A Quiz On CCENT/CCNA Icnd1 Chapters 16 + 17
Are you a student taking up CCENT/CCNA Icnd1? In order to improve your retention power for the chapters you have covered we have prepared a series of tests, this one covers last week, which is chapter 2 and 3. Give it a shot and keep an eye out for the quizzes for the following chapters.
- 1.
Which of the following standards has a limit of 18,000 feet for the length of the local loop?
- A.
ADSL
- B.
Analog modems
- C.
ISDN
- D.
Cable Internet service
Correct Answer
A. ADSLExplanation
ADSL (Asymmetric Digital Subscriber Line) is the correct answer because it is a technology that allows high-speed data transmission over existing copper telephone lines. The local loop refers to the physical connection between the customer's premises and the telephone exchange. ADSL has a limit of 18,000 feet for the length of the local loop, beyond which the signal degrades significantly. This limitation is due to the nature of the technology and the need for a strong and stable signal for high-speed data transmission. Analog modems, ISDN, and Cable Internet service do not have the same specific limitation.Rate this question:
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- 2.
Which of the following is true regarding the location and purpose of a DSLAM?
- A.
Typically used at a home or small office to connect the phone line to a DSL router
- B.
Typically used at a home or small office instead of a DSL router
- C.
Typically used inside the telco’s CO to prevent any voice traffic from reaching the ISP’s router
- D.
Typically used inside the telco’s CO to separate the voice traffic from the data traffic
Correct Answer
D. Typically used inside the telco’s CO to separate the voice traffic from the data trafficExplanation
A DSLAM (Digital Subscriber Line Access Multiplexer) is typically used inside the telco's CO (Central Office) to separate the voice traffic from the data traffic. This means that the DSLAM acts as a gateway, allowing the voice traffic to be sent to the telephone network while directing the data traffic to the ISP's router. By separating the two types of traffic, the DSLAM ensures that voice calls and data transmissions do not interfere with each other, optimizing the performance and quality of both services.Rate this question:
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- 3.
Which of the following remote-access technologies support specifications that allow both symmetric speeds and asymmetric speeds?
- A.
Analog modems
- B.
WWW
- C.
DSL
- D.
Cable modems
Correct Answer(s)
A. Analog modems
C. DSLExplanation
Analog modems and DSL both support specifications that allow for both symmetric speeds and asymmetric speeds. Analog modems use a traditional telephone line to transmit data and can achieve both symmetric and asymmetric speeds depending on the technology used. DSL, on the other hand, uses existing telephone lines to provide high-speed internet access and also supports both symmetric and asymmetric speeds.Rate this question:
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- 4.
Which of the following remote-access technologies, when used to connect to an ISP, is considered to be an “always on” Internet service?
- A.
Analog modems
- B.
DSL
- C.
Cable modems
- D.
All of these answers are correct.
Correct Answer(s)
B. DSL
C. Cable modemsExplanation
DSL and cable modems are considered to be "always on" Internet services when used to connect to an ISP. This means that the connection is constantly available and does not require manual dialing or establishing a connection each time. Analog modems, on the other hand, are not "always on" as they require dialing and establishing a connection each time they are used. Therefore, the correct answer is DSL and cable modems.Rate this question:
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- 5.
For a typical Internet access router, using either cable or DSL, which of the following does the router typically do on the router interface connected to the LAN with the PCs in the small or home office?
- A.
Acts as a DHCP server
- B.
Acts as a DHCP client
- C.
Performs NAT/PAT for the source address of packets that exit the interface
- D.
Acts as DNS server
Correct Answer
A. Acts as a DHCP serverExplanation
A typical Internet access router, using either cable or DSL, acts as a DHCP server on the router interface connected to the LAN with the PCs in the small or home office. This means that the router assigns IP addresses to the PCs on the LAN, allowing them to communicate with other devices on the network and access the internet. By acting as a DHCP server, the router simplifies the network configuration process for the users, as they don't have to manually assign IP addresses to each device.Rate this question:
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- 6.
