CCNA Final Exam 4.0
(75).webp "CCNA Final Exam 4.0 - Quiz")
- 1.
What functionality do access control lists provide in the implementation of dynamic NAT on a Cisco router?
- A.
Define which addresses can be translated
- B.
Define which addresses are assigned to a NAT pool
- C.
Define which addresses are allowed out the router
- D.
Define which addresses can be accessed from the inside network
Correct Answer
A. Define which addresses can be translatedExplanation
Access control lists (ACLs) provide the functionality to define which addresses can be translated in the implementation of dynamic NAT on a Cisco router. ACLs allow network administrators to specify the specific addresses or range of addresses that are eligible for translation. By configuring ACLs, administrators can control which addresses are allowed to undergo NAT and which addresses are not. This helps in managing and controlling the translation process and ensures that only authorized addresses are translated.Rate this question:
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- 2.
Which three guidelines would help contribute to creating a strong password policy? (Choose three.)
- A.
Once a good password is created, do not change it.
- B.
Deliberately misspell words when creating passwords.
- C.
Create passwords that are at least 8 characters in length
- D.
Use combinations of upper case, lower case, and special characters.
- E.
Write passwords in locations that can be easily retrieved to avoid being locked out.
- F.
Use long words found in the dictionary to make passwords that are easy to remember.
Correct Answer(s)
B. Deliberately misspell words when creating passwords.
C. Create passwords that are at least 8 characters in length
D. Use combinations of upper case, lower case, and special characters.Explanation
The three guidelines that would contribute to creating a strong password policy are deliberately misspelling words when creating passwords, creating passwords that are at least 8 characters in length, and using combinations of upper case, lower case, and special characters. This ensures that passwords are not easily guessable and provides an added layer of security against brute-force attacks.Rate this question:
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- 3.
Refer to the exhibit. Every time the administrator reboots this router, the boot process ends in setup mode. What is a possible problem?
- A.
There is insufficient RAM for the IOS to load on this router.
- B.
A password recovery process should be done on this router.
- C.
The bootstrap version and the version of the IOS are different.
- D.
The IOS image is damaged and must be reloaded using tftpdnld.
- E.
The configuration register is set to ignore the startup configuration.
Correct Answer
E. The configuration register is set to ignore the startup configuration.Explanation
The possible problem is that the configuration register is set to ignore the startup configuration. This means that when the router reboots, it is not loading the configuration file that is stored in the startup configuration. Instead, it is going into setup mode, which is the default mode when no configuration file is found. To fix this issue, the administrator needs to change the configuration register to load the startup configuration.Rate this question:
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- 4.
Which option correctly defines the capacity through the local loop guaranteed to a customer by the service provider?
- A.
BE
- B.
DE
- C.
CIR
- D.
CBIR
Correct Answer
C. CIRExplanation
CIR stands for Committed Information Rate. It is the minimum guaranteed capacity through the local loop that a service provider offers to a customer. This means that the customer will always have access to at least this amount of bandwidth, regardless of network congestion or other factors.Rate this question:
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- 5.
Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP address from the DHCP server. The output of the debug ip dhcp server command shows "DHCPD: there is no address pool for 10.1.1.1". What is the problem?
- A.
The 10.1.1.1 address is already configured on Fa0/0.
- B.
The default router for the 10Network pool is incorrect.
- C.
The ip helper-address must be added to Fa0/0 interface.
- D.
The pool of addresses for the 10Network pool is incorrect.
Correct Answer
D. The pool of addresses for the 10Network pool is incorrect.Explanation
The problem is that the pool of addresses for the 10Network pool is incorrect. This means that there are no available IP addresses in the pool for the DHCP server to assign to the host. As a result, the host is unable to acquire an IP address from the DHCP server.Rate this question:
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- 6.
Which data link layer encapsulation protocol is used by default for serial connections between two Cisco routers?
- A.
ATM
- B.
Frame Relay
- C.
HDLC
- D.
PPP
- E.
SDLC
Correct Answer
C. HDLCExplanation
HDLC (High-Level Data Link Control) is the default data link layer encapsulation protocol used for serial connections between two Cisco routers. HDLC is a synchronous bit-oriented protocol that provides both error detection and error correction. It is simple, efficient, and widely supported by Cisco devices. HDLC is used for point-to-point connections and is the default encapsulation on Cisco serial interfaces unless otherwise specified.Rate this question:
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- 7.
Refer to the exhibit. Which statement correctly describes how Router1 processes an FTP request that enters interface s0/0/0 and is destined for an FTP server at IP address 192.168.1.5?
- A.
