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Cisco 100-490 Certification Exam is designed for network professionals who want to validate their skills in supporting Cisco routing and switching network devices. 100-490 exam covers a range of topics, including network fundamentals, network access, IP connectivity, IP services, security fundamentals, and automation and programmability. Participants who pass the exam will earn the Cisco Certified Technician Routing and Switching (CCT Routing and Switching) certification.
NEW QUESTION # 43
Which two pieces of information about a neighboring device are displayed when you use the CLI command show cdp neighbor? (Choose two.)
Answer: A,E
NEW QUESTION # 44
What are two standard fiber-optic connectors? (Choose two.)
Answer: D,E
Explanation:
Section: Cisco Equipment and Related Hardware
NEW QUESTION # 45
The colored wires at one end of a cable are in reverse sequence to the colored wires at the other end of the cable. Which cable does this configuration describe?
Answer: B
Explanation:
Section: Cisco Equipment and Related Hardware
NEW QUESTION # 46
What are two components of a WAN connection? (Choose two.)
Answer: C,E
Explanation:
A Wide Area Network (WAN) connection typically involves several components that work together to enable data communication over large distances. Two key components of a WAN connection are:
CSU/DSU (Channel Service Unit/Data Service Unit): This device acts as a gateway between the local area network (LAN) and the WAN. It converts the digital signals used in the LAN to the signals used in the WAN, which are often analog12.
Router: A router is used to connect multiple networks together and direct data traffic. In the context of a WAN, routers are responsible for determining the best path for data to travel across the network12.
NEW QUESTION # 47
What is the primary method for recovering or upgrading a Cisco network device system image?
Answer: B
Explanation:
The tftpdnld command in Cisco IOS is specifically designed for recovering or upgrading a system image. Here's how it's the most effective method:
Purpose: The tftpdnld command directly initiates a TFTP download of a new system image and stores it in memory. This is ideal for replacing a corrupt image or upgrading to a newer version of Cisco IOS.
ROMmon: The tftpdnld command can often be used from ROMmon mode, which is essential when the existing image is unusable.
Efficiency: It streamlines the image transfer process specifically using TFTP, which is commonly used for Cisco IOS images.
Why other options are less ideal:
USB storage: While some newer Cisco devices may allow direct loading of an IOS image from USB, this isn't universally supported and often requires specific boot commands.
FTP: FTP (File Transfer Protocol) can be used for file transfers, but it's not as commonly used as TFTP in the context of Cisco IOS image recovery. The tftpdnld command offers a more tailored solution for this purpose.
the xmodem command: XMODEM is a legacy file transfer protocol that is slower and less reliable than TFTP, especially for larger files like Cisco IOS images.
NEW QUESTION # 48
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