For a typical Internet access router, using either cable or DSL, which of the following does the router typically do on the router interface connected toward the Internet?
- A.
Acts as a DHCP server
- B.
Acts as a DHCP client
- C.
Performs NAT/PAT for the source address of packets that exit the interface
- D.
Acts as DNS server
Correct Answer(s)
B. Acts as a DHCP client
C. Performs NAT/PAT for the source address of packets that exit the interfaceExplanation
A typical Internet access router, using either cable or DSL, typically acts as a DHCP client on the router interface connected toward the Internet. This means that it obtains an IP address and other network configuration information from the ISP's DHCP server. Additionally, the router performs NAT/PAT for the source address of packets that exit the interface. This allows multiple devices on the local network to share a single public IP address when communicating with the Internet.Rate this question:
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- 7.
This question examines a home-based network with a PC, a DSL router, and a DSL line. The DSL router uses typical default settings and functions. The PC connected to the router has IP address 10.1.1.1. This PC opens a browser and connects to the www.cisco.com web server. Which of the following are true in this case?
- A.
The web server can tell it is communicating with a host at IP address 10.1.1.1.
- B.
The PC learns the IP address of the www.cisco.com web server as a public IP address.
- C.
The 10.1.1.1 address would be considered an inside local IP address.
- D.
The 10.1.1.1 address would be considered an inside global IP address.
Correct Answer(s)
B. The PC learns the IP address of the www.cisco.com web server as a public IP address.
C. The 10.1.1.1 address would be considered an inside local IP address.Explanation
The PC learns the IP address of the www.cisco.com web server as a public IP address because when the PC connects to the web server, it receives the public IP address of the server. The 10.1.1.1 address would be considered an inside local IP address because it is the private IP address assigned to the PC within the home-based network.Rate this question:
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- 8.
Routers R1 and R2 connect using a leased line, with both routers using their respective Serial 0/0 interfaces. The routers can currently route packets over the link, which uses HDLC. Which of the following commands would be required to migrate the configuration to use PPP?
- A.
Encapsulation ppp
- B.
No encapsulation hdlc
- C.
Clock rate 128000
- D.
Bandwidth 128000
Correct Answer
A. Encapsulation pppExplanation
To migrate the configuration to use PPP, the "encapsulation ppp" command is required. This command changes the encapsulation protocol from HDLC to PPP, allowing the routers to communicate using PPP. The other commands mentioned, "no encapsulation hdlc", "clock rate 128000", and "bandwidth 128000" are not necessary for this migration and are unrelated to changing the encapsulation protocol.Rate this question:
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- 9.
Routers R1 and R2 have just been installed in a new lab. The routers will connect using a back-to-back serial link, using interface serial 0/0 on each router. Which of the following is true about how to install and configure this connection?
- A.
If the DCE cable is installed in R1, the clock rate command must be configured on R2’s serial interface.
- B.
If the DTE cable is installed in R1, the clock rate command must be configured on R2’s serial interface.
- C.
If the clock rate 128000 command is configured on R1, the bandwidth 128 command must be configured on R2.
- D.
None of the answers are correct.
Correct Answer
B. If the DTE cable is installed in R1, the clock rate command must be configured on R2’s serial interface.Explanation
If the DTE cable is installed in R1, it means that R1 is acting as the Data Terminal Equipment (DTE) and R2 is acting as the Data Communications Equipment (DCE). In this scenario, the clock rate command must be configured on R2's serial interface. This is because the DCE device is responsible for providing the clocking signal in a back-to-back serial connection. By configuring the clock rate command on R2, it ensures that the clocking signal is properly synchronized between the two routers.Rate this question:
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- 10.
Two brand new Cisco routers have been ordered and installed in two different sites, 100 miles apart. A 768-kbps leased line has been installed between the two routers. Which of the following commands is required on at least one of the routers in order to forward packets over the leased line, using PPP as the data link protocol?
- A.
No encapsulation hdlc
- B.
Encapsulation ppp
- C.
Clock rate 768000
- D.
Bandwidth 768
- E.
