MIS 3317 Quiz 4

The IEEE calls a 64-bit interface addresses that it designed a(n) ________ address. A) Extended Unique Identifier-64 B) Interface ID C) MAC address D) IP address

Extended Unique Identifier-64

T/F For an internal client to use NAT to communicate with an external webserver, the client must be configured to do so.

False

Which has stronger security? A) SSL/TLS B) IPsec C) Both have about equal security.

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

Convert the following EUI-48 address to a modified EUI-64 address: AA-00-00-FF-FF-00. A) aa00:ff:feff:ff0 B) ae00:ff:feff:ff0 C) aa00:00ff:feff:ff0 D) ae00:00ff:feff:ff0

ae00:00ff:feff:ff0

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

allows a firm to have more internal IP addresses

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

What security concern do ICMP echo request messages and echo response messages bring? A) attackers can disable the other host B) attackers can learn that the other host's IP address is in use C) attackers can change the other host's IP address D) all of the above.

attackers can learn that the other host's IP address is in use

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

The domain name system ________. A) is a way to find a host's IP addresses if your computer only knows the host's host name B) is a general naming system for the Internet C) both A and B D) neither A nor B

both A and B

In DNS, a group of resources under the control of an organization is called a ________. A) network B) subnet C) scope D) domain

domain

Pinging is to send ICMP ________ messages to the target host. A) echo request B) error advisement C) ping D) echo

echo request

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

entire length

Sequence numbers are ________ bits long. A) 8 B) 16 C) 24 D) 32

32

The total length of an IPv4 address is ________ bits. A) 8 B) 16 C) 32 D) 64

32

How many fields are there in an IPv6 address written for human reading? A) 8 B) 16 C) 32 D) 128

8

TCP has ________ flag field(s). A) 1 B) 2 C) 6 D) 9

9

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 a type of top-level domain? A) generic TLD B) specific TLD C) both A and B D) neither A nor B

generic TLD

If a router receives 20 packets in a row going to the same destination IP address, the standard calls for it to ________. A) go through all three steps for each B) use the decision it made for the first one C) send them via different routers to create load balancing along different routes D) none of the above

go through all three steps for each

Using a header checksum field to check for errors ________. A) increases routing time B) decreases routing time C) makes the protocol reliable D) checks the entire packet to look for errors

increases routing time

The almost-universal exterior dynamic routing protocol is ________. A) EIGRP B) OSPF C) both A and B D) neither A nor B

neither A nor B

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

In a network mask, the 1s correspond to the ________. A) network part B) subnet part C) host part D) Internet part

network part

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

Which of the following would be an SNMP interface object? A) number of rows in routing table B) whether the interface is undergoing testing C) both A and B D) neither A nor B

whether the interface is undergoing testing

If your subnet part is 8 bits long, you can have ________ subnets. A) 64 B) 128 C) 256 D) 254

254

You have a 20-bit network 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

our subnet part is 8 bits long. How many hosts can you have per subnet? A) 8 B) 14 C) 254 D) none of the above

254

Express the mask /24 in dotted decimal notation. A) 255.0.0.0 B) 255.255.0.0 C) 255.255.255.0 D) none of the above

255.255.255.0

Row 2707 has the mask /16 and the cost metric 20. Row 4400 has the mask /14 and the cost metric 10. The default row has a metric cost of 2. Which row will the router choose if both are matches? A) 2707 B) 4400 C) 2 D) impossible to determine

2707

Row 2707 has the mask /16 and the reliability metric 20. Row 4400 has the mask /16 and the reliability metric 10. Which row will the router choose if both are matches? A) 2707 B) 4400 C) either A or B D) The router will choose the default row.

2707

Deciding what interface and to what device to send the packet back out is step ________ in the routing process. A) 1 B) 2 C) 3 D) none of the above.

