IS 435 Ch 9

You have a 20-bit network part (excluding the 4-bit subnet part) and a 4-bit subnet part. How many hosts can you have per subnet? A) 15 B) 16 C) 254 D) none of the above

254

In an IPv6 global unicast address, the interface ID is ________ bits long. A) 8 B) 16 C) 64 D) Its size varies

64

In IP subnet planning, you need to have at least 130 subnets. How many bits should your subnet part have? A) 6 B) 7 C) 8 D) none of the above

8

The routing prefix in IPv6 is like the ________ part in an IPv4 address. A) network B) subnet C) host D) both A and B

network

NAT enhances security by ________. A) preventing sniffers from learning internal IP addresses B) encryption C) both A and B D) neither A nor B

preventing sniffers from learning internal IP addresses

The highest-level DNS servers are called ________. A) root servers B) top-level domain servers C) both A and B D) neither A nor B

root servers

In the Border Gateway Protocol, "gateway" means ________. A) firewall B) switch C) router D) none of the above

router

Dynamic ________ protocols allow routers to transmit routing table information to one another. A) routing B) transport C) synchronization D) none of the above

routing

What field in an IPv6 global unicast address corresponds to the subnet part of an IPv4 address? A) global routing prefix B) subnet ID C) interface ID D) none of the above

subnet ID

An advantage of using DHCP to configure clients is that ________. A) the configuration information will be up-to-date B) the configuration will be done securely C) both A and B D) neither A nor B

the configuration information will be up-to-date

Your firm has a 22-bit network part (excluding the 6-bit subnet part) and a 6-bit subnet part. How many usable hosts can you have per subnet?

14

If the subnet ID in an IPv6 address is 32 bits, how long is the routing prefix? A) 16 bits B) 32 bits C) 64 bits D) none of the above

32 bits

Your firm has a 22-bit network part. What subnet part would you select to give at least 10 subnets? A) 2 bits B) 3 bits C) 4 bits D) none of the above

4 bits

The DNS ________ record is for the host name's ________ address A) AAAA; IPv4 B) AAAA; IPv6 C) both A and B D) neither A nor B

AAAA; IPv6

Which of the following is used in ESP? A) ESP header B) ESP trailer C) Integrity check value (ICV) D) all of the above

All of the above

In transport mode, ESP fields surround an IPv4 packet's ________. A) entire length B) header C) data field D) none of the above

Data field

Which has stronger security? A) SSL/TLS B) IPsec C) Both have about equal security. D) We don't know

IPsec

________ is the process of presenting external IP addresses that are different from internal IP addresses used within the firm. A) DNS B) NAT C) DHCP D) none of the above

NAT

In NAT, the ________ creates new external source IP addresses and port numbers. A) NAT router B) switch C) source host D) destination host

NAT router

________ is an interior dynamic routing protocol. A) OSPF B) BGP C) both A and B D) neither A nor B

OSPF

Which protects more of the original IP packet? A) transport mode B) tunnel mode C) Both provide the same protection to the IP packet

Tunnel Mode

A company has a domain name. What else must it have before it can make a website available to the public? A) a DNS server to host its domain name B) the website itself C) both A and B D) neither A nor B

a DNS server to host its domain name the website itself

NAT ________. A) allows a firm to have more internal IP addresses B) provides some security C) both A and B D) neither A nor B

allows a firm to have more internal IP addresses provides some security

In a large company, you want ________. A) as big a routing prefix as you can have B) a medium-size routing prefix C) as small a routing prefix as you can have D) The size of the routing prefix is of no importance

as small a routing prefix as you can have

If your local DNS server does not know the host name of an IP address, it will get the address from a(n) ________. A) root DNS server B) proxy DNS server C) authoritative DNS server D) none of the above

authoritative DNS server

Convert the following EUI-48 address to a modified EUI-64 address: B0-00-00-FF-FF-00. A) b000:ff:feff:ff00 B) b200:ff:feff:ff00 C) b100:00ff:feff:ff00 D) b200:00ff:feff:ff00

b200:00ff:feff:ff00

Companies get second-level domains from ________. A) the IETF B) domain registrars C) the Internet Society D) the United States Government

domain registrars

ICMP is used for error messages B) configuration messages C) routing messages D) none of the above

error messages

A step in creating an EUI-64 is dividing a 48-bit MAC address in half and inserting ________ in the center. A) the interface ID B) the subnet ID C) fffe D) 0000

fffe

Which is NOT one of the three parts of a public IPv6 unicast address? A) subnet ID B) routing prefix C) host part D) All of the above are parts in a public IPv6 unicast address

host part

The part of an IPv6 global unicast address that designates the host is called the ________. A) host part B) interface ID C) routing prefix D) none of the above

interface ID

A company is free to select its ________. A) interior dynamic routing protocol B) exterior dynamic routing protocol C) both A and B D) neither A nor B

interior dynamic routing protocol

".com" is a ________. A) root domain B) top-level domain C) second-level domain D) none of the above

top-level domain

You need to use EIGRP if ________. A) you have TCP/IP traffic exclusively B) your traffic is not TCP/IP traffic C) both A and B

your traffic is not TCP/IP traffic