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