Description this is the link
Correct Answer
B. Encapsulation pppExplanation
The command "encapsulation ppp" is required on at least one of the routers in order to forward packets over the leased line, using PPP as the data link protocol. PPP (Point-to-Point Protocol) is a protocol used to establish a direct connection between two network devices. By specifying "encapsulation ppp", the router will use PPP to encapsulate the packets and send them over the leased line. This ensures that the packets are properly formatted and transmitted between the two routers.Rate this question:
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- 11.
When configuring a DHCP server on an Internet access router using SDM, which of the following settings is typically configured on the Internet access router?
- A.
The MAC addresses of the PCs on the local LAN
- B.
The IP address of the ISP’s router on the common cable or DSL link
- C.
The range of IP addresses to be leased to hosts on the local LAN
- D.
The DNS server IP address(es) learned via DHCP from the ISP
Correct Answer(s)
C. The range of IP addresses to be leased to hosts on the local LAN
D. The DNS server IP address(es) learned via DHCP from the ISPExplanation
When configuring a DHCP server on an Internet access router using SDM, the range of IP addresses to be leased to hosts on the local LAN is typically configured on the router. This allows the router to assign IP addresses to devices on the local network. Additionally, the DNS server IP address(es) learned via DHCP from the ISP are also typically configured on the router. This ensures that the devices on the local network can resolve domain names to IP addresses and access the internet properly.Rate this question:
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- 12.
When configuring an access router with SDM, to use DHCP client services to learn an IP address from an ISP, and configure PAT at the same time, which of the following is true?
- A.
The SDM configuration wizard requires PAT to be configured if the DHCP client function has been chosen to be configured.
- B.
The SDM configuration wizard considers any interfaces that already have IP addresses configured as candidates to become inside interfaces for PAT.
- C.
The SDM configuration wizard assumes the interface on which DHCP client services have been enabled should be an inside interface.
- D.
None of the answers are correct.
Correct Answer
B. The SDM configuration wizard considers any interfaces that already have IP addresses configured as candidates to become inside interfaces for PAT.Explanation
The correct answer is "The SDM configuration wizard considers any interfaces that already have IP addresses configured as candidates to become inside interfaces for PAT." This means that if an interface already has an IP address configured, it can be used as an inside interface for Port Address Translation (PAT) when configuring an access router with SDM. This allows the router to translate multiple private IP addresses to a single public IP address.Rate this question:
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- 13.
Which of the following is true about the configuration process using SDM?
- A.
SDM uses an SSH connection via the console or an IP network to configure a router.
- B.
SDM uses a web interface from the IP network or from the console.
- C.
SDM loads configuration commands into a router at the end of each wizard (after the user clicks the Finish button), saving the configuration in the running-config and startup-config files.
- D.
None of these answers are correct.
Correct Answer
D. None of these answers are correct.Explanation
The correct answer is "None of these answers are correct." This means that none of the options provided accurately describe the true process of configuring a router using SDM.Rate this question:
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- 14.
Which of the following are common problems when configuring a new Internet access router’s Layer 3 features?
- A.
Omitting commonly used but optional information from the DHCP server features—for example, the IP address(es) of the DNS server(s)
- B.
Setting the wrong interfaces as the NAT inside and outside interfaces
- C.
Forgetting to configure the same routing protocol that the ISP uses
- D.
Forgetting to enable CDP on the Internet-facing interface
Correct Answer(s)
A. Omitting commonly used but optional information from the DHCP server features—for example, the IP address(es) of the DNS server(s)
B. Setting the wrong interfaces as the NAT inside and outside interfacesExplanation
The common problems when configuring a new Internet access router's Layer 3 features include omitting commonly used but optional information from the DHCP server features, such as the IP address(es) of the DNS server(s). This can lead to connectivity issues as the router won't be able to resolve domain names. Another common problem is setting the wrong interfaces as the NAT inside and outside interfaces. This can result in incorrect network address translation, leading to communication problems between the internal and external networks.Rate this question:
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Mar 22, 2023Quiz Edited by
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Aug 24, 2009Quiz Created by
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