____ ICMP Match the following! A. Provides error detection/reporting and network
ID: 3679880 • Letter: #
Question
____ ICMP
Match the following!
A. Provides error detection/reporting and network management
queries
____ DHCP
____ NAT
B. Permits many hosts to share a few public IP addresses by
translating between private and public IP addresses
C. Assigns IP addresses automatically, usually for a limited
amount of time
____ ARP
D. Given an IP address, finds the corresponding MAC address
Answer the following questions concerning IP helper protocols:
7.1 The IPv4 ARP cache deals with stale data by:
A) It doesn’t. There is no possibility of stale data in an ARP cache
B) Performing a full ARP request/response each time a physical address is desired
C) Removing all entries from the cache (flushing the cache) every few minutes
D) Removing an entry from the cache when its time-to-live has expired
7.2 Ping is implemented using DHCP messages.
a. true b. false
7.3 A router broadcasts an ARP request concerning a destination IP address. What is the message asking?
A) What is the port number used by the destination IP address?
B) What is the MAC address of the host that has that IP address?
C) What is the URL corresponding to the specific IP address?
D) What is the IP address of the gateway router?
7.4 IPv6 uses the ARP protocol?
A. True b. false
7.5 You want to put a server on a private network behind a NAT router. How can you do this?
a. It is impossible to put a server behind a NAT router
b. Use DHCP to assign a private address to the server
c. Assign the server an IPv6 link local address
d. Use port forwarding
____ ICMP
Match the following!
A. Provides error detection/reporting and network management
queries
____ DHCP
____ NAT
B. Permits many hosts to share a few public IP addresses by
translating between private and public IP addresses
C. Assigns IP addresses automatically, usually for a limited
amount of time
____ ARP
D. Given an IP address, finds the corresponding MAC address
Explanation / Answer
ICMP: Provides error detection/reporting and network management
queries
DHCP:Assigns IP addresses automatically, usually for a limited
amount of time
NAT: Permits many hosts to share a few public IP addresses by
translating between private and public IP addresses
ARP: Given an IP address, finds the corresponding MAC address
7.1) D.Removing an entry from the cache when its time-to-live has expired
7.2) B.False
Ping operates by sending Internet Control Message Protocol (ICMP) echo request
7.3) B
7.4) False. he function of ARP is replaced in IPv6 by Neighbor Solicitation messages.
7.5). B. Use DHCP to assign a private address to the server
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