CCNA Protocol Practice Quiz

The problem is most likely occurring in the physical layer of the OSI model. This layer is responsible for the physical transmission of data, including the hardware components such as cables, connectors, and network devices. In this case, the fact that the lights and fan on the router are not operational suggests a physical issue with the router itself, which is preventing it from functioning properly.

HTTPS should be used to transfer credit card information from customers to the company web server. HTTPS is a secure protocol that encrypts data during transmission, ensuring that sensitive information such as credit card details cannot be intercepted or accessed by unauthorized individuals. This protocol utilizes SSL/TLS encryption to establish a secure connection between the client (customer) and the server (company), providing confidentiality and integrity of the data being transmitted.

The purpose of the routing process is to select the paths that are used to direct traffic to destination networks. Routing is responsible for determining the most efficient path for data packets to travel from the source to the destination network. It involves analyzing the network topology, considering factors such as network congestion and available bandwidth, and making decisions on how to forward the packets to their intended destination. By selecting the appropriate paths, routing ensures that data reaches its destination in a timely and efficient manner.

To allow a request to be sent to http://www.cisco.com, the minimum configurations that must be set on a host are the DNS Server, IP address, subnet mask, and default gateway. The DNS Server is necessary to resolve the domain name "www.cisco.com" to its corresponding IP address. The IP address, subnet mask, and default gateway are essential for establishing network connectivity and routing the request to the destination host. The WINS Server and NetBIOS are not required for sending a request to a website via HTTP.

The correct command to configure the router name is "Router(config)# hostname Boise". This command is used in global configuration mode to set the hostname of the router to "Boise".

The technician will have the user verify the IP address, subnet, and gateway settings using ipconfig on the PC. This step is important because it helps determine if there is an issue with the network configuration on the user's PC. By checking the IP address, subnet, and gateway settings, the technician can identify any misconfigurations that may be causing the inability to access the Internet. This step is part of the bottom-up troubleshooting approach, where the technician starts with the basic network connections and gradually moves towards more complex troubleshooting steps.

BGP (Border Gateway Protocol) is the most commonly used exterior routing protocol. It is used to exchange routing information between different autonomous systems (AS) on the internet. BGP is designed to provide highly scalable and flexible routing, making it ideal for large networks. It allows routers in different ASs to communicate and make informed routing decisions based on various factors such as network policies, path attributes, and performance metrics. BGP is widely used by internet service providers (ISPs) and large organizations to ensure efficient and reliable routing across the internet.

To connect Host A to Switch1, a straight-through UTP cable should be used. A straight-through cable has the same wiring arrangement on both ends, with the pins on one end mirroring the pins on the other end. This type of cable is typically used to connect a host device, like a computer or a server, to a switch or a hub. In this case, connecting Host A to Switch1 would require a straight-through cable to ensure proper communication between the two devices.

TCP ensures the reliable transfer of data by using the SYN-ACK portion of the three-way handshake to ensure that all data has been received. This handshake process involves the sender (source) sending a SYN packet to the receiver (destination), which responds with a SYN-ACK packet. The sender then acknowledges the SYN-ACK packet with an ACK packet. This process confirms the successful establishment of a connection and ensures that both parties are ready to exchange data. By using this handshake, TCP ensures that all data segments are received and acknowledged, providing reliable data transfer.

The purpose of the TCP three-way handshake is to synchronize sequence numbers between the source and destination in preparation for data transfer. This process ensures that both the source and destination are ready to establish a reliable connection and exchange data. By synchronizing sequence numbers, TCP ensures that data packets are delivered in the correct order and without errors.

The correct combination of cables and symbols is A - straight-through, B - crossover, C - straight-through. This means that cable A is a straight-through cable, cable B is a crossover cable, and cable C is a straight-through cable. This combination is correct for connecting devices in a network.

Port address translation (PAT) can be used to accomplish this task. PAT is a technique used to allow multiple devices to share a single public IP address. It works by assigning unique port numbers to each device within the network, allowing them to communicate with the Internet using the same public IP address. This way, the network administrator can provide simultaneous access to the Internet for all 250 users using only five public IPs.

