Networking Fundamentals

Front 1

__________ is a collection of standards organizations representing 162 countries.

Back 1

ISO

Front 2

Which layer of the OSI model ensures, error-free delivery, in sequence, without losses?

Back 2

Transport Layer

Front 3

For greater network efficiency, segmentation is preferred. (True or False)

Back 3

True

Front 4

All protocols are routable. (T / F)

Back 4

False

Front 5

Traditional switches operate at the ____ layer of the OSI model.

Back 5

Data Link Layer (2)

Front 6

Bridges operate at which layer of the OSI model?

Back 6

Data Link Layer (2)

Front 7

What is the default subnet mask for the following IP address: 154.13.44.87?

Back 7

255.255.0.0

Front 8

An IPv6 address for which uniqueness has been verified and from which unicast traffic can be sent and received is classified as _________.

Back 8

Valid

Front 9

A class ____ network class is reserved for special purposes.

Back 9

Class D Network

Front 10

If your network does not need or use APIPA, it must be uninstalled to avoid conflicts. (T/F)

Back 10

False

Front 11

Which of the following routing protocols has the poorest convergence time?

Back 11

RIP

Front 12

Which of the following devices separates broadcast domains?

Back 12

Router

Front 13

Which of the following uses port 22 by default?

Back 13

SSH

Front 14

SIP regulates ____ for VoIP or video-over-IP clients and servers.

Back 14

call signaling and control

Front 15

TCP ensures reliable data delivery through sequencing and ____________________.

Back 15

Checksums

Front 16

____ messaging is a service that makes several forms of communication available from a single user interface.

Back 16

Unified

Front 17

Routers use IGMP to:

Back 17

Identify nodes belonging to a multicast group

Front 18

What protocol is used to transfer mail between a Sendmail server and a Microsoft Exchange server?

Back 18

SMTP

Front 19

Which DNS record type will contain the host’s IPv6 address?

Back 19

AAAA

Front 20

You are troubleshooting a problem that you suspect is caused by an Internet gateway failure. Assuming your organization relies on only one Internet gateway, which of the following symptoms would lead you to focus on that gateway as the source of the problem?

Back 20

All users on a network are unable to retrieve e-mail.

Front 21

Gateways are part of which layer of the OSI model?

Back 21

Apllication Layer (7)

Front 22

Routers are part of which layer of the OSI model?

Back 22

Network Layer (3)

Front 23

Network Interface Cards (NIC's) are part of which layer(s) of the OSI model?

Back 23

Physical Layer (1)

Data Link Layer (2)

Front 24

Hubs are part of which layer of the OSI model?

Back 24

Physical Layer (1)

Front 25

Repeaters are part of which layer of the OSI model?

Back 25

Physical Layer (1)

Front 26

The first octet of a class _____ network ranges from 1-126.

Back 26

Class A IPv4 Network

Front 27

The first octet of a class _____ network ranges from 128-191.

Back 27

Class B IPv4 Network

Front 28

The first octet of a class _____ network ranges from 191-223.

Back 28

Class C IPv4 Network

Front 29

255.0.0.0 is the default mask for a Class ____ network.

Back 29

Class A Network

Front 30

255.255.0.0 is the default mask for a Class ____ network.

Back 30

Class B Network

Front 31

255.255.255.0 is the default mask for a Class ____ network.

Back 31

Class C Network

Front 32

Which layer of the OSI model provides interface between software applications and network for interpreting application requests and requirements?

Back 32

Application Layer (7)

Front 33

Which layer of the OSI model allows hosts and applications to use common language; performs data formatting, encryption, and compression?

Back 33

Presentation Layer (6)

Front 34

Which layer of the OSI model establishes, maintains, and terminates user connections?

Back 34

Session Layer (5)

Front 35

Which layer of the OSI model ensures accurate delivery of data through flow control, segmentation and reassembly, error correction, and acknowledgment?

Back 35

Transport Layer (4)

Front 36

Which layer of the OSI model establishes network connections, translates network addresses into their physical counterparts and terminates routing?

Back 36

Network Layer (3)

Front 37

Which layer of the OSI model packages data in frames appropriate to network transmission methods?

Back 37

Data Link Layer (2)

Front 38

Which layer of the OSI model manages signaling to and from physical network connections?

Back 38

Physical Layer (1)

Front 39

What is the function of the IPv6 Special Address(es):

::1

Back 39

Loopback

Front 40

What is the function of the IPv6 Special Address(es):

Addresses beginning with FC00

Back 40

Private

Front 41

What is the function of the IPv6 Special Address(es):

Addresses beginning with FE80

Back 41

Link-local unicast

Front 42

What is the function of the IPv6 Special Address(es):

Addresses beginning with FEC0

Back 42

Site-Local unicast

Front 43

What is the function of the IPv6 Special Address(es):

Addresses beginning with FF0x

Back 43

Multicast

Front 44

Which data link sublayer manages flow control?

Back 44

LLC

Front 45

At which layers of the OSI model are gateways capable of functioning?