The router matches the incoming packet to the statement that was created by the access-list 201 deny icmp 192.168.1.0 0.0.0.255 any command, continues comparing the packet to the remaining statements in ACL 201 to ensure that no subsequent statements allow FTP, and then the router drops the packet.
- B.
The router reaches the end of ACL 101 without matching a condition and drops the packet because there is no statement that was created by the access-list 101 permit ip any any command.
- C.
The router matches the incoming packet to the statement that was created by the access-list 101 permit ip any 192.168.1.0 0.0.0.255 command and allows the packet into the router.
- D.
It matches the incoming packet to the statement that was created by the access-list 201 permit ip any any command and allows the packet into the router.
Correct Answer
C. The router matches the incoming packet to the statement that was created by the access-list 101 permit ip any 192.168.1.0 0.0.0.255 command and allows the packet into the router.Explanation
The correct answer is that the router matches the incoming packet to the statement that was created by the access-list 101 permit ip any 192.168.1.0 0.0.0.255 command and allows the packet into the router. This means that the router has a specific rule in its access control list (ACL) that permits any IP address to access the FTP server at IP address 192.168.1.5.Rate this question:
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- 8.
Compared with IDS systems, what can IPS systems do to provide further protection of computer systems?
- A.
Detect potential attacks
- B.
Stop the detected attack from executing
- C.
Update OS patches for computer systems
- D.
Scan computer systems for viruses and spyware
Correct Answer
B. Stop the detected attack from executingExplanation
IPS systems can provide further protection of computer systems by stopping the detected attack from executing. Unlike IDS systems that only detect potential attacks, IPS systems have the capability to actively intervene and prevent the attack from causing any harm to the computer systems. This proactive approach helps in minimizing the potential damage and ensuring the security of the computer systems.Rate this question:
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- 9.
Which IEEE 802.16 broadband wireless technology allows users to connect to the ISP at speeds comparable to DSL and cable?
- A.
Wi-Fi
- B.
Satellite
- C.
WiMAX
- D.
Metro Ethernet
Correct Answer
C. WiMAXExplanation
WiMAX is the correct answer because it is an IEEE 802.16 broadband wireless technology that provides high-speed internet access, comparable to DSL and cable connections. WiMAX allows users to connect to the internet wirelessly over long distances, making it a convenient option for accessing the internet in areas where wired connections are not available or feasible.Rate this question:
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- 10.
. A network administrator has changed the VLAN configurations on his network switches over the past weekend. How can the administrator determine if the additions and changes improved performance and availability on the company intranet?
- A.
Conduct a performance test and compare with the baseline that was established previously
- B.
Interview departmental secretaries and determine if they think load time for web pages has improved.
- C.
Determine performance on the intranet by monitoring load times of company web pages from remote sites
- D.
Compare the hit counts on the company web server for the current week to the values that were recorded in previous weeks.
Correct Answer
A. Conduct a performance test and compare with the baseline that was established previouslyExplanation
To determine if the VLAN configurations have improved performance and availability on the company intranet, the network administrator should conduct a performance test and compare it with the previously established baseline. This will provide objective data on the network's performance before and after the changes. By comparing the results, the administrator can identify any improvements or issues that may have occurred due to the VLAN configurations. This method allows for a quantitative analysis of the network's performance and provides a more accurate assessment than subjective opinions or anecdotal evidence.Rate this question:
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- 11.
Refer to the exhibit. What is the meaning of the term dynamic in the output of the command?
- A.
The bandwidth capability of the interface increases and decreases automatically based on BECNs
- B.
The Serial0/0/1 interface acquired 172.16.3.1 from a DHCP server.
- C.
The mapping between DLCI 100 and 172.16.3.1 was learned through Inverse ARP.
- D.
DLCI 100 will automatically adapt to changes in the Frame Relay cloud.
Correct Answer
B. The Serial0/0/1 interface acquired 172.16.3.1 from a DHCP server.Explanation
The term "dynamic" in the output of the command indicates that the IP address 172.16.3.1 was obtained by the Serial0/0/1 interface through DHCP, which means that the IP address assignment is not static or manually configured, but rather obtained automatically from a DHCP server.Rate this question:
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- 12.
Which type of ACL will permit traffic inbound into a private network only if an outbound session has already been established between the source and destination?
- A.
Extended
- B.
Reflexive
- C.
Standard
- D.
Time-based
Correct Answer
B. ReflexiveExplanation
A reflexive ACL is a type of access control list that permits inbound traffic into a private network only if an outbound session has already been established between the source and destination. This means that the ACL keeps track of the state of the connection and only allows traffic that is part of an existing session. This helps to enhance security by preventing unauthorized inbound traffic from entering the network.Rate this question:
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- 13.
