The Celtic Rover - Collision Domain - CCNA 640-821 Test Database Console.

2)	As the network administrator of at Foster's Lager you are tasked to upgrade your Cisco router's IOS from a TFTP server on the network. During the process the upgrade procedure is stopped and you find that an image file in Flash will have to be deleted. What is the most likely reason for this message?
		There is insufficient room for one than one image.
		The router has detected a copy of the current software image on the TFTP server.
		The file is relocatable and not compressed.
		The image to load is a binary executable file.

3)	A network is very congested. Currently all devices are connected through a hub. Which of the following would best decrease congestion on the network?
		Addition of a second hub.
		Replace the hub with a router.
		Replace the hub with a switch.
		Replace the hub with a repeater.
		Add a bridge

4)	Choose two features that apply to a connection-oriented protocol?
		"Best-effort" datagram delivery.
		Encapsulation of packets in a data frame with source and destination MAC addresses.
		Establishing, maintaining, and terminating virtual circuits.
		Best path determination.
		Data transport reliability.

5)	Which of the following routing protocols are designed to advertise detailed routing information about each _______, typically inside a single company or organization.
		Interior
		Exterior
		Enhanced
		hops
		subnet
		route

6)	A Layer 3 packet rests inside the data portion of an Ethernet frame, 1500 bytes is the largest IP packet allowed over this. This concept is commonly referred to as the ...?
		Ethernet
		Token Ring
		Minimum Transmission Unit
		Maximum Transmission Unit.

7)	Which of the following commands would restore your router to the factory defaults?
		reload
		erase running-config
		erase flash
		erase startup-config
		delete configuration

8)	Multiplexing as it pertains to TCP .....
		involves a continuous stream of ordered data
		allows receiving hosts to decide the correct application for which the data is destined based on the port number.
		provides acknowledgment of data using the Sequence and Acknowledgment fields in the TCP header.
		is used to protect buffer space and routing devices.
		is used to initialize port numbers and other TCP header fields.

9)	Select the three Upper Layers of the OSI model?
		Data-link
		Network
		Transport
		Session
		Presentation
		Application

10)	Cisco supports three types of switching modes on switches. Which mode of switching can have variable latency through the switch?
		Store-and-forward
		Cut-through
		Fragment-free

11)	Within Telnet - the "show sessions" command lists current and suspended sessions. Which of the following commands does the same thing?
		show interface brief
		show interface serial 0
		where
		show users
		show route

12)	Identify five appropriate TCP application protocols with their well-known port number?
		FTP data - 20
		Telnet - 23
		SMTP - 25
		HTTP - 80
		POP3 - 110
		FTP control - 22

13)	What is the result of two nodes on a network transmitting simultaneously called?
		Backoff
		Retransmission
		Collision
		Propagation.
		Broadcast

14)	Where would a router boot from if the configuration register settings were changed to 0x0101?
		The router would not boot.
		The router would boot from Flash memory.
		The router would boot from ROM.
		The router would boot from RAM.
		The router would boot from Flash memory and then reboot from ROM.

15)	A PING command tests IP connectivity on which three layers of the OSI Model?
		Physical
		Data-Link
		Network
		Transport
		Session
		Presentation

16)	Which five of the following would be considered Wide Area Network multiplexing types?
		TDM - Time-Division Multiplexing
		FDM - Frequency-Division Multiplexing
		STM - Statisical-Division Multiplexing
		ADM - Asynchronous-Division Multiplexing
		WDM - Wave-Division Multiplexing
		DWDM - Dense Wave-Division Multiplexing

17)	Which three of the following are Application layer protocols that use TCP?
		ARP
		HTTP
		SMTP
		FTP
		ICMP

18)	UTP Category 5 is ...
		more expensive than CAT5 but better for Gigabit Ethernet.
		very popular for cabling to the desktop.
		intended for fast Token Ring speed option.
		used for telephones as well as data. Popular option for Ethernet in years pass.

19)	The process of web servers adding an HTTP header to a webpage, followed by a TCP header, an IP header, and finally the data link header and trailer is an example of:
		The OSI model
		Same-layer interaction
		Data encapsulation
		All of the above

20)

Which four of the following physical layer connectivity interfaces could be used between both the DTE and DCE devices?

