Online Quizzes

Building Cisco Remote Access Networks (BCRAN)

1. SLIP was originally developed for IP for only point to point serial line connections. It was later replaced by ___________, which allowed more than one protocol to be transmitted.

	HDLC
	PPP
	Ethernet
	PAP

2. Which of the following routers are considered to be telecommuter office equipment? (choose all that apply)

	Cisco 800 series router
	Cisco 1600 series router
	Cisco 3600 series router
	Cisco 2600 series router
	Cisco AS5x00 series router
	Cisco 700 series router

3. The _________ PPP compression technique is the only compression method supported by the Cisco 700 Series router.

	TCP header compression
	stacker
	predictor
	Microsoft Point-to-Point Compression

4. The _________ PPP compression technique works with Multilink PPP and virtual private dial-up networks, which allows for greater efficiency.

	stacker
	TCP header compression
	predictor
	Microsoft Point-to-Point Compression

5. Which of the following choices use virtual circuits and provide end-to-end connectivity?

	a packet-switched connection
	a circuit-switched connection
	an ISDN connection
	a dedicated connection

6. Which of the following products should be considered when your central site needs to accomodate ISDN connectivity for your branch offices, dial in connectivity for mobile users, as well as the ability to dial out from within your campus?

	7200
	AS5x00
	1600
	4000
	3600

7. What does "PCM" stand for?

	Primary Cycle Modulation
	Proprietary Code Modulation
	Pulse Cycle Modulation
	Pulse Code Modulation

8. In a frame relay PVC environment, which methods can you use to map a network layer address, such as an IP, to a virtual connection identified by a DLCI? (choose two)

	statically, using the frame-relay config DLCI command.
	dynamically, using inverse ARP.
	statically, using the frame-relay config command.
	statically, using the frame-relay map command.
	dynamically, using ARP.

9. What configuration command is used to specify which users are able to access the Exec prompt?

	aaa authentication enable exec tacacs+ local
	aaa authorizataion network
	aaa authentication login
	aaa authentication enable

10. What IOS command is used to define interesting traffic for DDR?

	Dialer-list
	Dialer-group
	Dialer-profile
	Dialer-map

11. Your company recently opened a branch office away from corporate headquarters in another part of town. The network at the new branch supports several users that require regular access through the day to data and applications residing on the corporate network. Which connections are most likely to meet the connectivity requirements? (choose two)

	asynchronous serial
	ISDN serial
	dedicated serial
	frame relay

12. What is the purpose of the "broadcast" parameter in the following interface configuration command (choose all that apply)

x.25 map IP 192.168.1.50 4578953147 broadcast

	to configure the router to use ARP for the specified IP address
	to configure the router to respond to ARP requests for the specified IP address
	to forward DHCP and DNS lookups
	to send routing updates

13. In the context of Cisco IOS 12.0, whe you specify the ISDN switch-type, it is important to remember that all interfaces must connect to the same type of switch.

True

False

14. Which ISDN reference point enables a standard phone line to be connected to an ISDN router?

	S
	U
	R
	T

15. Your company has only one registered Internet IP address. How does NAT help you provide Internet connectivity to all of your company's computers?

	NAT implements bridging technology to avoid the routing problems involved with invalid IP addresses.
	NAT allows protocols other than TCP/IP to access the Internet.
	NAT allows only stations with valid addresses to be transmitted to the Internet.
	NAT allows the pool of valid addresses to be shared by multiple hosts.

16. Which statement best describes reverse telnet?

	It is encrypted telnet.
	It is the process of identifying a user who telnets into your system.
	It is a method to connect to an attached modem.
	It is the protocol used during a telnet session.

17. Which router platforms might you place in a telecommuter's home office? (choose all that apply)

	Cisco 800
	Cisco 700
	Cisco 4000
	Cisco 1600
	Cisco 1000
	Cisco AS5x00

18. What could be a security issue when using PAP as an authentication method?

	PAP doesn't allow for random passwords
	PAP doesn't transmit the password over the line
	PAP transmits passwords in clear text
	PAP automatically accepts any clear password

19. A network administrator in Brussels must order a Cisco router to set up an ISDN connection. Which type of ISDN interface meets the requirement?

