Deck 11: Internet Operation

Question 1

The source and destination address fields in the TCP header each contain a 32-bit Internet address.

Answer 1

False

Question 2

The maximum number of Class A network addresses is __________.

A)16
B)126
C)128
D)256

Answer 2

B

Question 3

A digital versatile disc can store approximately 100 times more data than a CD-ROM.

Answer 3

False

Question 4

An internet routing protocol is used to exchange information about reachability and traffic delays,allowing each router to construct a next-hop routing table for paths through the internet.

Question 5

Which of the following describes class A networks?

A)Many networks,each with a few hosts
B)Medium number of networks,each with a medium number of hosts
C)Few networks,each with many hosts
D)A dedicated network,with a set number of hosts

Question 6

In an internet environment,multicasting is an easier undertaking.

Question 7

Which of the following describes class B networks?

A)Many networks,each with a few hosts
B)Medium number of networks,each with a medium number of hosts
C)Few networks,each with many hosts
D)A network dedicated to multicast applications

Question 8

IGMP takes advantage of the broadcast nature of a LAN to provide an efficient technique for the exchange of information among multiple hosts and routers.

Question 9

Typically,more complex routing protocols are used between autonomous systems within a larger internet and relatively simple routing protocols are used within each autonomous system.

Question 10

Subnets are used where the number of networks exceeds the number of hosts within a specific company or organization.

Question 11

The Internet and the Internet Protocol is designed to provide differentiated services depending on whether traffic is elastic or inelastic.

Question 12

The left-most bits of a IP address determine whether it is Class A,B,or C.

Question 13

One way to assure that the packet is received by all members of the group is to broadcast a copy of each packet to each network in the configuration,over the least-cost route for each network.

Question 14

Two notable consumer electronic gadgets that are impacting the traffic load on networks are the digital versatile disc and the digital still camera.

Question 15

Both the broadcast and multiple unicast strategies are inefficient because they generate unnecessary copies of the source packet.

Question 16

A QoS facility allows the Internet to treat all classes of traffic equally in order to optimize the services provided to all users.

Question 17

Which of the following describes class C networks?

A)Many networks,each with a few hosts
B)Medium number of networks,each with a medium number of hosts
C)Few networks,each with many hosts
D)A dedicated network,with a set number of hosts

Question 18

Typically,an IP address refers to an individual host on a particular network.

Question 19

The IP address is assigned to a network interface on a host when ________.

A)the OS boots up
B)the PC connects to the Internet
C)an application is run
D)the user requests one

Question 20

Most IP addresses consist of a network identification and a host identification within that network.

Question 21

A description of the nature of service to be provided,the expected performance level of the service,and the process for monitoring and reporting the service level,is information that is typically included in a _________ .

A)SLA
B)QoS
C)LAN
D)DS

Question 22

A practical application for multicasting is:

A)teleconferencing
B)multimedia
C)database
D)all of the above

Question 23

__________ is an identifier for a single interface in which a packet is delivered to the interface identified by that address.

Question 24

Multiple IP addresses referring to a block of CIDR addresses can be identified with a single mask,a process known as __________ .

A)uni-masking
B)OSPF
C)supernetting
D)block masking

Question 25

Three functional procedures are involved in the Border Gateway Protocol (BGP): neighbor acquisition,neighbor reachability,and __________.

Question 26

The term _________ refers to two routers that share the same network.

Question 27

IPv6 allows three types of addresses: unicast,anycast,and _________.

Question 28

IPv6 includes ________ address fields.

A)16-bit
B)32-bit
C)64-bit
D)128-bit

Question 29

Today,_________ is the most widely accepted QoS mechanism in enterprise networks.

A)AS
B)SLA
C)DS
D)SSL

Question 30

_________ is an identifier for a set of interfaces in which a packet is delivered to all interfaces identified by that address.

Question 31

_________ makes more efficient use of the 32-bit IP address than the class-based method primarily because it makes more efficient use of the address space.

Question 32

To identify a host on the Internet,each host is assigned a unique IP address,which consists of two logical components: a network component and a ________ component.

Question 33

The magnitude of delay variation,called ________ ,is a critical factor in realtime applications.

A)jitter
B)stuttering
C)supernetting
D)latency

Question 34

_________ is an identifier for a set of interfaces in which a packet is delivered to one of the interfaces identified by that address (the "nearest" one,according to the routing protocols' measure of distance).

Question 35

The _________ in an internet are responsible for receiving and forwarding packets through the interconnected set of networks,making routing decisions based on knowledge of the topology and traffic / delay conditions of the internet.

A)gateways
B)routers
C)channels
D)links

Question 36

An autonomous system (AS)exhibits which of the following characteristics?

A)is a set of routers and networks managed by a single organization
B)consists of a group of routers exchanging information via a common routing protocol
C)except in times of failure is connected
D)all of the above

Question 37

Which of the following detailed performance parameters might be included in an SLA?

A)service performance parameters,such as expected throughput,drop probability,and latency
B)constraints on the ingress and egress points at which the service is provided,indicating the scope of the service
C)traffic profiles that must be adhered to for the requested service to be provided
D)all of the above

Question 38

The IP address is obtained either by looking it up in a configuration file or dynamically,via the ______________.

Question 39

The value of the DS field,referred to as the DS ________,is the label used to classify packets for differentiated services.

A)QoS
B)codepoint
C)SLA
D)supernetting

Question 40

IP addresses are usually written in what is called ___________ notation ,with a decimal number representing each of the octets of the 32-bit address.

Question 41

_________ traffic can adjust,over wide ranges,to changes in delay and throughput across an internet and still meet the needs of its applications.

Question 42

_________ traffic does not easily adapt,if at all,to changes in delay and throughput across an internet.

Question 43

__________ services do not provide QoS on the basis of flows but rather on the basis of the needs of different groups of users.

Question 44

One way to assure that the packet is received by all members of the group is to ___________ a copy of each packet to each network in the configuration,over the least-cost route for each network.

Question 45

Using what is known as a link state routing algorithm,the ________ protocol is widely used as an interior router protocol in TCP / IP networks.