Deck 9: Computer Networks

Question 1

A point-to-point transmission line is laid over the shortest path and connected directly to both end nodes

Answer 1

True

Question 2

​To connect four end nodes in a mesh technology, three transmission lines and six connections per node are required.

Answer 2

False

Question 3

​Guaranteeing service quality is a simple matter in most IP networks.

Answer 3

False

Question 4

Newer Ethernet standards used a bus logical topology, Category 5 twisted-pair cable, and CSMA/CD.

Question 5

​Networks using bus and ring physical topologies are commonly used today.

Question 6

​The OSI model predates the TCP/IP model by almost a decade.

Question 7

​WiMAX is a replacement for and an extension to the IEEE 802.11 standards.

Question 8

​The 802.1 and 802.2 standards correspond roughly to the OSI Data Link layer.

Question 9

​To date, most WiMAX adoption has occurred in urban areas.

Question 10

​RARP converts IP addresses to physical network addresses.

Question 11

In a physical delivery system using store-and-forward, the central nodes are transfer points located at or near the junction of major roadways or air routes.

Question 12

​Star topologies now dominate physical network topology for wired networks.

Question 13

​An end node is a device such as a workstation, server, or printer that can be the source or destination of a message.

Question 14

Internet Protocol version 6 (IPv6) is an updated version of IPv4 defined in the late 1990s and first deployed in the mid-2000s.

Question 15

The 32-bit addresses for an IP node are defined in Internet Protocol version 6 (IPv6).

Question 16

​The marketplace ultimately decides which technologies and products succeed.

Question 17

​10 Gigabit Ethernet is based on the 802.3ae (2002) and the 802.3ak (2004) standards.

Question 18

​Mesh topology is practical for all but very small networks.

Question 19

​The characteristics differentiating the physical topologies include the length and routing of network cable, type of node connections, data transfer performance, susceptibility of the network to failure, and cost.

Question 20

​Ethernet is a LAN technology, developed by Xerox in the early 1970s, that's closely related to the IEEE 802.3 standard.

Question 21

​A ____ intelligently forwards messages between two or more networks.

A) ​hub
B) ​switch
C) ​router
D) ​bridge

Question 22

A network for an entire campus is known as a(n) ____ and includes end nodes, LANs, zone networks, the campus backbone network, and central nodes.

A) metropolitan area network
B) wide area network
C) regional network
D) enterprise network

Question 23

The ____ layer includes communication protocols used by programs that make and respond to high-level requests for network services.

A) ​Presentation
B) ​Data Link
C) ​Network
D) ​Application

Question 24

____ topology is the path messages traverse as they travel between end and central nodes.

A) Physical
B) Virtual
C) Somatic
D) ​Logical

Question 25

A ____ connects all LAN central nodes in a group of buildings.

A) zone network
B) metro network
C) wide area network
D) ​proximity network

Question 26

The ____ layer is the interface between network software and hardware.

A) ​Session
B) ​Data Link
C) ​Application
D) ​Network

Question 27

The written format of 128-bit IP addresses is called ____ notation.

A) ​dotted decimal
B) ​dotted hexadecimal
C) ​colon decimal
D) ​colon hexadecimal

Question 28

IP accepts messages called ____ from Transport-layer protocols and forwards them to their destination.

A) ​datagrams
B) ​frames
C) ​blocks
D) ​packets

Question 29

​The term ____ refers to the spatial organization of network devices, physical routing of network cabling, and flow of messages from one network node to another.

A) ​network infrastructure
B) ​network topology
C) ​network path
D) ​network interface

Question 30

​A ____ is a central connection point for nodes in a LAN.

A) ​hub
B) ​switch
C) ​router
D) ​bridge

Question 31

​____ is a connectionless protocol that provides less reliable transport services.

A) ​Transmission Control Protocol
B) ​User Datagram Protocol
C) ​Systems Network Architecture
D) ​Internetwork Packet Exchange

Question 32

​A ____ topology directly connects every node to a shared hub, switch, or router.

A) ​star
B) ​bus
C) ​ring
D) ​mesh

Question 33

The ____ layer forwards messages to their correct destinations.

A) ​Session
B) ​Data Link
C) ​Network
D) ​Data Link

Question 34

​The term ____ describes transmission situations involving multiple senders and receivers.

A) ​unicasting
B) ​broadcasting
C) ​multicasting
D) ​netcasting

Question 35

Most large-scale delivery services use a ____ system to connect source and destination nodes.

A) ​send and relay
B) ​store and forward
C) ​store and forget
D) ​send and forget

Question 36

____ is the glue that binds private networks together to form the Internet and the World Wide Web.

A) ​IPX
B) SNA
C) ​TCP/IP
D) ​AppleTalk

Question 37

​The ____ layer ensures that data transmitted by one network node is interpreted correctly by the other network node.

