Quiz 2

Question 1

What advantages does IPv6 have over IPv4? (Choose all that apply.)

A) IPv6 uses DHCP for its configuration settings.

B) IPv6 uses a 128-bit address space.

C) IPv4 cannot support IPsec.

D) IPv6 incorporates IPsec.

Answer 1

B) IPv6 uses a 128-bit address space.

D) IPv6 incorporates IPsec.

Question 2

A Class C address has a first octet decimal range of __________ to ___________.

191, 224

192, 239

192, 223

172, 191

Answer 2

192, 223

Question 3

Which of the following is a method of hiding internal host IP addresses? (Choose all
that apply.)

A) Network Address Translation (NAT)

B) Proxy servers

C)Setting up software firewalls on all internal hosts

D) Configuring the computer to insert a fake source IP address into outgoing
messages

Answer 3

B) Proxy servers

A) Network Address Translation (NAT)

Question 4

The Class A address 127.0.0.1 is used for which of the following?

Broadcasting to all hosts on a subnet

Testing the local NIC

Experimentation

Testing the local TCP/IP software implementation

Answer 4

Testing the local TCP/IP software implementation

Question 5

Why is UDP considered unreliable?

Routers typically drop a large number of UDP packets.

The data is transmitted in clear text.

It is connectionless.

The header does not contain a checksum

Answer 5

It is connectionless.

Question 6

In CIDR notation, the IP address and subnet mask 191.9.205.22 255.255.192.0 are
written as __________.

191.9.205.22/19

191.9.205.22/16

191.9.205.22/18

191.9.205.22/17

Answer 6

191.9.205.22/18

Question 7

How do routers handle packets that are too large to pass through because of frame size
limitations?

Routers adjust their MTUs to accommodate the oversized packet.

Routers drop packets that are too large.

Routers break packets into smaller pieces called fragments.

Routers bounce packets back to the sender to be resized

Answer 7

Routers break packets into smaller pieces called fragments.

Question 8

Which of the following is an IPv6 protocol? (Choose all that apply.)

A) Multicast Listening Detection

B) Multicast Listener Discovery

C) Neighbor Discovery

D) IGMPv6

Answer 8

Multicast Listener Discovery

Neighbor Discovery

Question 9

A DNS server translates __________ to __________.

Question 9 options:

static addresses, DHCP

encrypted IP addresses, clear text

IP addresses, MAC addresses

FQDNs, IP addresses

Answer 9

FQDNs, IP addresses

Question 10

Why is fragmentation considered a security risk?

Fragments numbered 0 contain port information.

Fragmented packets cannot be assembled.

Fragments numbered 1 or higher are passed through filters.

Fragmentation is frequently used.

Answer 10

Fragments numbered 1 or higher are passed through filters.

Question 11

Which of the following is used for one-to-many communication, in which a single host
can send packets to a group of recipients?
Question 11 options:

unicast

netcast

multicast

anycast

Answer 11

multicast

Question 12

The number of TCP segments that can be sent before an acknowledgement must be
received is determined by the __________.

port number in use for the session

sliding window size

sequence number

transmission rate

Answer 12

sliding window size

Question 13

When one host wants to initiate a TCP session with another host, it sends a packet
with the flag set.

ACK

FIN

SYN

RST

Answer 13

SYN

Question 14

An ICMPv6 header is indicated by a Next Header value of __________.

54

58

60

22

Answer 14

58

Question 15

Compressing the IPv6 address 1080:0:0:0:8:800:200C:417A results in which of the
following?

1080::8:800:200C:417A

1080::8:8:::2::C:417A

1080::8:8::::20:C:417A

:1080::8:800:200C:417A

Answer 15

1080::8:800:200C:417A