	U interface
	S/U interface
	R interface
	S/T interface

20. Which command will enable X.25 switching on an interface?

	encapsulation x25 dte
	encapsulation dce
	encapsulation x25
	encapsulation x25-switch

21. Cisco routers support which of the following WAN serial standards? (choose all that apply)

	EIA/TIA-232
	IEEE802.10
	X.21
	EIA/TIA-449
	V.35

22. You are examining various access methods for your telecommuters. Your company is looking at cost as the biggest issue. Which do you select?

	Leased Line
	Asynchronous Dial-Up
	Frame Relay
	ISDN BRI
	X.25

23. Which connector type is typically used to connect a Cisco 700 series router to an ISDN connection?

	RJ-45
	DB-15
	DB-9
	RJ-11
	Centronix

24. When is encapsulation frame relay configured on a router interface?

	when ppp chap is enabled
	when DDR is enabled
	when connecting to a non-Cisco router
	when setting up dynamic mapping
	when establishing a frame-relay connection

25. Which of the following would be used to create a single logical connection using multiple physical interfaces?

	STAC
	MPPC
	ppp channel
	ppp multilink
	CHAP

26. When deciding between dedicated or switched connections, which of the following corporate data characteristics would make you decide that a dedicated connection is more cost-effective? (choose two)

	bursty LAN traffic patterns
	customer supplied equipment
	longer connect times
	shorter distances

27. From the list, select the tasks that would be accomplished by issuing the following command on a Cisco router:

Router# telnet 10.1.1.1 2007
Trying 10.1.1.1, 2007 ... Open

	an Xremote connection is being started on the router
	data will be associated with line 7
	a connection to rotary group 7 is being started on the router
	a reverse telnet connection is being started on the router

28. What is the default dial-up protocol for Windows 98?

	PPP
	NRM
	CSLIP
	SLIP

29. Compression reduces network bandwidth requirements at what expense? (choose all that apply)

	Increased router memory usage.
	Increased router NVRAM usage.
	Increased network routing loads.
	Increased serial interface usage.
	Increased router CPU usage.

30. What best describes the purpose of a UART chip?

	It converts between asynchronous and serial communication.
	It converts between asynchronous and digital communication.
	It converts between parallel and serial communication.
	It converts between asynchronous and synchronous communication.

31. Which channel of an ISDN connection carries the voice or data?

	B
	All channels
	D
	C

32. What is the primary element of a dialer profile?

	Dialer interface
	Dialer pool
	Dialer map class
	Physical interface

33. What queueing strategy uses discriminators to identify conversations for equal access to the WAN?

	FIFO
	WFQ
	priority
	custom

34. Which of the following Frame-Relay commands will assign a DLCI of 100 to a subinterface?

	Router(config-subif)#frame-relay dlci 100
	DLCI values are dynamically learned and are not manually configurable
	Router(config-subif)#frame-relay interface-dlci 100
	Router(config-if)#frame-relay interface serial 0.1 dlci 100

35. What command would you use to specify additional commands required to log onto a remote system using a modem via an asynchronous interface?

	script
	dialer script
	chat script
	dialer map

36. Which of the following are benefits that are provided by PPP callback? (choose two)

	packet bundling
	toll cost control
	compression
	load balancing
	access control

37. A user taps into a line and connects to someone else's session. What is one possible cause?

	CD is not dropped or recognized.
	The access server dropped DTR early.
	The new user has a higher session priority.
	DTR is not dropped or recognized.

38. Which type of communication is typically used when dealing with dedicated circuits?

	synchronous connection
	asynchronous connection
	binary information transmission
	ISDN

39. Which option is used for the Modulo command if the maximum packet size for incoming and outgoing packets is 127?

	127
	128
	129
	1
	8

40. If your WAN connection from a 760 series router attaches to an external NT1, which of the following interfaces should you use?

	DB-60
	RS-232
	BRI-U
	BRI-S/T

41. Which of the following terms describes Committed Burst as it relates to frame relay congestion control?

	The maximum number of bits that a frame relay switch will attempt to transfer in excess of the Committed Information Rate(CIR).
	The clock speed of the telco connection to the frame relay cloud. This is the rate that data will flow in and out of the network connection.
	The maximum number of bits that a switch agrees to transfer during a given sampling preiod.
	The rate in bits per second that a frame relay switch is configured to transfer data at a constant rate through the frame relay cloud.

