Week 5 Questions
What is the purpose of the checksum TCP field?
It allows the receiving node to determine whether the TCP segment became corrupted during transmission.
What routing metric affects a path's potential performance due to delay?
Latency
In the event of a duplicate MAC address shared by two hosts on a switched network, what statement is accurate?
The hosts will still send and receive traffic, but traffic may not always reach the correct destination.
IP is an unreliable, connectionless protocol, as it does not establish a session to send its packets.
True
The cost of upgrading infrastructure has been a major factor in the slow adoption of IPv6.
True
In a TCP segment, what field indicates how many bytes the sender can issue to a receiver before acknowledgment is received?
sliding-window
By default, what is the MTU size on a typical Ethernet network?
1500 bytes
Which of the following is not a task handled by a router?
A router forwards broadcasts over the network.
What field in an IPv4 packet informs routers the level of precedence they should apply when processing an incoming packet?
Differentiated Services (DiffServ)
What occurs when a collision happens on a network?
Each node on the network waits a random amount of time and then resends the transmission.
IPv4 and IPv6 use the same packet format.
False
TCP uses a four-step process called a four-way handshake to establish a TCP connection.
False
UDP provides error checking, but not sequencing.
False
What is NOT one of the three characteristics of TCP in its role as a reliable delivery protocol?
Framing
Ping and Pathping are provided by which protocol?
ICMP
The IP connectionless protocol relies on what other protocol to guarantee delivery of data?
TCP
You have been tasked with maintaining a network that is jumbo frame enabled. What does this mean?
The MTU for the network can be as high as 9198 bytes.
What happens when a router receives a packet with a TTL of 0?
The router drops the packet and sends an ICMP TTL expired message back to the host.
