Homework Chapter 3
32
A modern ASN consists of how many bits?
100
By default, the pathping command sends how many pings per hop?
flow label
In IPv6, what field is used to indicate what sequence of packets from one source to one or multiple destinations a packet belongs to?
sliding window
In a TCP segment, what field indicates how many bytes the sender can issue to a receiver while acknowledgement for the segment is outstanding?
IGMP
What IPv4 protocol handles multicasting for tasks such as videoconferencing or teleconferencing?
checksum
What TCP field below allows the receiving node to determine whether a TCP segment is corrupted during transmission?
The router drops the packet and sends an ICMP TTL expired message back to the host.
What happens when a router receives a packet with a TTL of 0?
framing
What is NOT one of the three characteristics of TCP in its role as a reliable delivery protocol?
-I
What parameter can be combined with the traceroute command to instruct it to use ICMP echo requests instead of UDP datagrams?
ICMPv6
What protocol replaces ARP, IGMP, and ICMPv4 on IPv6 based networks?
convergence time
What routing protocol criteria is defined as the time it takes to recognize a best path change in the event of a network outage?
link state
What type of routing protocol enables routers to communicate beyond neighboring routers, allowing each router to create a map of an entire network?
U
When viewing the routing table on a UNIX system, what flag indicates if a route is a usable route?
A router forwards broadcasts over the network.
Which of the following is not a task handled by a router?
Layer 4
At what layer of the OSI model would a TCP or UDP header be added to a payload?
TCP
The IP connectionless protocol relies on what other protocol to guarantee delivery of data?
show ip route
What command can be used on a Cisco router to view the routing table?
DiffServ (Differentiated Services)
What field in an IPv4 packet informs routers the level of precedence they should apply when processing an incoming packet?
-n
What netstat command option lists only current connections, including IP addresses and port numbers?
BGP
Which network routing protocol is a path vector protocol that sends updates between routers using TCP?