3

A mask has ________ bits. A) 8 B) 16 C) 32 D) 64

32

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

The main version of Internet Protocol in use today is IP version ________. A) 1 B) 4 C) 5 D) 6

4

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

8

The network part of an IPv4 address is ________ bits long. A) 8 B) 16 C) 32 D) 64

8

The first step in the routing process involves ________. A) selecting the best match row B) comparing the packet's destination IP address to all rows C) comparing the packet's destination IP address to matching rows D) selecting an interface

comparing the packet's destination IP address to all rows

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

The next-hop router listed in the last row is the ________ router. A) local B) best-match C) socket D) default

default

If the next-hop router field in the best-match row says "local", the router should address the packet to the ________. A) local router B) default router C) destination host D) none of the above.

destination host

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

domain registrars

In IPv6, the payload length gives the number of octets in the ________. A) entire packet B) entire packet minus the main header C) entire packet minus the main and extension headers D) entire packet minus the extension headers

entire packet minus the main header

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

error messages

In IPv6 addresses, ________ are separated by ________. A) segments; dots B) segments; colons C) fields; dots D) fields; colons

fields; colons

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

firewall

One-bit fields are called ________ fields. A) SYN B) flag C) ACK D) none of the above

flag

Simplification of IPv6 addresses must be standardized ________. A) to maximize text compression B) for the retrieval of IPv6 addresses in text fields of documents and spreadsheets C) both A and B D) neither A nor B

for the retrieval of IPv6 addresses in text fields of documents and spreadsheets

For human reading, IPv6 addresses are written in ________ notation. A) dotted decimal B) hexadecimal C) binary D) all of the above

hexasdecimal

If you see 0 in the Next Header Field of a header, what will follow this header? A) hop-by-hop options B) destination options C) mobility header D) none of the above

hop-by-hop options

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 packets in an IPv6 flow are handed ________. A) sequentially B) in parallel C) in ripples D) identically

identically

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 whatever ________ dynamic routing protocol it wishes. A) interior B) exterior C) both A and B D) neither A nor B

interior

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

In IPv6 address simplification, text characters are expressed in ________. A) upper case B) lower case C) either A or B D) neither A nor B

lower case

The Internet is organized in a ________. A) hierarchy B) ring C) mesh D) none of the above

mesh

For a particular domain name, a DNS server will have ________. A) a single record B) multiple records C) two records—one for IPv4 and one for IPv6. D) all of the above

multiple records

A border router connects different IP ________. A) subnets B) networks C) both A and B D) neither A nor B

networks

If any row other than the default row matches an IPv4 address, the router will ________. A) always choose the default row B) sometimes choose the default row C) never choose the default row D) impossible to determine

never choose the default row

Express the mask /18 in dotted decimal notation. A) 255.0.0.0 B) 255.255.0.0 C) 255.255.255.0 D) none of the above

none of the above

If your subnet part is 7 bits long, how many subnets can you have? A) 128 B) 256 C) 512 D) none of the above

none of the above

In IPv6, ESP protects the IP packet's_____. A) entire length B) payload C) header D) none of the above

none of the above

In the mask /14, how many 1s are there? A) 8 B) 16 C) 24 D) none of the above

none of the above

The hop limit field in IPv6 corresponds to the ________ field in IPv4 A) header checksum B) protocol C) length D) none of the above

none of the above

The version of Internet Protocol that is growing rapidly is IP version ________. A) 1 B) 2 C) 4 D) none of the above

none of the above

What is pushing IPv6 adoption now? A) pressure from ISPs B) pressure from the IETF C) pressure from ISO D) none of the above

none of the above

Which of the following would be an SNMP object? A) number of rows in routing table B) a managed switch C) both A and B D) neither A nor B

number of rows in routing table

UDP is a standard for ________. A) packet delivery B) supervision C) both A and B D) neither A nor B

packet delivery

the identification field in IPv4 is used for ________. A) route fragmentation B) frame fragmentation C) application message fragmentation D) packet fragmentation

