From the data given, which segments have the correct cable installed? (Choose three.)

**segment1

segment2

**segment3

**segment4

segment5

7. A PC can not connect to any remote websites, ping its default gateway, or ping a printer that is functioning properly on the local network segment. Which action will verify that the TCP/IP stack is functioning correctly on this PC?

Use the ipconfig /all command at the host’s command prompt.

*Use the ping 127.0.0.1 command at the command prompt.

Use the traceroute command at the command prompt to identify any failures on the path to the gateway.

Use FTP to check for connectivity to remote sites.

Download a troubleshooting tool from the PC manufacturer's website.

8.









Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A?

IP address: 192.168.100.19; Subnet Mask: 255.255.255.248; Default Gateway: 192.16.1.2

**IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17

IP address: 192.168.100.21; Subnet Mask: 255.255.255.248; Default Gateway: 192.168.100.18

IP address: 192.168.100.22; Subnet Mask: 255.255.255.240; Default Gateway: 10.1.1.5

IP address: 192.168.100.30; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.1.1

IP address: 192.168.100.31; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.18

9.













Refer to the exhibit. Host A is transmitting data to host B. What addresses will host A use to for the destination IP and MAC addresses in this communication?

Destination MAC: BBBB:BBBB:BBBB Destination IP: 172.22.0.62

Destination MAC: DDDD:DDDD:DDDD Destination IP: 172.22.0.75

Destination MAC: EEEE:EEEE:EEEE Destination IP: 172.22.0.62

Destination MAC: BBBB:BBBB:BBBB Destination IP: 172.22.0.75

**Destination MAC: EEEE:EEEE:EEEE Destination IP: 172.22.0.75

Destination MAC: DDDD:DDDD:DDDD Destination IP: 172.22.0.94

10.











Refer to the exhibit. A student has wired each end of a CAT 5e cable as shown. What is the result? (Choose two.)

The cable is unusable and must be rewired.

The cable is suitable for use as a Gigabit Ethernet straight-through.

**The cable is suitable for use as a Fast Ethernet crossover.

The cable is suitable for use as a rollover cable.

The cable is suitable for use as a Gigabit Ethernet crossover.

**The cable is suitable for use between two 100 Mbps Auto-MDIX capable switches.

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CCNA Discovery 2 Chapter 8 V4.1

CCNA Discovery Working at a Small-to-Medium Business or ISP (Version 4.1) Chapter 8 With 100% Accurate Answers

1. Which AAA service reduces IT operating costs by providing detailed reporting and monitoring of network user behavior, and also by keeping a record of every access connection and device configuration change across the network?

authentication
accreditation
**accounting
authorization


2. Which three items are normally included when a log message is generated by a syslog client and forwarded to a syslog server? (Choose three.)

**date and time of message
**ID of sending device
length of message
**message ID
checksum field
community ID


3. What is the advantage of using WPA to secure a wireless network?

It uses a 128-bit pre-shared hexadecimal key to prevent unauthorized wireless access.
**It uses an advanced encryption key that is never transmitted between host and access point.
It is supported on older wireless hardware, thus providing maximum compatibility with enterprise equipment.
It requires the MAC address of a network device that is requesting wireless access to be on a list of approved MAC addresses.


4. A company wants to configure a firewall to monitor all channels of communication and allow only traffic that is part of a known connection. Which firewall configuration should be deployed?

packet filtering
proxy
**stateful packet inspection
stateless packet inspection


5. A server log includes this entry: User student accessed host server ABC using Telnet yesterday for 10 minutes. What type of log entry is this?

authentication
authorization
**accounting
accessing


6. What two measures help to verify that server backups have been reliably completed? (Choose two.)

**reviewing backup logs
**performing trial backups
performing full backups only
replacing tape backup with hard disk-based backup
using an autoloader when backups require more than one tape


7. Which means of communication does an SNMP network agent use to provide a network management station with important but unsolicited information?

query
broadcast
ICMP ping
**trap
poll


8. Which three protocols are used for in-band management? (Choose three.)

FTP
**HTTP
**SNMP
**Telnet
TFTP
DHCP


9. A hacker has gained access to sensitive network files. In analyzing the attack, it is found that the hacker gained access over a wireless segment of the network. It is further discovered that the only security measure in place on the wireless network is MAC Address Filtering. How is it likely that the hacker gained access to the network?

