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CCST-Networking Echte Fragen, CCST-Networking Prüfungsinformationen

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Cisco CCST-Networking Prüfungsplan:

Thema
Einzelheiten

Thema 1

Addressing and Subnet Formats: For aspiring Cisco network technicians, the CCST Networking exam evaluates the ability to compare private and public IP addresses, identify IPv4 addresses and subnet formats, and recognize IPv6 addresses and prefix formats. This ensures they can manage and configure network addressing effectively.

Thema 2

Endpoints and Media Types: This topic in the CCST-Networking exam covers the identification of common cables and connectors used in LANs, distinguishing Wi-Fi, cellular. Additionally, it focuses on wired technologies, describing endpoint devices, and demonstrating connectivity setup and checks across multiple operating systems (Windows, Linux, Mac OS, Android, and Apple iOS).

Thema 3

Diagnosing Problems: In the CCST-Networking exam, Cisco network technicians are tested on their ability to employ troubleshooting methodologies and help desk practices, perform packet captures with Wireshark, run and interpret diagnostic commands. It also tests their skills to differentiate data collection methods for network devices, and execute basic show commands on Cisco devices.

>> CCST-Networking Echte Fragen <<

CCST-Networking PrüfungGuide, Cisco CCST-Networking Zertifikat - Cisco Certified Support Technician (CCST) NetworkingExam

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Cisco Certified Support Technician (CCST) NetworkingExam CCST-Networking Prüfungsfragen mit Lösungen (Q10-Q15):

10. Frage
Which protocol allows you to securely upload files to another computer on the internet?

A. ICMP
B. SFTP
C. HTTP
D. NTP

Antwort: B

Begründung:
SFTP, or Secure File Transfer Protocol, is a protocol that allows for secure file transfer capabilities between networked hosts. It is a secure extension of the File Transfer Protocol (FTP). SFTP encrypts both commands and data, preventing passwords and sensitive information from being transmitted openly over the network. It is typically used for secure file transfers over the internet and is built on the Secure Shell (SSH) protocol1.
References :=
*What Is SFTP? (Secure File Transfer Protocol)
*How to Use SFTP to Safely Transfer Files: A Step-by-Step Guide
*Secure File Transfers: Best Practices, Protocols And Tools
The Secure File Transfer Protocol (SFTP) is a secure version of the File Transfer Protocol (FTP) that uses SSH (Secure Shell) to encrypt all commands and data. This ensures that sensitive information, such as usernames, passwords, and files being transferred, are securely transmitted over the network.
*ICMP (Internet Control Message Protocol) is used for network diagnostics and is not designed for file transfer.
*NTP (Network Time Protocol) is used to synchronize clocks between computer systems and is not related to file transfer.
*HTTP (HyperText Transfer Protocol) is used for transmitting web pages over the internet and does not inherently provide secure file transfer capabilities.
Thus, the correct protocol that allows secure uploading of files to another computer on the internet is SFTP.
References :=
*Cisco Learning Network
*SFTP Overview (Cisco)

11. Frage
In the network shown in the following graphic, Switch1 is a Layer 2 switch.

PC-A sends a frame to PC-C. Switch1 does not have a mapping entry for the MAC address of PC-C. Which action does Switch1 take?

A. Switch1 floods the frame out all active ports except port G0/1.
B. Switch1 sends an ARP request to obtain the MAC address of PC-C.
C. Switch1 queries Switch2 for the MAC address of PC-C.
D. Switch1 drops the frame and sends an error message back to PC-A.

