With a subnet mask of 255.255.255.224, which of the IP addresses below are valid host addresses? (Choose all that apply)

• A.95.11.22.93
• B.87.99.12.159
• C.17.23.119.63
• D.192.11.25.87

Comment: *

Name: *

Email: *

Verification: *

Which of the following statements about the IP forwarding process is TRUE?

• A.It uses the ARP table to find a match for the destination MAC address.
• B.It uses the ARP table to find a match for the source MAC address.
• C.It uses the forwarding table to find a match for the source IP address.
• D.It uses the forwarding table to find a match for the destination IP address.

Comment: *

Name: *

Email: *

Verification: *

Which of the following statements about IP filters on a Nokia 7750 SR is FALSE?

• A.The default action of an IP filter is to forward packets.
• B.IP filters can be applied on inbound traffic, outbound traffic, or both.
• C.IP filters can be created to filter based on IP and MAC addressing.
• D.By default, no IP filter is applied to an interface.

Comment: *

Name: *

Email: *

Verification: *

TCP is sending data in 5 segments with SEQ numbers 27000, 27500.28000, 28500, and 29000 respectively.
During transmission, the segment with SEQ=28500 is dropped in the network. How does TCP handle this situation?

• A.The receiving end station sends an ACK flag with SEQ=28000 to indicate it has received a segment out of order.
• B.The receiving station sends a NACK frame with SEQ=28500 requesting that the frame be retransmitted
• C.Once the reciever's window is full. TCP assembles the payload and determines that SEQ=28500 is missing.
  At this point, the reciever sends the RST flag with SEQ=28500 to Request Single Transmission of the missing segment.
• D.TCP will collect the segments and forward them to the application layer where the SEQ numbers will be processed and a retransmit request will occur for the entire packet.

Comment: *

Name: *

Email: *

Verification: *

Which of the following best describes the function of an ARP cache within the same subnet?

• A.Resolves the MAC address of a host device given its IP address.
• B.Used by IP to map an unknown IP address to the known hardware address of the distant host.
• C.Transmits ICMP messages to multiple hosts with unknown IP addresses.
• D.Adds only an IP address entry for an unknown device on the same subnet.

Comment: *

Name: *

Email: *

Verification: *