CSC 385 - Ch. 2 Review Questions

The first byte or 8 bits of an IPv6 multicast address must be set to which of the following values? a. 0000 b. 1111 c. 1010 d. ffff

1111

For an IPv6 multicast address, how many bits are assigned to the group ID? a. 32 b. 64 c. 96 d. 112

112

How large is the IPv6 address space? a. 32 bits b. 64 bits c. 128 bits d. 256 bits

128 bits

Which RFC originally proposed CIDR? a. 1519 b. 1878 c. 1918 d. 2700

1519

Which RFC reserves three ranges of IP addresses for private use - a single Class A (10.0.0.0-10.255.255.255), 16 Class Bs (172.16.0.0-172.31.255.255), and 256 Class Cs (192.168.0.0-192.168.255.255)? a. 1517 b. 1518 c. 1878 d. 1918

1918

For an IPv6 aggregatable global unicast address, the FP or Format Prefix field contains how many bits in the identifier? a. 3 b. 8 c. 13 d. 24

3

The loopback address for a network interface using IPv4 is 127.0.0.1 and lets the computer user test the interface. What is the loopback address using IPv6? a. 1 b. ::1 c. ::1::1 d. :1:

::1

Which of the following protocols translates a numeric IP address to a physical numeric address? a. ICMP b. IP c. ARP d. RARP

ARP

Which of the following technologies is used to permit computers to translate numeric IP addresses to MAC layer addresses? a. ARP b. RARP c. Reverse proxying d. Subnet masking

ARP

What technique may be performed by boundary devices that include proxy server capabilities to replace private IP addresses with one or more public IP addresses as outbound traffic exits the server, and to replace such public addresses with their proper private equivalents as incoming traffic passes through the server? a. IP renumbering b. Supernetting c. Address masquerading d. Subnetting

Address masquerading

Which of the following types of IPv4 addresses includes the most host addresses? a. Class A b. Class B c. Class C d. Class D e. Class E

Class A

Which class of IP addresses are used for multicast communications, in which a single address may be associated with more than one network host machine? a. Class A b. Class B c. Class C d. Class D

Class D

Previously, IPv6 specified that interface identifiers followed which format, which specifies a unique 64-bit interface identifier for each interface? a. RFC 4941 b. EUI-64 c. EULA-64 d. IEEE 802.64v6

EUI-64

What name is given to a device that interconnects multiple IP networks or subnets? a. subnet mask b. IP gateway c. layer-3 switch d. network address

IP gateway

a type of networking device that combines switch, router, and network management functions within a single box a. Loopback address b. Application-specific integrated circuits c. link-local address d. layer 3 switch

Layer 3 switch

Which of the following terms is a synonym for a physical numeric address? a. hardware address b. MAC layer address c. PROM address d. RIPL address

MAC layer address

Which technology allows networks use multiple private IPv4 addresses internally and maps them to one or more public IPv4 addresses externally? a. DNS b. IP gateway c. NAT d. VoIP

NAT

Which of the following services perform address hiding? (Choose all that apply.) a. e-mail b. FTP c. NAT d. proxy

NAT, proxy

What protocol is used to translate MAC layer addresses into numeric IP addresses? a. ARP b. RARP c. RIP d. IP

RARP

Which of the following IPv6 addresses are the same based on the correct use of zero compression? (Choose all that apply.) a. fe80::2d57:c4f8::80d7 b. fe80:0000:2d57:c4f8:0000:80d7 c. fe8::2d57:c4f8::8d7 d. fe80:0:2d57:c4f8:0:80d7

a, b

To which of the following limitations are private IP addresses subject to? (Choose all that apply.) a. may not be routed on the Internet b. may not be used without permission from ICANN or an ISP c. will not work with NAT software d. may not work with protocols that require secure end-to-end connections

a, d

an address that can be combined with other addresses into a single entry in the router table a. link-local address b. anycast address c. loopback address d. aggregatable global unicast address

aggregatable global unicast address

packets goes to the nearest single instance of this address a. link-local address b. anycast address c. loopback address d. layer 3 switch

anycast address

Which of the following address types are supported by IPv6? (Choose all that apply.) a. anycast b. broadcast c. multicast d. unicast

anycast, multicast, unicast

allows internetwork devices to perform complex address recognition and management functions that can keep up with data volumes and time-sensitive processing needs a. Loopback address b. Application-specific integrated circuits c. link-local address d. layer 3 switch

application-specific integrated circuits

An IPv6 unicast address is made up of which of the following? a. a 32-bit interface ID and a 96-bit network portion b. a 64-bit interface ID and a 64-bit network portion c. a 96-bit interface ID and a 32-bit network portion d. a 64-bit interface ID, a 32-bit network portion, and a 32-bit broadcast address

b

IPv6 requires each device on the network to have its own unique address or identifier, with one exception: a. Mobile devices may use multiple identifiers because they frequently move from one network zone to the next. b. A host with multiple interfaces providing dynamic load balancing can use a single identifier for all interfaces. c. Network devices in a multicast group all use a single, unique identifier for their interfaces. d. Multiple devices on a local network may share the same anycast identifier.