42. The LAPD protocl exists on which ISDN channel?

	TE1
	NT2
	B
	D
	A

43. Which type of WAN connection provides the most widely available access from any remote site?

	Synchronous serial connection
	T1 or fractional T1 connection
	Asynchronous serial connection
	ISDN BRI

44. When should you utilize queueing on your routers?

	whenever you use routed protocols
	if the link ever experiences periods of high congestion
	only when the WAN has low utilization
	always

45. Which of the following statements would be considered true about the following interface configuration command:

backup load 75 25

	If the primary link is overloaded for 75 seconds, it will enable the secondary link for 25 seconds.
	Once there are 75 errors on the primary link, the secondary link will be enabled for 25 seconds.
	If the primary link load is greater than 75 percent, the secondar link will be enabled until the primary link load is less than 25 percent.
	If the primary link load is less than 75 percent, the secondary link will be enabled until the primary link load is greater than 25 percent.

46. In which two of the following situations would implementing a queueing policy other than first-in-first-out(FIFO) be beneficial?

	A fractional T3 suffers from congestion during normal business hours. Time sensitive applications and server connections time out during the most congester periods.
	WAN traffic across a T3 link suffers only occassional congestion at which time certain interactive applications experience poor performance.
	A T3 WAN connection experiences utilization from 20% to 50% with no noticeable congestion. The link supports several traffic types including file transfers and interactive applications.
	It has become evident that large graphics file transfers between the scale office and the corporate printing facility are adversely affecting interactive applicaations whose traffice shares the same T1 link.

47. What components require a terminal adaptor when connecting to an ISDN network? (choose all that apply)

True

False

48. What features are provided by frame-relay traffic-shaping? (choose all that apply)

	Overcoming split horizon issues in NBMA environments
	BECN support on a per-virtual circuit basis.
	Rate enforcement on a per-virtual circuit basis
	Queueing support at the virtual circuit level.

49. Which of the following best defines the term "access rate" in a frame relay environment?

	The maximum number of bits that a switch agrees to transfer during a given sampling period.
	The rate in bits per second that a frame relay switch is configured to transfer data at a constant rate through the frame relay cloud.
	The maximum number of bits that a frame relay switch will attempt to transfer in excess of the Committed Information Rate(CIR).
	The clock speed of the telco connection to the frame relay cloud. This is the rate that data will flow in and out of the network connection.

50. When connecting multiple branch offices to a central office, which statement about X.25 flow control parameters is correct?

	The central office parameter should roughly equal the combined branched parameters.
	The central office should be set to dynamic to accomodate any service parameters that the branches may require.
	A remote office should be configured the same as the central office.
	Each site configures their flow control parameters according to the support offered by the local X.25 switch.

51. Where in Windows 95 do you configure a new Dialup Networking connection?

	Control Panel - Networking
	My Computer - Dialup Networking
	Control Panel - Modems
	Start - Settings

52. In what ways could you implement the chat-script command on an asynchronous line? (choose all that apply)

	ppp callback
	chap authentication
	modem dialing
	line resets
	configuring the modem
	logging into a remote site

53. Which of the following ISDN components is typically described as a device that is compatible with the ISDN network and connects to an NT1 or NT2 device?

	TE2
	R
	TE1
	TA
	U
	S/T

54. Up to four network module slots are available for LAN and WAN requirements on the 3600 series multiservice access servers/routers. Which one of the following statements further highlights the capabilities of the 3600 series multiservice access servers/routers?

	The Cisco 3600 series access routers are high-performance, modular, central-site routers that support a broad range of LAN and WAN technologies.
	The Cisco 3600 series is designed for remote-office networking where there is a need for Cisco IOS software, high performance, and WAN options other than ISDN.
	The 3600 series multiservice access servers/routers provide a modular solution for dial-up and permanent connections over asynchronous, synchronous, and ISDN lines.
	The Cisco 3600 introduces industry-leading serviceability and manageability features.
	Cisco 3600 routers are usually fixed configuration with a minimum of two of the following interfaces: Ethernet, Token Ring, synchronous serial, asynchronous serial, ISDN BRI and hub.
	The Cisco 3600 series has single or dual fixed-LAN interfaces. These routers provide a network module slot and two WAN interface card slots for WAN connections.
	The Cisco 3600 universal access server is a versatile data communications platform that provides the functions of an access server, a router, modems, and terminal adapters (TAs) in a modular chassis.
	The Cisco 3600 access router provides maximum security, integration, and versatility in a desktop box format.

