nt 2640 studyguide

Which two of the following are Layer 2 protocols commonly used in WANs?
PPP and HDLC
Which of the following describes a collision domain?
Devices connected to an Ethernet hub
Which of the following protocol operates at the OSI model Transport Layer?
UDP
What process is used by a DNS server to add a UDP header to the contents of a DNS query response, followed by adding an IP header, and then adding a data link header and trailer is an example of what?
Data Encapsulation
The term autonomous system (AS) refers to the collection of metrics for routes to a particular network.
False
Given the 5 bits of a subnet mask for the host portion of an IP addresses are available?
30
The interface type at the demark for a DS1/T1 circuit at is ____.
RJ-48
Given the following routing table on a router, which next hop will the router select given the IP packet with the destination address of: 19.48.254.3
Router 2
Which address below belongs to the Class A network range?
126.254.1.45
Which of the following dynamic routing protocols is an exterior gateway protocol?
BGP
Out of the following which does a router normally use when making a decision about routing an IP packet?
Destination IP Adress
How many bits comprise the network portion of a Class C address?
24
A broadcast address is an address that only a single host listens to on the network.
False
How many usable host addresses are available in a Class C network?
254
Which protocol is responsible for resolving MAC addresses from IP addresses?
ARP
What is the broadcast address for the IP subnet 8.5.8.232 mas 255.255.0.0
8.5.255.255
Which is the well-known port number for DNS?
53
What is the CIDR(slash) notation equivalent to the dotted decimal of 255.255.255.252
/30
Classful IP addressing____
Allows only the default class A,B, and C network mask rules
What is the dotted decimal equivalent to the slash notation of /25
255.255.255.128
The Cisco IP address secondary address assignment option