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Free Practice Quiz Question List

1 Network Services Foundations and Lab Setup Online Quiz Questions

Use this free practice quiz with 20 questions to review 1 Network Services Foundations and Lab Setup, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

For initial network-service experiments, bridged networking keeps a VM off the physical LAN. True or false?

  1. A

    True

  2. B

    False

02
Written response
1 point

You are configuring a firewall rule to allow IPv4 DHCP requests to reach a DHCP server. Which UDP destination port does the server use? Enter the port number.

03
Fill in the blank
1 point

A client determines that its destination is on the local subnet. On IPv4 Ethernet, it uses to find the next-hop Ethernet address.

04
Choose one
1 point

A client can reach a service by its IP address but needs to use its name. Which service provides the name-to-record lookup?

  1. A

    It chooses the router path to the destination.

  2. B

    It translates names into resource records, commonly IP addresses.

  3. C

    It assigns the client an IP address and subnet mask.

  4. D

    It synchronizes the client’s clock.

05
Choose one
1 point

A client’s subnet mask indicates that a destination is on a different subnet. Where should the client send the packet next?

  1. A

    Send it directly to the destination’s Ethernet address.

  2. B

    Broadcast it to all devices on the local subnet.

  3. C

    Send it to the configured default gateway.

  4. D

    Send it to the DNS resolver for routing.

06
True or false
1 point

Marking packets for a preferred QoS class guarantees that they will receive better service end to end. True or false?

  1. A

    True

  2. B

    False

07
Written response
1 point

A firewall must allow a client to reach its configured NTP server using the typical NTP transport. Which UDP port should be allowed? Enter the port number.

08
Fill in the blank
1 point

When configuring a DHCP scope, include the correct subnet and default gateway, along with the clients should use.

09
Choose all
1 point

You are preparing a lab to test your own DHCP server on a virtual network. Select all choices that help keep the setup isolated and avoid competing DHCP offers.

  1. A

    Use an internal or host-only virtual network for the lab.

  2. B

    Use bridged networking so the lab can share the physical LAN.

  3. C

    Choose a private IPv4 subnet that does not overlap existing networks.

  4. D

    Disable the hypervisor DHCP service on that network when testing your own DHCP server there.

10
Choose one
1 point

A lab uses two subnets, and its router VM has a WAN interface connected to hypervisor NAT. What should you do rather than assume the hypervisor NAT adapter routes between the lab subnets?

  1. A

    Assume the adapter automatically routes between all lab subnets.

  2. B

    Configure routing on the router VM if the lab needs inter-subnet connectivity.

  3. C

    Remove the isolated LAN interface from the router VM.

  4. D

    Replace the router VM with a DNS resolver.

11
Choose all
1 point

A client cannot reach the router’s LAN address. Select all checks identified as useful for troubleshooting this local-reachability failure.

  1. A

    Check whether the client interface is up.

  2. B

    Check whether the subnet mask is correct.

  3. C

    Check for duplicate addresses.

  4. D

    Check local filtering.

12
Choose one
1 point

A router has working routes, but traffic leaving the network may need address translation at the boundary. Which statement correctly describes NAT?

  1. A

    NAT selects the route, so a routing table is unnecessary.

  2. B

    NAT is another name for a firewall.

  3. C

    NAT only resolves host names into IP addresses.

  4. D

    NAT may translate addresses and, for many-to-one NAT, ports; it is not the same as routing or a firewall.

13
Open ended
1 point

Describe a controlled lab test to determine whether a QoS policy has a visible effect. State what traffic condition to create, what to compare, and why the test might show no difference without that condition.

14
Written response
1 point

Which port does DNS commonly use for queries?

15
True or false
1 point

QoS policies can include marking, shaping, policing, or assigning forwarding priority to traffic. True or false?

  1. A

    True

  2. B

    False

16
Written response
1 point

Which protocol synchronizes device clocks? Enter the protocol acronym.

17
Choose one
1 point

What is needed to pass DHCP requests between subnets? Select one answer.

  1. A

    A router or DHCP relay

  2. B

    A DNS resolver

  3. C

    A QoS traffic marker

  4. D

    An NTP server

18
Choose one
1 point

Which option is the example private IPv4 subnet given for a lab, assuming it does not overlap your existing networks?

  1. A

    192.168.50.0/24

  2. B

    8.8.8.0/24

  3. C

    224.0.0.0/24

  4. D

    192.0.2.0/24

19
Choose one
1 point

You are setting up a router/firewall VM with optional internet access and a private lab network. Which interface arrangement matches the recommended topology?

  1. A

    Connect both router interfaces to the physical LAN using bridged networking.

  2. B

    Connect the WAN interface to the isolated lab network and the LAN interface to hypervisor NAT.

  3. C

    Connect the WAN interface to hypervisor NAT and the LAN interface to the isolated lab network.

  4. D

    Connect both router interfaces to the same host-only network.

20
Choose one
1 point

A client determines that a destination is outside its local subnet. What should it do with the packet next?

  1. A

    Send every packet directly to the DNS resolver.

  2. B

    Send the packet to the configured default gateway.

  3. C

    Use ARP to discover the remote destination's Ethernet address.

  4. D

    Ask the DHCP server to forward the packet.