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Cisco Certification
100-490 Exam
Cisco.100-490.v2025-04-05.q61 Dumps

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Question 1

How are IPv6 addresses notated?

A.2001:ODB8::1:1:1:1:1
B.2001:0DB8:130F:0000:0000:7000:0000:140B
C.2001:0DB8:0::
D.2001:0DB8::/128

Correct Answer: B

IPv6 addresses are 128 bits in length and are written as eight groups of four hexadecimal digits. Each group is separated from the others by colons (:). The correct notation for IPv6 addresses allows for the omission of leading zeros within each block of four hexadecimal digits and the use of double colons (::) to represent consecutive blocks of zeros. However, the double colons can only be used once in an address to ensure proper expansion to the full 128 bits. Option B is the only choice that correctly represents a full IPv6 address without any abbreviation. Options A and C use double colons incorrectly, and option D represents a prefix length rather than a full address. Reference := The information is based on standard IPv6 address notation practices, which include the representation of addresses in hexadecimal format and the rules for abbreviating zeros1

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Question 2

Which command displays a list of file systems that are available on Cisco devices?

A.show memory
B.show directory
C.show file system
D.show version

Correct Answer: C

The command show file system is used on Cisco devices to display a list of all the file systems available. This command provides information about each file system, including its name, size, free space, and file system type (such as flash or nvram). It's a useful command for network administrators to manage and navigate through different storage areas on Cisco devices, ensuring they can access and maintain the device's file structure effectively. Reference := File System Commands on Cisco IOS XR Software - Cisco, Working with the Cisco IOS File System, Configuration Files, and Software Images

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Question 3

Which two IPv4 addresses are assigned to host computers? (Choose two.)

A.292.10.3.4
B.10.1.1.20
C.255.255.255.255
D.0.0.0.0
E.192.168.10.15

Correct Answer: B,E

In the context of IPv4 addresses, a host address is an identifier for a specific device on a network. The addresses 10.1.1.20 and 192.168.10.15 are both within ranges typically reserved for private networks, making them suitable for assignment to host computers within a local network. Address 292.10.3.4 is not a valid IPv4 address because the first octet is beyond the maximum value of 255. Address 255.255.255.255 is reserved for broadcast messages to all hosts on the local network, and 0.0.0.0 is used to denote an unspecified address, often indicating the absence of an IP address123. Reference := IP address, Network address, and Host address Explained, IP address - Wikipedia, Understanding IP Addresses: How IP Addressing Works | ENP

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Question 4

Refer to the exhibit. Which two statements about the hardware components are true? (Choose two.)

A.2 is an RJ-45 to USB Type A console cable.
B.3 is a USB Type A port.
C.3 is a USB 5-pin mini USB Type B port.
D.1 is a USB Type A port.
E.2 is a USB 5-pin mini USB Type B to USB Type A console cable.

Correct Answer: B,E

Section: Cisco Equipment and Related Hardware
Explanation/Reference: https://www.cisco.com/c/en/us/td/docs/routers/access/2900/hardware/installation/guide/ Hardware_Installation_Guide/Install_Connect.html

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Question 5

Which two statements about a SmartJack are true? (Choose two.)

A.It regenerates the signal to compensate for signal degradation from line transmission.
B.It provides signal conversion.
C.It provides channel testing.
D.It acts as a concentration point for dial-in and dial-out connections.
E.It operates at Layer 2 of the OSI model.

Correct Answer: A,B

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