b

Which of the following represents a network address that all hosts on a network must read? a. loopback b. hop c. broadcast address d. dot squad

broadcast address

A default gateway is... a. any IP router b. an IP router attached to the Internet c. an IP configuration element that names the router/gateway for a particular subnet d. an IP configuration element that names the boundary router to the Internet

c

What does IPv4 renumbering involve? a. assigning new IP addresses to all boundary devices b. assigning new IP addresses to all routers c. assigning new IP addresses to all servers and routers d. assigning new IP addresses to all network interfaces

d

Which term is used to describe the data frame crossing a router? a. firewall b. hop c. loopback d. dot squad

hop

in IPv6 addressing, a bit string that uniquely identifies a particular interface a. scope identifier b. loopback address c. application-specific integrated circuits d. interface identifier

interface identifier

Which of the following represents an improvement of IPv6 over IPv4? (Choose all that apply.) a. larger address space b. better security c. improved broadcast support d. better support for mobile IP

larger address space, better security, better support for mobile IP

an addressing scheme that is designed to be used only on a single segment of a local network a. Loopback address b. Application-specific integrated circuits c. link-local address d. layer 3 switch

link-local address

Which of the following address types are used for local network communications in IPv6? (Choose all that apply.) a. link-layer b. link-local c. local-use d. site-local

link-local, site-local

an IPv6 address that is all zeros except for the very last bit, which is set to 1 and may be represented as ::1 in compact notation a. Loopback address b. Application-specific integrated circuits c. link-local address d. layer 3 switch

loopback address

In IPv6, _________________________ addresses are used to send an identical message to multiple hosts.

multicast

Which address is used to identify the sender and receiver in an IP packet header? a. domain name b. symbolic name c. numeric IP d. return

numeric IP

Which of the following is an 8-bit number that denotes various portions of an IPv4 address? a. byte b. dotted decimal c. octet d. bit string

octet

What type of address is a six-byte numeric address, burned into firmware (on a chip) by network interface manufacturers? a. symbolic address b. logical numeric address c. reverse proxy address d. physical numeric address

physical numeric address

____________________ informs the network interface card to pass packets sent to that address to the IP stack so their contents can be read, and tells the IP gateway to forward such traffic onto the physical network, where the listening network interface resides.

registration

a way of reducing the number of individual routing table entries that routers must manage a. scope identifier b. route aggregation c. aggregatable global unicast address d. layer 3 switch

route aggregation

a 4-bit field limiting the valid range for a multicast address a. scope identifier b. loopback address c. application-specific integrated circuits d. interface identifier

scope identifier

Which of the following can be used to replace internal network addresses with one or more different addresses so the traffic that actually travels over the public Internet does not reveal the address structure of the internal network to outsiders? a. loopback b. proxy server c. subnet mask d. layer-3 switch

server

The activity of stealing (borrowing) bits from the host portion to further subdivide the network portion of an address is called ____________________.

subnetting

A Class A network address of 12.0.0.0 is written as 12.0.0.0/8 in prefix notation. True or false?

true

IP addresses can be represented as domain names to make it possible for users to identify and access resources on a network. True False

true

Zero compression is a method that allows a word containing contiguous zeros in an IPv6 address to be replaced by double colons. True or false?

true

Native IPv6 addresses in a URL use which of the following characters to enclose the literal IPv6 address, according to RFC 2732 and later by 3986? a. two colons b. two braces c. two brackets d. two forward slashes

two brackets

To be valid, any domain name must correspond to at least one of which of the following? a. loopback address b. unique numeric IP address c. firewall d. IP gateway

unique numeric IP address

In IPv6, which address contains all zeros and can be represented as two colon characters (::) in normal notation? a. anycast b. broadcast c. multicast d. unspecified

unspecified

In which subnetting technique can a single address to be subdivided into multiple subnets, in which subnets need not all be the same size? a. IP gateway b. constant-length subnet masking c. variable-length subnet masking d. IP renumbering

variable-length subnet masking