Homework Chapter 3

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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?


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