01
True or false
1 point
True or false: Receiving a valid DHCP lease alone proves that a client can resolve hostnames.
Free Practice Quiz Question List
4 IP Services and Address Management Online Quiz Questions
Use this free practice quiz with 20 questions to review 4 IP Services and Address Management, test your knowledge, and prepare for your next test or exam.
20 questions
02
Written response
1 point
Which DNS record type maps a hostname to an IPv4 address?
03
Fill in the blank
1 point
In the common DHCP DORA exchange, after the client sends Request, the server sends .
04
True or false
1 point
NAT by itself is a firewall and can replace a network's security policy.
- A
True
- B
False
05
Choose one
1 point
An IPv6 host needs to learn its default router. Which message provides that information?
- A
A DHCPv6 server message
- B
A Router Advertisement
- C
A DNS AAAA record
- D
An IPv4 DHCP Offer
06
Written response
1 point
Which UDP port does NTP use? Enter the port number as an integer.
07
Choose one
1 point
A client can reach a remote service by IP address but cannot reach it by hostname. Which area should you investigate first?
- A
The default gateway's interface address
- B
The host's VLAN assignment
- C
The configured DNS resolver and the hostname's record
- D
The DHCP lease duration
08
Fill in the blank
1 point
A DHCP server is on a different subnet from its clients. On Cisco IOS, configure a relay on the client-facing Layer 3 interface using the command followed by the server address.
09
Choose all
1 point
Which two statements accurately describe PAT (NAT overload)? Select all correct choices.
- A
Multiple inside hosts can share one public IPv4 address.
- B
Each inside host must have a fixed one-to-one public address.
- C
Transport-layer ports can distinguish sessions.
- D
It automatically filters all unsolicited traffic as a firewall.
10
Choose one
1 point
A company needs an internal service to be reachable consistently at the same external IP address. Which NAT method best fits this requirement?
- A
Dynamic NAT, because it assigns addresses from a pool as needed
- B
Static NAT, because it creates a fixed one-to-one mapping
- C
PAT, because it requires a different public IPv4 address for every host
- D
DHCP relay, because it maps internal services to public addresses
11
Choose all
1 point
A DHCP client receives a lease. Which settings can DHCP supply to the client? Select all correct choices.
- A
Subnet mask
- B
Default gateway
- C
DNS server
- D
Lease duration
- E
A guaranteed route through every router on the network
12
Open ended
1 point
A network uses Router Advertisements to advertise an IPv6 prefix and also enables stateless DHCPv6 for extra settings. Explain how a host can obtain its address, additional settings such as DNS information, and default-router information.
13
Choose one
1 point
Which protocol carries IPv6 Neighbor Discovery (NDP) messages?
- A
UDP
- B
ICMPv6
- C
TCP
- D
ICMP
14
Choose one
1 point
Clients on one subnet receive no leases from a DHCP server on another subnet. What should you configure on the clients' Layer 3 gateway?
- A
Configure the DHCP server to send Router Advertisements.
- B
Add a static route on each client to the DHCP server.
- C
Configure a relay on the client-facing Layer 3 interface.
- D
Enable PAT on the switch.
15
Written response
1 point
Which DNS record type maps a name to an IPv6 address?
16
Choose one
1 point
A small network has many inside hosts but only one public IPv4 address. Which translation approach lets them share that address for outbound sessions?
- A
Use PAT so transport-layer ports distinguish the hosts' sessions.
- B
Use static NAT to assign a separate public address to every host.
- C
Use dynamic NAT with a public pool containing one address per host.
- D
Use DNS to translate the private addresses into one public address.
17
True or false
1 point
True or false: A lower NTP stratum directly guarantees that a device's clock is more accurate.
- A
True
- B
False
18
Written response
1 point
How many bits long is an IPv4 address? Enter the answer as an integer.
19
Choose one
1 point
A host uses SLAAC together with stateless DHCPv6. Which statement correctly describes how it gets an address, extra settings, and default-router information?
- A
Stateful DHCPv6 assigns the address, and DHCPv6 supplies the default router.
- B
The host forms its address from DNS records, and the router learns the default gateway from DHCPv6.
- C
The host forms its address using the advertised prefix, can obtain extra settings from stateless DHCPv6, and learns the default router from RAs.
- D
The router assigns the address through NDP, while stateless DHCPv6 supplies the default router.
20
Choose one
1 point
A host can ping its default gateway but cannot reach a remote IP address. Which check most directly addresses the likely problem beyond the local subnet?
- A
Change the DNS record for the remote host.
- B
Check the gateway's route onward and possible filtering.
- C
Configure the host to use a different DNS resolver.
- D
Replace the host's address with an IPv6 address.
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