Final - P4

A client packet is received by a server. The packet has a destination port number of 22. What service is the client requesting?

What characteristic describes an IPS?

• a network device that filters access and traffic coming into a network
• a tunneling protocol that provides remote users with secure access into the network of an organization
• software that identifies fast-spreading threats
• software on a router that filters traffic based on IP addresses or applications

What service is provided by DHCP?

• Dynamically assigns IP addresses to end and intermediary devices.
• An application that allows real-time chatting among remote users.
• Allows remote access to network devices and servers.
• Uses encryption to provide secure remote access to network devices and servers.

Refer to the exhibit. The switches have a default configuration. Host A needs to communicate with host D, but host A does not have the MAC address for the default gateway. Which network devices will receive the ARP request sent by host A?

• only hosts B, C, and router R1
• only router R1
• only hosts A, B, and C
• only hosts B and C
• only hosts A, B, C, and D

Which wireless technology has low-power and low-data rate requirements making it popular in IoT environments?

• Zigbee
• Bluetooth
• WiMAX
• Wi-Fi

A client is using SLAAC to obtain an IPv6 address for its interface. After an address has been generated and applied to the interface, what must the client do before it can begin to use this IPv6 address?

• It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.
• It must send a DHCPv6 INFORMATION-REQUEST message to request the address of the DNS server.
• It must send a DHCPv6 REQUEST message to the DHCPv6 server to request permission to use this address.
• It must send an ICMPv6 Router Solicitation message to determine what default gateway it should use.

Two pings were issued from a host on a local network. The first ping was issued to the IP address of the default gateway of the host and it failed. The second ping was issued to the IP address of a host outside the local network and it was successful. What is a possible cause for the failed ping?

• Security rules are applied to the default gateway device, preventing it from processing ping requests.
• The default gateway is not operational.
• The default gateway device is configured with the wrong IP address.
• The TCP/IP stack on the default gateway is not working properly.

An organization is assigned an IPv6 address block of 2001:db8:0:ca00::/56. How many subnets can be created without using bits in the interface ID space?

• 256
• 512
• 1024
• 4096

What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted?

• 255.255.255.192
• 255.255.255.0
• 255.255.255.240
• 255.255.255.128
• 255.255.255.224

Refer to the exhibit. If host A sends an IP packet to host B, what will the destination address be in the frame when it leaves host A?

• BB:BB:BB:BB:BB:BB
• DD:DD:DD:DD:DD:DD
• 172.168.10.99
• CC:CC:CC:CC:CC:CC
• 172.168.10.65