55. Which of the following statements best describe Asynchronous WAN connections?

	These connections require RJ-11 cables that are attached from the modem's line port to the telephone company jack.
	These modules are available with balanced and unbalanced interfaces. The balanced modules provide a 120-ohm interface for network connections. The unbalanced modules provide a 55-Ohm interface for network connections.
	These connection interfaces require RJ-45 cables to connect to the ISDN network.
	These modules are available with or without a built-in CSU.
	The following signaling standards are supported: EIA/TIA-449, V.35, X.21, and EIA-530.

56. The Cisco 1000 series router is another member of the WAN capable Cisco router products. Which statement best describes this multifunctional router?

	The Cisco 1000 series Internet Network Devices for Integrated Services Digital Network (ISDN) routers, which is designed for telecommuters, offers affordable, easy-to-manage, multiprotocol fast Internet access for multiple users in small and home-based of
	The Cisco 1000 access router provides maximum security, integration, and versatility in a desktop box format.
	The Cisco 1000 series has single or dual fixed-LAN interfaces. These routers provide a network module slot and two WAN interface card slots for WAN connections.
	The Cisco 1000 introduces industry-leading serviceability and manageability features.
	The Cisco 1000 series router is the least expensive of Cisco's IOS routers. It provides enhanced security, low cost of ownership, proven reliability and safe investment through the power of Cisco IOS software tailored for small offices and telecommuters.
	The Cisco 1000 series is designed for remote-office networking where there is a need for Cisco IOS software, high performance, and WAN options other than ISDN.
	The Cisco 1000 series access routers are high-performance, modular, central-site routers that support a broad range of LAN and WAN technologies.
	The 1000 series multiservice access servers/routers provide a modular solution for dial-up and permanent connections over asynchronous, synchronous, and ISDN lines.

57. Choose the statement from the following list that best describes ISDN BRI.

	These connections require RJ-11 cables that are attached from the modem's line port to the telephone company jack.
	These modules are available with balanced and unbalanced interfaces. The balanced modules provide a 120-ohm interface for network connections. The unbalanced modules provide a 55-Ohm interface for network connections.
	These connection interfaces require RJ-45 cables to connect to the ISDN network.
	These modules are available with or without a built-in CSU.
	The following signaling standards are supported: EIA/TIA-449, V.35, X.21, and EIA-530.

58. Choose one statement from below which best describes the cable connection needs of ISDN PRI in Europe.

	These connections require RJ-11 cables that are attached from the modem's line port to the telephone company jack.
	These modules are available with balanced and unbalanced interfaces. The balanced modules provide a 120-ohm interface for network connections. The unbalanced modules provide a 55-Ohm interface for network connections.
	These connection interfaces require RJ-45 cables to connect to the ISDN network.
	These modules are available with or without a built-in CSU.
	The following signaling standards are supported: EIA/TIA-449, V.35, X.21, and EIA-530.

59. The Cisco 1720 access router features two modular WAN slots that support 1600, 2600, and 3600 data WAN interface cards. Which one of the following statements elaborates on the specifications of the Cisco 1720 series access router?

	The Cisco 1720 series is designed for remote-office networking where there is a need for Cisco IOS software, high performance, and WAN options other than ISDN.
	Cisco 1720 routers are usually fixed configuration with a minimum of two of the following interfaces: Ethernet, Token Ring, synchronous serial, asynchronous serial, ISDN BRI and hub.
	The Cisco 1720 series Internet Network Devices for Integrated Services Digital Network (ISDN) routers, which is designed for telecommuters, offers affordable, easy-to-manage, multiprotocol fast Internet access for multiple users in small and home-based of
	The Cisco 1720 access router provides maximum security, integration, and versatility in a desktop box format.
	The Cisco 1720 series has single or dual fixed-LAN interfaces. These routers provide a network module slot and two WAN interface card slots for WAN connections.
	The Cisco 1720 series router is the least expensive of Cisco's IOS routers. It provides enhanced security, low cost of ownership, proven reliability and safe investment through the power of Cisco IOS software tailored for small offices and telecommuters.
	The Cisco 1720 universal access server is a versatile data communications platform that provides the functions of an access server, a router, modems, and terminal adapters (TAs) in a modular chassis.
	The 1720 series multiservice access servers/routers provide a modular solution for dial-up and permanent connections over asynchronous, synchronous, and ISDN lines.

60. PPP is a encapsulation protocol that works at the data-link layer of the OSI model. It is the protocol for the transport of network layer protocols over serial links. It was designed to work with IP. Which of the following is the proper command to enable PPP on your router?