V.35

FDDI

LAPB

HSSI

X.21

EIA/TIA 232

21)	Which of the following devices/interfaces typically connects to a four-wire line provided by a telco?
		Router serial interface
		CSU/DSU
		Transceiver
		Switch serial interface

22)	Select two TCP/IP transport layer (host-to-host) protocols.
		UDP
		HTTP
		SMTP
		TCP
		PPP
		IP

23)

Please review the Exhibit. How many broadcast domains and collision domains make up the following network topology?

2 Broadcast Domains, 9 Collision Domains

9 Broadcast Domains, 2 Collision Domains

7 Broadcast Domains, 3 Collision Domains

3 Broadcast Domains, 7 Collision Domains

4 Broadcast Domains, 11 Collision Domains

11 Broadcast Domains, 4 Collision Domains

24)	Which three of the following statements are true regarding Spanning Tree forwarding state?
		All ports on the root bridge are placed in forwarding state.
		One port on each bridge is considered its root port which is placed in forwarding state.
		On each LAN segment, one bridge is considered to be the designated bridge on that LAN; that designated bridge's interface on the LAN is placed in forwarding state.
		One port on the root bridge is placed in forwarding state.
		All ports on each bridge are considered to be root ports and are placed in forwarding state.

25)	What command copies the configuration from RAM into NVRAM?
		copy running-config tftp
		copy tftp running-config
		copy running-config start-up config
		copy start-up-config running-config
		copy startup-config running-config
		copy running-config startup-config

26)	Which of the following protocols permit a client PC to request assignment of an IP address as well as learn its default gateway?
		ARP
		DNS
		DHCP
		RARP

27)	Select three protocols are TCP/IP Model's Network Interface Layer.
		Ethernet
		POP3
		PPP
		Frame Relay
		UDP
		ARP

28)	Which of the following is the default hold-down timer interval for IGRP?
		60 seconds
		120 seconds
		180 seconds
		280 seconds
		340 seconds
		400 seconds

29)	Which of the following devices stops the flow of broadcasts.
		Routers
		Bridges
		Switches
		Transceivers
		Modems

30)	Ports not assigned to a specific Virtual Local Area Network on a Catalyst 1900 series switch default to which Virtual Local Area Network?
		Round robin split between all Virtual Local Area Networks defined on the switch
		VLAN 1
		None - port is disabled
		VLAN 2

31)	Which of the following does Ethernet use for arbitration?
		The CSMA/CD algorithm.
		Encapsulaton
		Addressing
		MAC (Media Access Control)
		LLC

32)	Select two functions of the OSI model's Data-link layer?
		Manages protocol access to the physical network medium.
		Allows for fast switch routing
		Handles access to shared media
		Provides SAPs for higher level protocols
		Allows multiple devices to uniquely identify one another on the Data-link layer.

33)	Which CLI keyboard key will complete a valid command if you partially enter that command?
		Right arrow
		Up arrow
		Left Arrow
		Down arrow
		TAB
		Enter

34)	You save changes to your router configuration by entering the"copy running-config startup-config" command. On the router's reboot, the configuration was not loaded into RAM. Which of the following would apply?
		You failed to save the config with the correct input command.
		The startup-config stored in Flash is corrupt.
		The configuration register is set to bypass the "startup-config".
		NVRAM is corrupt and cannot be read.

35)	Why would you enter o/r 2142 during a password recovery procedure on a 2500 series router?
		To restart the router
		To bypass the configuration in NVRAM
		To view the lost password
		To save the changes to the configuration
		To enter ROM monitor mode

36)	Which of the following connections can be used to Telnet from a user�s Desktop PC directly to a router?
		Connect the Com port of the Desktop PC to the console port of the router using a crossover cable.
		Connect the Com port of the Desktop PC to the Ethernet port of the router using a straight-through cable.
		Connect the Ethernet port of the Desktop PC to the Ethernet port of the router using a straight-through cable.
		Connect the Ethernet port of the Desktop PC to the Ethernet port of the router using a rollover cable.
		Connect the Ethernet port of the Desktop PC to the Ethernet port of the router using a crossover cable.
		Connect the Com port of the Desktop PC to the console port of the router using a straight-through cable.