If the ping command is successful, it means that workstation A is able to reach workstation B. In order to determine this, workstation A will send an ICMP echo request message to workstation B. Workstation B, upon receiving this request, will send an ICMP echo reply message back to workstation A. These two events confirm that the communication between the two workstations is successful.

The given IP address, 192.168.17.111/28, falls within the range of a broadcast address. In IPv4, a broadcast address is used to send a message to all devices on a network. The /28 subnet mask indicates that the first 28 bits of the IP address are used for the network portion, leaving only the last 4 bits for host addresses. Therefore, the last possible address in the network is the broadcast address, which is 192.168.17.111 in this case.

The correct answer is circuit switched. In this scenario, the modem dials a telephone number to establish a dedicated circuit for the transfer of transaction data. Circuit switching creates a continuous connection between the sender and receiver, ensuring reliable and secure data transmission.

The serial 0/0/0 interface of the new branch office router should be configured with the encapsulation ppp command to specify the Point-to-Point Protocol (PPP) encapsulation method. This allows for the establishment of a direct point-to-point connection between the branch office router and the headquarters router. The ip address 192.168.5.21 255.255.255.240 command assigns the IP address and subnet mask to the interface, and the no shutdown command ensures that the interface is enabled and operational.

The amber SYST LED indicates that the switch has failed POST (Power-On Self Test) and needs to be sent for service. This means that there is a hardware issue with the switch that needs to be addressed by a technician.

The Fohi router will dynamically learn routes to the 192.168.16.16/28, 192.168.16.32/28, and 192.168.16.64/28 subnetworks using a static route. This means that the network administrator manually configures the routes on the router, specifying the next hop for each subnetwork. This is in contrast to dynamic routing protocols like BGP or interior routing protocols, which automatically exchange routing information between routers to dynamically learn and update routes.

The first command "Router(config)# enable secret cisco" sets the password for privileged EXEC mode to "cisco" using the secret encryption method. This ensures that the password is not displayed in plain text when the configuration files are displayed.

The second command "Router(config)# service password-encryption" enables password encryption for all passwords stored in the configuration files. This ensures that any password, including the one set for privileged EXEC mode, is encrypted and not shown in plain text when the configuration files are displayed.

Port numbers are included in the TCP header of a segment to determine which Layer 3 protocol should be used to encapsulate the data. Port numbers are used to identify the specific application or service that the data is intended for. By including the port number in the TCP header, the receiving host can determine which Layer 3 protocol should be used to properly encapsulate and deliver the data to the appropriate application or service.

The debug ip rip command can be used to display RIP routing activity in real time. This command allows network administrators to monitor the routing updates and exchanges happening in the network. Additionally, the debug ip rip command can be issued at the user EXEC configuration mode, making it easily accessible for troubleshooting purposes.

The exhibit shows a data conversation and the two statements that describe it are: 1) The data conversation was started by the HTTP application process running on the client, and 2) The Internet server will send data to port 8547 on the client. These statements indicate that the client initiated the conversation through an HTTP application process, and the server will send data to a specific port on the client.

A router knows of paths to destination networks through two methods. Firstly, it inspects the destination IP address in data packets. By analyzing the IP address, the router can determine the appropriate path to forward the packet towards the destination network. Secondly, routers receive updates from other routers in the network. These updates contain information about the current network topology and any changes in the paths to destination networks. By receiving and processing these updates, the router can maintain an up-to-date routing table and make informed decisions on how to route data packets.

To configure a new network on a router and implement dynamic IP routing, there are three tasks that must be completed. First, the routing protocol needs to be selected. This is important as it determines how the router will exchange routing information with other routers. Second, an IP address and subnet mask must be assigned to the interface that will be connected to the new network. This allows the router to communicate with devices on that network. Finally, the routing protocol needs to be configured with the IP address of the new network. This ensures that the router knows how to route traffic to and from that network.

The TCP protocol creates a virtual session between end-user applications, allowing them to communicate with each other. It also carries the IP address of the destination host in the TCP header, ensuring that the data reaches the correct destination.