packet fragmentation

In an IPv4 packet, the ________ field value tells the type of message contained in the IP packet's data field. A) data B) next-hop C) next-header D) protocol

protocol

The diffserv field in IPv4 is for ________. A) congestion B) compression C) quality of service D) options

quality of service

Decision caching ________. A) reduces routing costs B) is safe C) both A and B D) neither A nor B

reduces routing costs

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

A(n) ________ must find the best-matching row in its ________ table by comparing multiple row matches. A) Ethernet switch; switching B) router; routing C) both A and B D) neither A nor B

router; routing

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

routing

In a routing table, a ________ represents a route for a group of IP addresses. A) row B) column C) schema D) metric

row

Corporations wish to have ________ domain names. A) top-level B) second-level C) third-level D) none of the above

second-level

In IPsec, agreements about how security will be done are called ________. A) tranches B) security contracts C) service-level agreements D) security associations

security associations

The second step in the routing process involves ________. A) selecting the best-match row B) comparing the packet's destination IP address to all rows C) comparing the packet's destination IP address to matching rows D) selecting an interface

selecting the best-match row

IPv6 addresses help to ________. A) simplify writing B) simplify memorization C) both A and B D) neither A nor B

simplify writing

You need to use EIGRP if ________. A) you have TCP/IP traffic exclusively B) some of your traffic is TCP/IP traffic C) both A and B

some of your traffic is TCP/IP traffic

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

Which of the following is one of the three parts of an IPv4 address? A) subnet part B) subnet mask C) both A and B D) neither A nor B

subnet part

An internal router connects different IP ________. A) subnets B) networks C) both A and B D) neither A nor B

subnets

DNS is a ________ protocol. A) packet delivery B) supervisory C) both A and B D) neither A nor B

supervisory

Ping is for ________ messages. A) error advisory B) supervisory C) both A and B

supervisory

For cost reasons, you should ________ where you can, ________ where you must. A) switch; switch B) route; route C) switch; route D) route; switch

switch; route

The main benefit of IPv6 over IPv4 is ________. A) having two more bits in the IP address B) having two more bytes in the IP address C) the ability to have quality-of-service guarantees D) the ability to support more hosts

the ability to support more hosts

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

If you see an IPv4 address, what do you know for certain? A) the total length B) the length of the network part C) both A and B D) neither A nor B

the total length

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

top-level domain

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

top-level domain

TCP/IP standards are set at the ________. A) physical layer B) transport layer C) both A and B D) neither A nor B

transport layer

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

In decision cashing, when 20 packets arrive to the same destination IP address, the router will ________. A) go through all three steps for each B) use the decision it made for the first one C) send them via different routers to create load balancing along different routes D) none of the above

use the decision it made for the first one

In the IPv4 address 1.2.3.4, what is the network part? A) 1 B) 1.2 C) 1.2.3 D) We cannot say.

we cannot say

Which is a problem with IPv4 addresses? A) They are incompatible with wireless devices. B) They are too complex. C) Routers find it difficult to handle them. D) We have run out of them.

we have run out of them

There is a row for each host address in a(n) ________. A) routing table B) Ethernet switching table C) both A and B D) neither A nor B

Ethernet switching table

Good security is an enabler if a company wishes to use SNMP ________ commands. A) Get B) Set C) Trap D) Reset

Get

________ are the only extension headers that all routers must consider. A) Destination options B) Mobility headers C) Encapsulating security protocol headers D) Hop-by-hop options

Hop-by-hop options

The first stage of IPsec uses the ________ protocol. A) SSL/TLS B) AES C) IKE D) SHA

IKE

The SA is negotiated in the ________. A) IKE phase B) IPsec protection phase C) AES phase D) none of the above

IKE phase

In remote access VPNs, IPsec has an ________ at the corporate site. A) IPsec firewall B) IPsec gateway C) IPsec proxy server D) IPsec endpoint

IPsec gateway

SA protections are applied in the ________. A) IKE phase B) IPsec protection C) AES D) none of the above

IPsec protection

Which of the following allows packet fragmentation? A) IPv4 B) IPv6 C) both A and B D) neither A nor B

IPv4

Which of the following checks for errors in the packet header? A) IPv4 B) IPv6 C) both A and B D) neither A nor B

IPv4

Which has a better system for handling options beyond the main header? A) IPv4 B) IPv6 C) Both use the same method. D) Neither can handle options.