Antwort: A

Begründung:
Understanding How Layer 2 Switches Handle Unknown MAC Addresses
Switches operate atLayer 2 (Data Link Layer)of the OSI model and maintain aMAC address table (CAM table)to forward frames efficiently.
* When a switch receives a frame, itchecks its MAC address tableto see if it knows the destination MAC address.
* If the destinationMAC address is not in the table(meaning the switch does not know which port leads to PC-C), the switch follows theflooding behavior.
What Happens When Switch1 Receives a Frame from PC-A to PC-C?
* Switch1 checks its MAC table:
* The source MAC (PC-A) is recorded in the table on portG0/1.
* The destination MAC (PC-C)is not in the table.
* Switch1 does not know where PC-C is:
* Itfloodsthe frame out of allactive ports except the port it was received on (G0/1).
* This means the frame is sent to:
* Switch2 (via G0/23)
* PC-B (via G0/2)
* Switch2 receives the frame and follows the same process:
* If Switch2 has PC-C's MAC in its table, it forwards the frame appropriately.
* If not,it floodsthe frame again until PC-C replies.
* Once PC-C responds, Switch1 and Switch2 learn its MAC address and update their tables.
Why Other Options Are Incorrect:
#A. Switch1 queries Switch2 for the MAC address of PC-C.
* Incorrect:Switches do not query other switches directly for MAC addresses. Instead, they rely on learning MAC addresses dynamically through frame forwarding.
#B. Switch1 drops the frame and sends an error message back to PC-A.
* Incorrect:Switchesdo not drop frames for unknown MAC addresses. Instead, theyfloodthe frames out all ports except the incoming port.
#D. Switch1 sends an ARP request to obtain the MAC address of PC-C.
* Incorrect:
* ARP (Address Resolution Protocol)is only used to resolve IP addresses to MAC addresses.
* Since PC-A issending a frame (Layer 2), not an IP packet (Layer 3), ARP isnot involvedhere.
Conclusion
Since Switch1does not know the destination MAC address, itfloods the frame out all active ports except the port it was received on. This is the default behavior of Layer 2 switches when they encounter an unknown MAC address.
Thus, thecorrect answer is:#C. Switch1 floods the frame out all active ports except port G0/1.
References
* Cisco CCNA 200-301 Official Guide - MAC Address Table & Frame Forwarding
* RFC 894 - Standard for Ethernet Frame Forwarding
* Cisco Networking Essentials - Switch Flooding Behavior

12. Frage
A Cisco PoE switch is shown in the following image. Which type of port will provide both data connectivity and power to an IP phone?

A. Ports identified with number 7
B. Port identified with number 2
C. Ports identified with number 6
D. Ports identified with numbers 3 and 4

Antwort: C

Begründung:
In the provided image of the Cisco PoE switch, the ports identified with number 6 are the standard RJ-45 Ethernet ports typically found on switches that provide both data connectivity and Power over Ethernet (PoE).
PoE ports are designed to supply power to devices such as IP phones, wireless access points, and other PoE- enabled devices directly through the Ethernet cable.
Ports:
*2: Console port (for management and configuration)
*3 and 4: Specific function ports (often for management)
*6: RJ-45 Ethernet ports (capable of providing PoE)
*7: SFP ports (for fiber connections, typically do not provide PoE)
Thus, the correct answer is C. Ports identified with number 6.
References :=
*Cisco Catalyst 2960-L Series Switches Data Sheet
*Cisco PoE Overview

13. Frage
During the data encapsulation process, which OSI layer adds a header that contains MAC addressing information and a trailer used for error checking?

A. Session
B. Transport
C. Data Link
D. Network

Antwort: C

Begründung:

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

14. Frage
Which standard contains the specifications for Wi-Fi networks?

A. EIA/TIA 568A
B. IEEE 802.11
C. IEEE 802.3
D. LTE
E. GSM

Antwort: B

Begründung:
The IEEE 802.11 standard contains the specifications for Wi-Fi networks. It is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communication in various frequencies, including but not limited to 2.4 GHz, 5 GHz, and 6 GHz1.
This standard is maintained by the Institute of Electrical and Electronics Engineers (IEEE) and is commonly referred to as Wi-Fi. The standard has evolved over time to include several amendments that improve speed, range, and reliability of wireless networks.
References :=
*The Most Common Wi-Fi Standards and Types, Explained
*802.11 Standards Explained: 802.11ax, 802.11ac, 802.11b/g/n, 802.11a
*Wi-Fi Standards Explained - GeeksforGeeks

15. Frage
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