The hacker used a software tool to crack the shared hexadecimal wireless key.
**The hacker obtained the MAC address of a permitted host, and cloned it on his wireless laptop NIC.
The attacker mounted a denial of service attack to overwhelm the firewall before penetrating the wireless LAN.
The hacker gained wireless access to the MAC address database and added his own MAC address to the list of permitted addresses.


10. A network administrator is assigning network permissions to new groups of users and employing the principle of least privilege. Which two actions should the administrator take? (Choose two.)

**Provide users with only the access to resources required to do their jobs.
**Provide the minimum level of permissions required for users to do their jobs.
Remove all permissions from the users and grant permissions as they are requested.
Allow users to decide how much permission they need to accomplish their job tasks.
Provide full access to the users and gradually remove privileges over time.


11. Which three protocols describe methods that can be used to secure user data for transmission across the internet? (Choose three.)

SMTP
**IPSEC
**SSL
**HTTPS
FTP
TFTP


12. Which benefit does SSH offer over Telnet when remotely managing a router?

**encryption
TCP usage
authorization
connection using six VTY lines


13. Which of the following does SNMP use to hold information collected about the network?

network management station
network management database
**management information base
database information agent


14. What are two potential problems with using tape media to back up server data? (Choose two.)

Tape is not a cost-effective means of backing up data.
Data tapes are difficult to store offsite.
**Data tapes are prone to failure and must be replaced often.
**Tape drives require regular cleaning to maintain reliability.
Backup logs are not available with tape backup solutions.


15. What is the term for the public network between the boundary router and the firewall?

"clean" LAN
intranet
**DMZ
extranet


16. Which two characteristics of network traffic are being monitored if a network technician configures the company firewall to operate as a packet filter? (Choose two.)

applications
physical addresses
packet size
**ports
**protocols


17. When is the use of out-of-band network management necessary?

when a server needs to be monitored across the network
**when the management interface of a device is not reachable across the network
when enhanced monitoring features are required to gain an overall view of the entire network
when it is desirable to use the information that is provided by SNMP


18. What network layer security protocol can secure any application layer protocol used for communication?

HTTPS
IMAP
FTPS
**IPSEC
TLS


19. Before a technician upgrades a server, it is necessary to back up all data. Which type of backup is necessary to ensure that all data is backed up?

daily
differential
**full
incremental
partial


20. What AAA component assigns varying levels of rights to users of network resources?

auditing
accounting
**authorization
access control
authentication
acknowledgement

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CCNA Discovery 2 Chapter 7 V4.1

CCNA Discovery Working at a Small-to-Medium Business or ISP (Version 4.1) Chapter 7 With 100% Accurate Answers

1. Which two statements are true about the OSI and TCP/IP models? (Choose two.)

The two bottom layers of the TCP/IP model make up the bottom layer of the OSI model.
The TCP/IP model is a theoretical model and the OSI model is based on actual protocols.
**The OSI network layer is comparable to the Internet layer of the TCP/IP model.
The TCP/IP model specifies protocols for the physical network interconnection.
**The TCP/IP model is based on four layers and the OSI model is based on seven layers.


2. To meet customer expectations, an ISP must guarantee a level of service that is based on what two factors? (Choose two.)

accessibility
adaptability
**availability
**reliability
scalability


3. User1 is sending an e-mail to User2@cisco.com. What are two characteristics of the process of sending this data? (Choose two.)

It utilizes TCP port 110.
A TCP connection is established directly between the User1 and User2 client computers in order to send the e-mail message.
**It utilizes a store and forward process.
The same application layer protocol is used to send the e-mail and retrieve it from the destination server.
**SMTP is used to send the e-mail message to the mail servers.


4. Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN message to begin session establishment. What happens next?

Host1 sends an ACK message to Host2.
Host1 sends a SYN message to Host2.
Host1 sends a SYN-ACK message to Host2.
Host2 sends an ACK message to Host1.
Host2 sends a SYN message to Host1.
**Host2 sends a SYN-ACK message to Host1.