IPv6

A packet arrives at a router with destination IP address 62.17.3.2. Row 47 has the destination value 62.17.4.0. Is Row 47 a match? A) Yes B) No C) impossible to determine

No

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

OSPF

If I simplify the address 2001:0000:0000:00fe:0000:0000:0000:cdef, I get ________. A) 2001:0:0:fe::cdef B) 2001::fe:0:0:0:cdef C) 2001:0:0:fe:0:0:0:cdef D) 2001::00fe:0::cdef

a) 2001:0:0:fe::cdef

If I simplify the address 2001:0ed2:056b:00d3:00c0:abcd:0bcd:0fe0, I get ________. A) 2001:ed2:56b:d3:c0:abcd:bcd:0fe0 B) 2001:ed2:56b:d3:c:abcd:bcd:0fe C) either A or B D) neither A nor B

a) 2001:ed2:56b:d3:c0:abcd:bcd:0fe0

In SNMP, the manager communicates directly with a(n) ________. A) managed device B) agent C) object D) access point

agent

In a subnet mask, the 1s correspond to the ________. A) network part B) subnet part C) host part D) all of the above

all of the above

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

all of the above

IPsec protects ________ layer content. A) data link B) application C) both A and B D) neither A nor B

application

The terms payload and data field ________ in IPv6. A) are synonymous B) have nothing in common C) are related but different D) none of the above

are related but different

SAs in two directions ________. A) are always the same B) are always different C) are sometimes different

are sometimes different

A DHCP server provides a client with ________. A) one or more IP addresses for it to use B) the IP address of one or more DNS servers C) both A and B D) neither A nor B

both A and B

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

both A and B

IPsec is used for ________ VPNs. A) remote-access B) site-to-site C) both A and B D) neither A nor B

both A and B

In IPv6 addresses before simplification, there are ________ in a field. A) 4 symbols B) 16 bits C) both A and B D) neither A nor B

both A and B

In the final step, the router sends the packet ________. A) to a particular device B) out a particular interface C) both A and B D) neither A nor B

both A and B

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

both A and B

SLAs define ________. A) cryptographic methods B) cryptographic options C) both A and B D) neither A nor B

both A and B

Which of the following would be an SNMP object? A) number of rows in routing table B) system uptime (since last reboot) C) both A and B D) neither A nor B

both A and B

If I simplify the IPv4address 2001:0000:0000:00fe:3270:0000:0000:cdef., I get ________. A) 2001:0:0:00fe:3270:0:0:cdef B) 2001::00fe:3270:0:0:cdef C) 2001:0:0:00fe:3270::cdef D) 2001::00fe:3270::cdef

c) 2001:0:0:00fe:3270::cdef

f someone says that a 1-bit flag is not set, this means its value is ________. A) 0 B) 1 C) blank D) We cannot say.

0

The version number field in IPv6 has the value ________. A) 0001 B) 0100 C) 0101 D) 0110

0110

A router will discard a packet if the Time to Live (TTL) value in an arriving packet is ________. A) 0 B) 1 C) 254 D) 256

1

In a routing table, Rows 47 and 3497 both match the destination IP address of an arriving packet's IP address. What row will the router look at first when trying to find matching rows? A) 1 B) 47 C) 3497 D) the default row

1

Which of the following is a private IP address range? A) 10.x.x.x B) 128.171.x.x C) both A and B D) neither A nor B

10.x.x.x

Which of the following IPv4 addresses would be used for Internet transmission? A) 10.x.x.x B) 128.171.x.x C) both A and B D) neither A nor B