37)	Which layer of the OSI model is responsible for multiplexing and reliable / unreliable delivery of of data.
		Application
		Presentation
		Physical
		Data-link
		Session
		Transport

38)	Which of the following first octet ranges would qualify as a Class B network?
		0 - 126
		127 - 192
		1 - 126
		128 - 191
		128 - 192
		192 - 223

39)	A network is configured with three switches, each with an Ethernet segment connecting it to the other two switches. Each switch has some PCs attached to it as well. Which two of the following frames would cause loops if the Spanning Tree Protocol were not running?
		Unicasts sent to the MAC address of a device that has never been turned on
		Unicasts sent to the MAC address of a device that has never been turned on and working
		Frames sent to the Ethernet broadcast address
		None of the above

40)	IP and TCP headers are how many bytes each.
		10
		15
		20
		25
		30
		40

41)	Transmission Control Protocol and User Datagram Protocol reside on which layer of the TCP/IP model.
		Applicaton
		Transport
		Internetwork
		Network Interface

42)	On most Cisco routers, the default Configuration Register setting is hexadecimal number?
		2100
		2101
		2102
		2142

43)	Which four of the following IP interior routing protocols support VLSM?
		RIP-V1
		RIP-V2
		EIGRP
		O SP F
		Integrated IS-IS
		B G P

44)	Your boss asks you to identify the following Local Area Network frame header format: Preamble \| SD \| Destination Address \| Source Address \| Length\| DSAP \| SSAP \| Control \| Data \| FCS Which option would you use as your response?
		Ethernet (DIX)
		IEEE Ethernet (802.3)
		IEEE 802.3 with SNAP header
		Ethernet (DXI)

45)	Hubs and repeaters function on the Physical Layer of the OSI model. Which of the following statements would be considered true of Hubs and Repeaters?
		They create a single user domain.
		They create multiple broadcast domains.
		They create a single broadcast domain.
		They create a single collision domain.
		Intelligent devices.
		Unintelligent devices.

46)	Which two of the following interface states could a switch interface settle into after STP has completed building a spanning tree?
		Listening
		Blocking
		Forwarding
		Learning

47)	HDLC and PPP are considered serial point-to-point data-link protocols. Select four of the following that would also meet the criteria?
		SDLC
		LAPB
		LAPD
		ARP
		Proxy ARP
		LAPF

48)	PING uses this ICMP message to another IP address and the computer responds with this message?
		echo quench
		echo request
		echo response
		echo reply

49)

Within the Exhibit - all ports on Switch A are in the Accounting Virtual Local Area Network and all ports on Switch B are in the Human Resources Virtual Local Area Network. How many broadcast domains and how many collision domains make up the topology?

7 collision domains

7 broadcast domains

3 broadcast domains

10 collision domains

10 broadcast domains

16 collision domains

50)	Which three of the following can be configured during setup mode on a Cisco router?
		The "message of the day" banner.
		IP addresses.
		Clock rate for a serial interface.
		The enable password.
		Routed protocols.

51)	The network administrator has just completed changes to a router. You are tasked to ensure that the changes are correct and that they have been saved to NVRAM. Within the Cisco IOS, which command displays the back-up configuration to see if the changes have been saved to NVRAM?
		show flash
		show version
		show tftp-config
		show backup-config
		show startup-config

52)	Which three of the following devices would be in the same broadcast domain as PC A below?
		PC B which is separated from PC A by an Ethernet hub
		PC C which is separated from PC A by a transparent bridge
		PC D which is separated from PC A by an Ethernet switch
		PC E which is separated from PC A by a router

53)	After several configuration changes are made to a router, the "copy run start" command is issued. Where is the startup config stored?
		Flash
		ROM
		NVRAM
		RAM
		The configuration register
		TFTP server

54)	Which three of the following are considered to be common ways of establishing Virtual Local Area Network membership?
		Port-driven membership
		MAC address membership
		Layer 3-based membership
		Collision domain membership
		Broadcast membership
		Source Quench membership

55)	Which two of the following IOS command sequences could be used to recall the previous command line?
		Down arrow
		Up arrow
		Control B
		Control A
		Escape B
		Control P

56)	JPEG, TIFF, GIF, PICT, MPEG and MIDI file formats reside on the following layer of the OSI model?
		Application
		Presentation
		Session
		Transport
		Network
		Data-link

57)	Telnet, HTTP, FTP, WWW web browsers, NFS, SMTP, SNMP reside on which layer of the OSI model?
		Application
		Presentation
		Session
		Transport
		Network
		Data-link

58)	In a full-duplex Ethernet switch ....
		Collisions are virtually eliminated.
		Two cable pairs and a switched connection between each node are used.
		Connections between nodes are considered point-to-point.
		Packets can be simultaneously transmitted and received.
		All of the above.

