A Quiz On CCENT/CCNA Icnd1 Chapters 16 + 17

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.