A) ​Presentation
B) ​Application
C) ​Network
D) ​Data Link

Question 38

A wireless ____ connects a wireless network to a wired network.

A) ​bridge
B) ​access point
C) ​router
D) hub

Question 39

​If multiple nodes attempt to transmit across the same medium at the same time, their messages mix, producing noise or interference that's called a ____.

A) ​carrier
B) ​synchronization
C) ​reflection
D) ​collision

Question 40

​Each network covering a floor or building is called a ____.

A) ​wide area network
B) ​metropolitan area network
C) ​local area network
D) ​zone network

Question 41

​The ____ model was originally intended to unite disparate network standards in a way that enabled any node connected to any type of network to communicate with any other node.

A) ​IPX/SPX
B) ​SNA
C) ​NetBIOS
D) ​TCP/IP

Question 42

In ____, the VoIP user perceives periods of silence before the other participant's speech is heard.

A) ​jitter
B) fragmentation
C) ​latency
D) tatter

Question 43

____ is a family of technologies and standards for carrying voice messages and data over a single packet-switched network.

A) ​Multicasting
B) ​Voice over Data
C) ​Hybrid Audio/Video
D) ​Voice over IP

Question 44

​____ make forwarding decisions by using layer 2 addresses.

A) ​Switches
B) ​Routers
C) ​Hubs
D) ​Bridges

Question 45

​In CSMA/CA, a node that wants to transmit sends a(n) ____________________ signal.

Question 46

​A(n) ____________________ topology directly connects every node to a single shared transmission line.

Question 47

​Nodes sharing a common transmission medium follow a(n) ____________________ protocol to determine how to share the medium efficiently.

Question 48

​Like a hub, a(n) ____________________ generally has a dozen or more input connections for computers and other network nodes.

Question 49

At the sending node, the ____ layer's role is to translate IP datagrams into a format that can be transported and forwarded over a specific physical network.

A) Application
B) ​Network Interface
C) ​Session
D) Transport

Question 50

​The ____________________ layer establishes and manages communication sessions.

Question 51

​VoIP equipment and software can be loosely divided into two groups: end nodes and ____.

A) ​switch nodes
B) ​intermediate nodes
C) ​station nodes
D) ​routing nodes

Question 52

The VoIP user perceives ____ as periods of silence mixed with overlapped voice signals.

A) ​jitter
B) latency
C) fragmentation
D) overrun

Question 53

The procedure for forwarding a message between two end nodes in the same LAN depends on the ____________________ network topology.

Question 54

​____ make forwarding decisions by using layer 3 addresses.

A) ​Bridges
B) ​Hubs
C) ​Switches
D) ​Routers

Question 55

A(n) ____________________ topology is one in which every node pair is connected by a point-to-point link.

Question 56

​____________________ is the physical placement of cables and device connections to these cables.

Question 57

A(n) ____________________ topology directly connects every node to two other nodes with a set of links forming a loop or ring.

Question 58

​____ is based on the 802.3z standard and the 802.3ab standard.

A) ​Wireless Ethernet
B) ​Standard Ethernet
C) ​Gigabit Ethernet
D) ​Megabit Ethernet

Question 59

The oldest and most widely used VoIP protocol suite is ____.

A) ​H.323
B) ​H.264
C) SIP
D) ​Q.931

Question 60

​Each central node maintains a table of node addresses and transmission lines or connection ports, called a(n) ____________________ table, and uses this table to make forwarding decisions.

Question 61

​The ____________________ layer is where communication between devices actually takes place.

Question 62

A(n) ____________________ is a TCP connection with a unique integer number.

Question 63

​List and describe four physical topologies.

Question 64

​Describe the network interface layer in the TCP/IP model.

Question 65

​The written format of 32-bit IP addresses is called ____________________ notation.

Question 66

​Describe the application layer of the TCP/IP model.

Question 67

​____________________ are nodes connecting two or more networks or network segments that might be implemented physically as workstations, servers, or routers.

Question 68

​What are the call management functions that VoIP must perform.

Question 69

The ____________________ layer formats messages into packets suitable for transmission over the network.

Question 70

​____________________ is a group of wireless networking standards developed by the WiMAX Forum and codified in the IEEE 802.16 standard.

Question 71

​TCP connections are established through a(n) ____________________, which is the combination of an IP address and a port number.

Question 72

​IP is an example of a(n) ____________________ protocol, in which the sender doesn't attempt to verify a recipient's existence or ask its permission before sending data.

Question 73

​What was ARPANET?

Question 74

​____________________ embeds all or part of a datagram in a physical network's message format.

Question 75

​The IEEE has drafted a number of network standards, collectively referred to as the IEEE ____________________ standards.