5. What are three characteristics of network reliability? (Choose three.)

**Redundant hardware provides enhanced reliability.
Reliability is measured as a percent.
Reliability is the responsibility of the ISP customers.
**Fault tolerance is a measure of reliability.
**The longer the MTBF, the greater the reliability.


6. Which two statements describe the FTP protocol? (Choose two.)

It uses well-known port 23.
The protocol interpreter is responsible for the data transfer function.
**In passive data connections, the FTP client initiates the transfer of data.
**It requires two connections between client and server.
FTP servers open a well-known port on the client machine.


7. What is the function of the TCP three-way handshake?

It enables the synchronization of port numbers between source and destination hosts.
It immediately triggers the retransmission of lost data.
**It synchronizes both ends of a connection by allowing both sides to agree upon initial sequence numbers.
It identifies the destination application on the receiving host.


8. What are three characteristics of HTTPS? (Choose three.)

It uses a different client request-server response process than HTTP uses.
It specifies additional rules for passing data between the application and data link layers.
**It supports authentication.
It allows more simultaneous connections than HTTP allows.
**It encrypts packets with SSL.
**It requires additional server processing time.


9. Which DNS zone resolves an IP address to a qualified domain name?

dynamic lookup
forward lookup
resolution lookup
**reverse lookup


10. What type of update allows client computers to register and update their resource records with a DNS server whenever changes occur?

**dynamic
zone transfer
local recursive query
root domain query
top-level domain query


11. Refer to the exhibit. Which two statements are true about this file? (Choose two.)

If the gateway address changes, the file will be updated dynamically.
**The command ping fileserv will use IP address 172.16.5.10.
**If the ping www.cisco.com command is issued, the file will be checked for the Cisco web server IP address before DNS is queried.
The file must be created by the user if it is to be used by a workstation.
Name to IP address mappings are added to the file after they are received from DNS.


12. Which two tasks are the responsibility of the local DNS server? (Choose two.)

maintaining a large number of cached DNS entries
maintaining the ISP server
**mapping name-to-IP addresses for internal hosts
**forwarding name resolution requests to a caching-only server
forwarding all name resolution requests to root servers on the Internet


13. What are three unique characteristics of UDP? (Choose three.)

connection oriented
full-duplex operation
**low overhead
**no flow control
**no error-recovery function
reliable transmission


14. A manufacturing company is looking into subscribing to services from a new ISP. The company requires hosted world wide web, file transfer, and e-mail services. Which three protocols represent the key application services that are required by the company? (Choose three.)

**FTP
**HTTP
ICMP
PPP
Telnet
**SMTP


15. Which two options correctly match protocol and well-known port number? (Choose two.)

DNS - 25
**FTP - 110
HTTP - 80
POP3 - 25
**SMTP - 25


16. Within TCP, what combination makes up a socket pair?

source port with destination port
source IP address with destination port
source IP address and destination IP address
**source IP address and port with a destination IP address and port


17. Which protocol is used to send e-mail, either from a client to a server or from a server to another server?

SNMP
FTP
**SMTP
HTTPS


18. Refer to the exhibit. The PC is requesting HTTP data from the server. What is a valid representation of source and destination sockets for this request?

Source - 192.168.1.17:80 ; Destination - 192.168.2.39:80
Source - 192.168.1.17:80 ; Destination - 192.168.2.39:1045
**Source - 192.168.1.17:1045 ; Destination - 192.168.2.39:80
Source - 192.168.1.17:1045 ; Destination - 192.168.2.39:1061


19. What type of DNS server is typically maintained by an ISP?

**caching-only
root
second-level
top-level


20. A client is communicating with a server on a different segment of the network. How does the server determine what service is being requested by the client?

The server will apply the default service configured in directory services.
The server will use ARP to discover the appropriate service from the local router.
The server will send a request to the client asking for the appropriate service.
**The server will determine the appropriate service from the destination port field.


21. When a host is communicating with multiple applications on the same server at the same time, which of the following will have the same value for each session? (Choose two.)

**IP address
**MAC address
session number
sequence number

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