128.171.x.x

Your firm has a 22-bit network part and a 6-bit subnet part. How many hosts can you have per subnet? A) 6 B) 8 C) 14 D) none of the above

14

In the mask 255.255.255.0, how many 1s are there? A) 8 B) 16 C) 24 D) 48

24

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

If your routing prefix is 16 bits, how long is your subnet ID? A) 16 bits B) 32 bits C) 48 bits D) not possible to caculate

48 bits

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

64

The maximum application message size when UDP is used at the transport layer is approximately ________. A) 16,000 bytes B) 64,000 bytes C) 1 million bytes D) none of the above

64,000 bytes

The DNS ________ record is for the host name's ________ address A) A; IPv4 B) A; IPv6 C) AAAA; IPv4 D) none of the above

A; IPv4

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

Your firm has an 8-bit network part. If you need at least 200 subnets, what must your subnet part size be? A) 5 B) 6 C) 7 D) 8

D

________ is a general naming system for the Internet. A) NAT B) DNS C) DHCP D) Dotted decimal notation

DNS

In IPv4, the ________ field is used to deal with congestion in the Internet. A) ECN B) DiffServ C) time to live D) header checksum

ECN

Which of the following can route non-IP packets? A) OSPF B) EIGRP C) both A and B D) neither A nor B

EIGRP

Which of the following is more widely used? A) ESP B) AH C) Both are about equally widely used.

ESP

82) Four-way closes use ________ segments. A) FIN B) RST C) either A or B D) neither A nor B

FIN

A TCP ________ segment is a request to the other transport process to close a connection. A) FIN B) ACK C) CLS D) SYN

FIN

Which of the following segments types is acknowledged? A) FIN B) RST C) Both of the above are acknowledged. D) Neither A nor B is acknowledged.

FIN

T/F NAT is transparent to all applications.

False

If no other row matches, the router will select the ________ row as its best match. A) First B) Last C) either A or B, depending on the circumstances D) neither A nor B

Last

Which RFC standardizes how to write IPv6 addresses in canonical form? A) RFC 791 B) RFC 2707 C) RFC 5952 D) RFC 7600

RFC 5952

An abrupt close uses a ________ segment. A) FIN B) RST C) either A or B D) neither A nor B

RST

Which is less expensive to implement? A) SSL/TLS B) IPsec C) Both cost about the same to implement.

SSL/TLS

In SNMP, companies are often reluctant to use ________ commands because of security dangers. A) Get B) Set C) Trap D) Request

Set

Which of the following can handle an application message that is one megabyte in size? A) TCP B) UDP C) both A and B D) neither A nor B

TCP

T/F Options for major cryptographic methods are sometimes unacceptably weak and must be prohibited.

True

A packet arrives at a router with destination IP address 128.171.3.2. Row 47 has the destination value 128.171.0.0. Is Row 47 a match? A) Yes B) No C) impossible to determine

Yes

For 100,000 addresses, which will have fewer rows? A) a routing table B) an Ethernet switching table C) Both will be about the same number of rows.

a routing table

Router ports are called ________. A) sockets B) plugs C) interfaces D) ports

interfaces

Router sockets for wire and optical fiber cords are called ________. A) sockets B) plugs C) interfaces D) ports

interfaces

In IPv6 addresses before simplification, there are ________ in a field. A) 2 symbols B) 8 bits C) both A and B D) neither A nor B

neither A nor B

IPv6 uses ________ to know the packet length. A) header length fields B) total length fields C) payload lengths D) hop limits

payload lengths

Ethernet standards are set at the ________. A) physical layer B) transport layer C) both A and B D) neither A nor B

physical layer

If the local DNS server does not know an IP address and must contact a remote DNS server, which DNS server will return the response to the client? A) the local DNS server B) the remote DNS server C) either A or B D) No IP address will be returned to the client.

the local DNS server