Which two statements are true about IPv6 link local addresses? (Choose two.)
- A.
They begin with the 2000::/3 prefix
- B.
They begin with the FE80::/10 prefix.
- C.
They are assigned by IANA to an organization.
- D.
They must be manually configured by the administrator
- E.
They are assigned to a host by a stateless autoconfiguration process
Correct Answer(s)
A. They begin with the 2000::/3 prefix
C. They are assigned by IANA to an organization.Explanation
IPv6 link local addresses begin with the FE80::/10 prefix, not the 2000::/3 prefix. They are assigned by IANA to an organization and must be manually configured by the administrator. They are not assigned to a host by a stateless autoconfiguration process.Rate this question:
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- 14.
A company is looking for a WAN solution to connect its headquarters site to four remote sites. What are two advantages that dedicated leased lines provide compared to a shared Frame Relay solution? (choose two)
- A.
Reduced jitter
- B.
Reduced costs
- C.
Reduced latency
- D.
The ability to burst above guaranteed bandwidth
- E.
The ability to borrow unused bandwidth from the leased lines of other customers
Correct Answer(s)
A. Reduced jitter
C. Reduced latencyExplanation
Dedicated leased lines provide reduced jitter and reduced latency compared to a shared Frame Relay solution. This means that the connection will have less variation in delay and a lower overall delay, resulting in a more stable and responsive network. This can be particularly important for real-time applications such as video conferencing or VoIP, where consistent and low latency is crucial for a good user experience.Rate this question:
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- 15.
Refer to the exhibit. A network administrator is trying to connect R1 remotely to make configuration changes. Based on the exhibited command output, what will be the result when attempting to connect to R1?
- A.
Failure to connect due to Telnet not being enabled
- B.
Failure to connect due to incomplete configuration for Telnet
- C.
A successful connection and ability to make configuration changes
- D.
A successful connection but inability to make configuration changes because of the absence of an enable secret password
Correct Answer
C. A successful connection and ability to make configuration changesExplanation
The exhibited command output shows that the Telnet line is configured with "Transport input all", which means that all transport protocols (including Telnet) are allowed for incoming connections. Therefore, there will be a successful connection to R1. Additionally, there is no mention of an incomplete configuration or the absence of an enable secret password, so the ability to make configuration changes should not be affected.Rate this question:
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- 16.
What are two effective measures for securing routers? (Choose two.)
- A.
Protect all active router interfaces by configuring them as passive interfaces
- B.
Configure remote administration through VTY lines for Telnet access.
- C.
Use quotes or phrases to create pass phrases.
- D.
Disable the HTTP server service.
- E.
Enable SNMP traps.
Correct Answer(s)
A. Protect all active router interfaces by configuring them as passive interfaces
B. Configure remote administration through VTY lines for Telnet access.Explanation
Two effective measures for securing routers are protecting all active router interfaces by configuring them as passive interfaces and configuring remote administration through VTY lines for Telnet access. Configuring interfaces as passive helps to prevent unauthorized access and restricts communication to only necessary interfaces. Configuring remote administration through VTY lines for Telnet access allows for secure remote management of the router. This ensures that only authorized users can access and manage the router remotely.Rate this question:
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- 17.
An issue of response time has recently arisen on an application server. The new release of a software package has also been installed on the server. The configuration of the network has changed recently. To identify the problem, individuals from both teams responsible for the recent changes begin to investigate the source of the problem. Which statement applies to this situation?
- A.
Scheduling will be easy if the network and software teams work independently
- B.
It will be difficult to isolate the problem if two teams are implementing changes independently
- C.
Results from changes will be easier to reconcile and document if each team works in isolation.
- D.
Only results from the software package should be tested as the network is designed to accommodate the proposed software platform.
Correct Answer
B. It will be difficult to isolate the problem if two teams are implementing changes independentlyExplanation
In this situation, the issue of response time has arisen on the application server after both the software package and network configuration have been changed. To identify the problem, individuals from both teams responsible for the changes need to investigate the source. If the teams work independently and implement changes separately, it will be difficult to isolate the problem. This is because the changes made by both teams could potentially interact with each other and cause the response time issue. Therefore, collaboration and coordination between the software and network teams are necessary to effectively identify and resolve the problem.Rate this question:
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- 18.
Refer to the exhibit. From the output of the show interfaces and ping commands, at which layer of the OSI model is a fault indicated?
- A.
Application
- B.
Transport
- C.
Network
- D.
Data link
- E.