Back 45

At all layers

Front 46

____ is more efficient at carrying messages that fit into one data packet.

Back 46

UDP

Front 47

Ports ranging from 49152 - 65535, open for use without restriction are called ______.

Back 47

Dynamic Ports

Front 48

____ are often considered third level support.

Back 48

Help desk coordinators

Front 49

IP address 169.254.23.5 may have been issued by _____.

Back 49

APIPA

Front 50

______ operate between the 4th and 7th layers.

Back 50

Content switches

Front 51

The ______ layer is responsible for converting electrical signals into voltages.

Back 51

Physical Layer (1)

Front 52

____________________ are documented agreements containing technical specifications or other precise criteria that stipulate how a particular product or service should be designed or performed.

Back 52

Standards

Front 53

Protocols that can span more than one LAN (or LAN segment) are ____________________, because they carry Network layer addressing information that can be interpreted by a router.

Back 53

Routable

Front 54

Not all Transport layer protocols are concerned with reliability. (T/F)

Back 54

True

Front 55

____________________ protocols establish a connection with another node before they begin transmitting data.

Back 55

Connection oriented

Front 56

In which OSI model layer does TCP operate?

Back 56

Transport

Front 57

Bridges operate at which layer of the OSI model?

Back 57

Data link Layer (2)

Front 58

Which of the following would you use to connect networks using completely different protocols?

Back 58

Gateway

Front 59

CIDR notation takes the form of the network ID followed by a(n) ____, followed by the number of bits that are used for the extended network prefix.

Back 59

Forward slash (/)

Front 60

What is the default subnet mask for the following IP address: 154.13.44.87?

Back 60

255.255.0.0

Front 61

What is the default subnet mask for a Class C network?

Back 61

255.255.255.0

Front 62

Which of the following devices separates broadcast domains?

Back 62

Routers

Front 63

Which of the following routing protocols has the poorest convergence time?

Back 63

RIP

Front 64

What is the default port for HTTPS?

Back 64

443

Front 65

IPTV, videoconferencing, streaming video, and IP multicasting belong to the range of services known as ____.

Back 65

Video over IP

Front 66

What can RTCP do that RTP cannot?

Back 66

Report on the degree of packet loss and delay in a connection

Front 67

What protocol manages addressing for multicast groups?

Back 67

IGMP

Front 68

____ is the use of one network to simultaneously carry voice, video, and data communications.

Back 68

Convergance

Front 69

____ is a terminal emulation protocol used to log on to remote hosts using the TCP/IP protocol suite.

Back 69

Telnet

Front 70

Which DNS record type will contain a mail server address?

Back 70

MX

Front 71

A help desk is typically staffed with ____________________ - people proficient in workstation and network troubleshooting.

Back 71

Help desk analysts

Front 72

____________ determines standards for the electronics industry and other fields, such as chemical and nuclear engineering, health and safety, and construction.

Back 72

ANSI

Front 73

Network functions are associated with only one layer of the OSI model. (T/F)

Back 73

False

Front 74

____________________ is the process of gauging the appropriate rate of transmission based on how fast the recipient can accept data.

Back 74

Flow control

Front 75

In which of the following situations would it be most desirable to use a connectionless Transport layer protocol?

Back 75

When viewing a movie on the web

Front 76

Data-link layer protocols break large data units into ____.

Back 76

Frames

Front 77

Transport layer protocols break large data units into ____.

Back 77

Segments

Front 78

In IPv4 addressing, each IP address is a unique ____ number.

Back 78

32-Bit

Front 79

A(n) ____ address represents any one interface from a group of interfaces, any one of which can accept a transmission.

Back 79

Anycast

Front 80

In IPv6, each address contains a(n) ____, or a variable-length field at the beginning of the address that indicates what type of address it is.

Back 80

Format prefix

Front 81

In dotted decimal notation, a(n) ____ separates each decimal.

Back 81

Period

Front 82

____ routing is a technique in which a network administrator programs a router to use specific paths between nodes.

Back 82

Static

Front 83

Using RIP, what is the maximum number of hops a packet can take between its source and its destination?

Back 83

15

Front 84

What is the default port for NTP?

Back 84

123

Front 85

TCP is a(n) ____ subprotocol.

Back 85

Connection-oriented

Front 86

What type of video-over-IP service relies on full-duplex communication?

Back 86

Videoconfrencing

Front 87

Watching a YouTube video on the Web is an example of which of the following types of video-over-IP services?

Back 87

Streaming video

Front 88

What are two benefits of using IMAP4 relative to POP3?

Back 88

It allows users to review and delete mail without downloading it from the mail server.

It enables multiple users to easily share a central mailbox.

Front 89

Which of the following utilities could you use to log on to a UNIX host?

Back 89

Telnet

Front 90

Ports ranging from 0 to 1023; assigned to processes that only the operating system or an administrator of the system can access. are called ___________.

Back 90

Well-known ports

Front 91

Which of the following is an example of a network change that could cause only one group of workstations out of the dozen workgroups in your organization to lose connectivity to a local file server?

Back 91

The configuration on a switch in the telecommunications closet is upgraded.