Which message does an IPv4 host use to reply when it receives a DHCPOFFER message from a DHCP server? *

5 points

DHCPACK

DHCPREQUEST

DHCPDISCOVER

DHCPOFFER

What OSI layer is responsible for establishing a temporary communication session between two applications and ensuring that transmitted data can be reassembled in proper sequence? *

5 points

Session

Transport

Network

Data link

PC1 and PC3 are on different networks separated by a router, RT1. PC1 issues an ARP request because it needs to send a packet to PC3. In this scenario, what will happen next? *

5 points

RT1 will forward the ARP request to PC3.

RT1 will drop the ARP request.

RT1 will send an ARP reply with its own MAC address.

RT1 will send an ARP reply with the PC3 MAC address.

What addresses are mapped by ARP? *

5 points

Destination IPv4 address to the source MAC address

Destination IPv4 address to the destination hostname

Destination MAC address to the source IPv4 address

Destination MAC address to a destination IPv4 address

Which two OSI model layers have the same functionality as two layers of the TCP/IP model? (Choose two.) *

10 points

Session

Transport

Network

Data link

Physical

Which statement is true about the TCP/IP and OSI models? *

5 points

The TCP/IP transport layer and OSI Layer 4 provide similar services and functions.

The TCP/IP network access layer has similar functions to the OSI network layer.

The OSI Layer 7 and the TCP/IP application layer provide identical functions.

The first three OSI layers describe general services that are also provided by the TCP/IP Internet layer.

What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.) *

15 points

ARP

DHCP

DNS

FTP

NAT

PPP

If the default gateway is configured incorrectly on the host, what is the impact on communications? *

5 points

The host is unable to communicate on the local network.

There is no impact on communications.

The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.

The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.

Which message delivery option is used when all devices need to receive the same message simultaneously? *

5 points

Duplex

Unicast

Multicast

Broadcast

A high school in New York (school A) is using videoconferencing technology to establish student interactions with another high school (school B) in Russia. The videoconferencing is conducted between two end devices through the Internet. The network administrator of school A configures the end device with the IP address 209.165.201.10. The administrator sends a request for the IP address for the end device in school B and the response is 192.168.25.10. Neither school is using a VPN. The administrator knows immediately that this IP will not work. Why? *

5 points

This is a link-local address.

This is a loopback address.

There is an IP address conflict.

This is a private IP address.

Which two characteristics are associated with UDP sessions? (Choose two.) *

10 points

Unacknowledged data packets are retransmitted.

Destination devices receive traffic with minimal delay.

Destination devices reassemble messages and pass them to an application.

Transmitted data segments are tracked.

Received data is unacknowledged.

What is the prefix length notation for the subnet mask 255.255.255.224? *

5 points

/26

/27

/28

/25

Why does a Layer 3 device perform the ANDing process on a destination IP address and subnet mask? *

10 points

to identify the network address of the destination network

to identify the host address of the destination host

to identify the broadcast address of the destination network

to identify faulty frames

Which TCP mechanism is used to identify missing segments? *

10 points

sequence numbers

FCS

acknowledgments

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