59)	Which switching method allows the switch to fully receive the entire frame before forwarding it?
		Cut-through
		Cell switching
		Frame switching
		Store-and-forward
		Fragment-free

60)

Refer to the exhibit. Which three of the following statements would be considered true of the configuration?

The "clock rate 56000" command would be applied to Router A

The "clock rate 56000" command would be applied to Router B

There is no CSU/DSU within the configuration - therefore the "clock rate" command does not apply.

The DCE Serial cable swaps transmit and receive.

The DTE serial cable swaps transmit and receive

This configuration is commonly known as a back-to-back serial connection.

61)	Which of the following is the default hold-down timer interval for RIP?
		30 seconds
		60 seconds
		90 seconds
		120 seconds
		150 seconds
		180 seconds

62)	Your boss asks you to identify the following Local Area Network frame header format: Preamble \| Destination Address \| Source Address \| Type \| Data \| FCS Which option would you use as your response?
		Ethernet (DIX)
		IEEE Ethernet (802.3)
		IEEE 802.3 with SNAP header
		Ethernet (DXI)

63)	The "configure terminal" command is used to move from this mode to this mode?
		User mode
		Privilege mode
		Configuration mode
		Setup mode

64)	On which layer of the OSI Model do you perform an FTP download to your desktop?
		Application
		Presentation
		Session
		Transport
		Network
		Data-link

65)	In RX Boot mode a router is using which IOS in ROM and can send and receive packets but cannot do this?
		full-featured
		limited-function
		receive
		route
		transmit

66)	Which of the following would be considered a "full mesh" topology?
		Two rings going through the same set of devices, allowing loops to be made upon failure which continues the operation of the ring.
		Each device has a direct connection to each other device.
		Each device does not have a direct connection to each other device.
		Each device is connected to a central point sometimes called a hub-and-spoke.

67)	What are three advantages of using the OSI layered network model?
		Allows multiple-vendor development through standardization of network components
		Creates a list of communication rules that all companies must implement to access the Internet.
		Allows various types of network hardware and software to communicate
		Prevents changes in one layer from affecting other layers so that development is not hampered.
		Allows companies to develop proprietary interfaces.

68)	Which one of the following network devices would break-up broadcast domains by default?
		Router
		Hub
		Switch
		Bridge
		Repeater

69)	Which two of the following are useful trouble-shooting tools and use ICMP?
		Ping
		Telnet
		Configure
		Trace route
		Show commands
		Standard access list

70)	Which layer of the OSI model is responsible for maintaining end-to-end bidirectional flows between endpoints?
		Application
		Session
		Physical
		Data-link
		Transport
		Presentation

71)	Select the correct CLI mode where you could issue a command to reboot the router?
		User mode
		Enable mode
		Global configuration mode
		Interface configuration mode

72)	Choose three methods of flow control?
		Windowing
		Buffering
		Congestion avoidance
		Retransmission
		Positive acknowledgement

73)	If the window-size is changed from 1000 to 2000 during the data transfer stage of a connection-oriented TCP session, what is the result?
		The sending host will tranmits 2000 bytes before waiting for an acknowledgement.
		The sending host will transmit 1000 packets before waiting for an acknowledgement.
		The sending host will transmist 3000 bytes before wating for an acknowledgement.
		The send host will tranmist 2000 segments before waiting for an acknowledgement.

74)	Internet Protocol uses the this layer to deliver the IP packet to the next router or host, with each router repeating this process until the packet arrives at its destination.
		Application
		Transport
		Internetwork
		Network Interface

75)	TCP, UDP, SPX reside on which layer of the OSI model.
		Transport
		Network
		Data-link
		Physical
		Presentation
		Application

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