Physical
Correct Answer
C. NetworkExplanation
Based on the output of the show interfaces and ping commands, a fault is indicated at the network layer of the OSI model. This is because the show interfaces command provides information about the network interfaces, and the ping command tests the connectivity at the network layer by sending packets to a specific IP address. Therefore, any issues or faults in the network layer would affect the ability to communicate with other devices on the network.Rate this question:
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- 19.
Which technology is used to dynamically map next hop, network layer addresses to virtual circuits in a Frame Relay network?
- A.
Inverse ARP
- B.
LMI
- C.
DLCI
- D.
FECN
Correct Answer
A. Inverse ARPExplanation
Inverse ARP is the technology used to dynamically map next hop, network layer addresses to virtual circuits in a Frame Relay network. Inverse ARP allows a device to discover the Layer 3 address associated with a specific virtual circuit by sending out a broadcast request. This helps in establishing connectivity between devices in a Frame Relay network by mapping the network layer addresses to the virtual circuits.Rate this question:
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- 20.
An administrator learns of an e-mail that has been received by a number of users in the company. This e-mail appears to come from the office of the administrator. The e-mail asks the users to confirm their account and password information. Which type of security threat does this e-mail represent?
- A.
Cracking
- B.
Phishing
- C.
Phreaking
- D.
Spamming
Correct Answer
B. PhishingExplanation
Phishing is the correct answer because the e-mail is attempting to deceive users into providing their account and password information by pretending to be from a trusted source, in this case, the office of the administrator. Phishing is a type of security threat where attackers use deceptive tactics to trick individuals into revealing sensitive information or performing actions that could compromise their security.Rate this question:
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- 21.
Refer to the exhibit. Which data transmission technology is being represented?
- A.
TDM
- B.
PPP
- C.
HDLC
- D.
SLIP
Correct Answer
A. TDMExplanation
The correct answer is TDM. TDM stands for Time Division Multiplexing, which is a data transmission technology that allows multiple signals to be transmitted over a single communication channel by dividing the channel into different time slots. In TDM, each input signal is assigned a specific time slot, and the signals are transmitted sequentially in a round-robin fashion. This enables multiple signals to share the same channel without interfering with each other.Rate this question:
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- 22.
Refer to the exhibit. Results of the show vlan and show vtp status commands for switches S1 and S2 are displayed in the exhibit. VLAN 11 was created on S1. Why is VLAN 11 missing from S2?
- A.
There is a Layer 2 loop
- B.
The VTP domain names do not match.
- C.
Only one switch can be in server mode.
- D.
S2 has a higher spanning-tree priority for VLAN 11 than S1 does.
Correct Answer
B. The VTP domain names do not match.Explanation
The VTP domain names do not match. VTP (VLAN Trunking Protocol) is used to synchronize VLAN information across switches in a network. In this case, the VTP domain name on S2 is different from the VTP domain name on S1. Since the domain names do not match, VLAN 11 that was created on S1 is not being propagated to S2.Rate this question:
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- 23.
What is the result of adding the global command service password-encryption to the configuration of a router?
- A.
Line passwords are encrypted with type 7 encryption.
- B.
Enable passwords are encrypted with type 5 encryption.
- C.
All services must provide an encrypted password to function
- D.
Only encrypted messages are allowed for router communication.
Correct Answer
C. All services must provide an encrypted password to functionExplanation
Adding the global command "service password-encryption" to the configuration of a router ensures that all services must provide an encrypted password to function. This means that any passwords used for line passwords or enable passwords will be encrypted with type 7 encryption. It does not restrict router communication to only encrypted messages.Rate this question:
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- 24.
While troubleshooting a problem with an e-mail server, an administrator observes that the switch port used by the server shows "up, line protocol up". The administrator cannot ping the server. At which layer of the OSI model is the problem most likely to be found?
- A.
Application layer
- B.
Network layer
- C.
Data link layer
- D.
Physical layer
Correct Answer
B. Network layerExplanation
The problem is most likely to be found at the network layer. The fact that the switch port is showing "up, line protocol up" indicates that the physical and data link layers are functioning correctly. However, the inability to ping the server suggests a problem with network layer connectivity or configuration.Rate this question:
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.jpg "Refer to the exhibit. A network administrator is trying to connect R1 remotely to make configuration changes. Based on the exhibited command output, what will be the result when attempting to connect to R1?")
.jpg "Refer to the exhibit. From the output of the show interfaces and ping commands, at which layer of the OSI model is a fault indicated?")
.jpg "Refer to the exhibit. Which data transmission technology is being represented?")
.jpg "Refer to the exhibit. Results of the show vlan and show vtp status commands for switches S1 and S2 are displayed in the exhibit. VLAN 11 was created on S1. Why is VLAN 11 missing from S2?")
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