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SK0-004 · Question #132

A new file server is added to an existing network. Some users are able to connect to this server, while others are not. A partial network configuration on the server shows the following: Link local…

The correct answer is B. The users' workstations do not support IPv6. The server only has an IPv6 link-local address configured, so users whose workstations lack IPv6 support cannot establish a connection to it.

Troubleshooting

Question

A new file server is added to an existing network. Some users are able to connect to this server, while others are not. A partial network configuration on the server shows the following:

Link local: fe80::3000:aff:dea6:f8c/64 Which of the following BEST explains why some users cannot connect to the server?

Options

  • AThe users' workstations are configured to use DHCP.
  • BThe users' workstations do not support IPv6.
  • CThe users' workstations are not on the same network as the server.
  • DThe user's workstations are configured with an incorrect subnet mask.

How the community answered

(38 responses)
  • A
    3% (1)
  • B
    82% (31)
  • C
    5% (2)
  • D
    11% (4)

Why each option

The server only has an IPv6 link-local address configured, so users whose workstations lack IPv6 support cannot establish a connection to it.

AThe users' workstations are configured to use DHCP.

DHCP configuration affects IPv4 address assignment and is unrelated to whether a workstation can initiate a connection to a server using an IPv6 link-local address.

BThe users' workstations do not support IPv6.Correct

The server's partial configuration shows only an IPv6 link-local address (fe80::/64 range) with no IPv4 address present. Workstations that have IPv6 disabled or do not support it cannot communicate using an IPv6 address. Users who can connect have IPv6 enabled on their workstations, while those who cannot are missing IPv6 support entirely.

CThe users' workstations are not on the same network as the server.

Link-local addresses (fe80::/10) are non-routable and scoped to the local segment, but since some users can connect, network location is not the cause - IPv6 protocol support is the differentiating factor.

DThe user's workstations are configured with an incorrect subnet mask.

Subnet mask configuration is an IPv4 concept and is irrelevant when the only server address shown is an IPv6 link-local address.

Concept tested: IPv6 link-local addressing and workstation compatibility

Source: https://learn.microsoft.com/en-us/windows-server/networking/technologies/ipv6/ipv6-overview

Topics

#IPv6#link-local address#network connectivity#troubleshooting

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