Cisco CCST-Networking Exam Dumps - Actual Questions Answers

To capture packets sent to and received from the URLhttps://www.companypro.net:7100/api using Wireshark, you would use the following filter options:

Protocol:tcp

Filter Type:port

Port Number:7100

This filter setup in Wireshark will display all TCP packets that are sent to or received from port 7100, which is the port specified in the URL for the API service. Since HTTPS typically uses TCP as the transport layer protocol, filtering by TCP and the specific port number will help isolate the relevant packets for troubleshooting the app’s data download issues.

cp: The app is using HTTPS, which relies on the TCP protocol for communication.

port: The specific port number used by the application, which in this case is 7100.

7100: This is the port specified in the URL (https://www.companypro.net:7100/api ).

This filter will capture all TCP traffic on port 7100, allowing you to analyze the packets related to the application's data download.

References:

Wireshark Filters: Wireshark Display Filters

The two interfaces are administratively shut down:

False: The output does not show any "shutdown" command under the interfaces, which would indicate that they are administratively shut down. Therefore, they are likely in their default state, which is administratively up.

The two interfaces have default IP addresses assigned:

False: The output does not show any IP address configuration. In the default state, interfaces do not have IP addresses assigned unless explicitly configured.

The two interfaces can communicate over Layer 2:

True: By default, interfaces on a switch are Layer 2 interfaces capable of forwarding Ethernet frames. As there is no configuration provided that changes this, it can be assumed they can communicate over Layer 2.

Interface Status: The absence of the "shutdown" command means the interfaces are not administratively shut down.

IP Address Assignment: There is no evidence in the output that IP addresses have been assigned to the interfaces, which would typically be shown as "ip address" entries.

Layer 2 Communication: Switch interfaces in their default state operate at Layer 2, enabling them to forward Ethernet frames and participate in Layer 2 communication.

References:

Cisco IOS Interface Configuration: Cisco Interface Configuration

Understanding Cisco Switch Interfaces: Cisco Switch Interfaces

OSI model

During the data encapsulation process, theData Link layerof the OSI model is responsible for adding a header that contains MAC addressing information and a trailer used for error checking.The header typically includes the source and destination MAC addresses, while the trailer contains a Frame Check Sequence (FCS) which is used for error detection1.

The Data Link layer ensures that messages are delivered to the proper device on a LAN using hardware addresses and translates messages from the Network layer into bits for the Physical layer to transmit. It also controls how data is placed onto the medium and is received from the medium through the physical hardware.

References:=

The OSI Model – The 7 Layers of Networking Explained in Plain English

OSI Model - Network Direction

Which layer adds both header and trailer to the data?

What is OSI Model | 7 Layers Explained - GeeksforGeeks