	Router(config)#ppp
	Router(config)#encapsulation ppp
	Router(config)#ppp encapsulation
	Router(config-if)#ppp
	Router(config-if)#encapsulation ppp
	Router(config-if)#ppp encapsulation

61. If compressed data such as graphics and video are frequently transferred, the implementation of compression throughout the network would be very beneficial. Which of the following would be the average rate for mixed compressed and uncompressed source data?

	1.4:1
	3:2
	1.6:1
	1.8:1

62. To configure the hold-queue timer on the dialing interface, you must use the dialer hold-queue timeout command. The hold timer on the callback client should be approximately how many times larger than the server's hold-queue timer?

	5
	4
	3
	2
	They should be equal.

63. Which command is used to configure a line to discover what type of modem is connected to the router, and to configure that modem automatically?

	show line
	debug modemcap
	modem autoconfigure discovery
	modemcap entry
	modemcap edit
	modem discovery autoconfigure
	chat-script
	modemcap new entry

64. When manually configuring a modem there are several "AT" commands that can be used. Which of the following will load the modem's factory default settings?

	AT$
	ATS$
	AT&F
	ATS0=1

65. When configuring the central router to receive asynchronous calls from the remote site, you need to configure a pool of IP addresses that the router will lease to clients. Which of the following commands would create a pool of IP addresses from 10.115.0.100 to 10.115.0.140 referred to as pool1?

	Router(config-if)#local pool pool1 10.115.0.100 10 115.0.140
	Router(config-if)#ip local pool pool1 10.115.0.100 10 115.0.140
	Router(config)#local pool pool1 10.115.0.100 10 115.0.140
	Router(config)#ip local pool pool1 10.115.0.100 10 115.0.140

66. On the 700 series router, which one of the following commands is used to see the IP address returned by DHCP?

	set ip rip update command
	set ppp multilink command
	set profile user command
	show commands, defined
	show dhcp configuration
	show dhcp connections
	show ip configuration
	show ip nat translations

67. Which of the following isdn commands will configure the D channel to switch incoming analog calls to the internal modems? (Choose 2)

	Router(config)#interface serial 1/0:23
	Router(config-if)#interface serial 1/0/23
	Router(config-if)#isdn incoming-voice modem
	Router(config)#isdn incoming-voice modem

68. The emergence of ISDN represents an effort to standardize subscriber services, user/network interfaces, and network and internetwork capabilities. ISDN applications include high-speed image applications, additional telephone lines in homes to serve the telecommuting industry, high-speed file transfer, and video conferencing. Voice service is also an application for ISDN. Which of the following are the two main interface types of ISDN?

	ISDN BRI
	ISDN MRI
	ISDN NRI
	ISDN CRI
	ISDN PRI
	ISDN QRI

69. Which of the following commands (properly configured) could display information about the PRI channels, Layer 2 and 3 timers, and memory?

	show isdn status
	isdn switch-type basic 5f
	show controllers isdn answers
	debug isdn q921
	debug isdn q931
	show controller t1 1/0
	show bri 0
	show interface serial 1/0:23

70. ISDN BRI and PRI can be classified into different signal level hierarchies. Which of the following digital signal levels is equivalent to North American PRI?

	DS0
	DS1
	DS2
	DS3
	DS4

71. Which of the following commands would be a valid example for multilink activation? (Choose all that apply)

	Router(config)#int bri 0
	Router(config-if)#int bri 0
	Router(config-if)#dialer load-threshold load [inbound \| outbound \| either]
	Router(config-if)#ppp multilink

72. Which of the following commands would you use to set up the LAN protocols-to-remote host mapping?

	encapsulation address x121
	encapsulation x25
	show llc2
	x25 map
	x25 vc map ip
	x25 route ip
	show x25 route
	show interfaces serial

73. Due to network congestion bottlenecks, packets are dropped at the bottlenecks. When this happens unacknowledged packets may get resent, resulting in additional traffic and congestion. What can you use to help to ensure that certain packet types are not dropped by allowing a portion of bandwidth for those packet types?

	FIFO queueing
	Priority queueing
	Custom queueing
	Rate enforcement
	Weighted fair queueing

74.

interface serial 0

backup interface serial 1 

backup load 25 5 

backup delay 10 60

Which two statements are true based upon the above configuration?

	The secondary line is deactivated when the aggregate load returns to 5 percent of the primary bandwidth.
	The secondary line remains active for 10 seconds after the primary returns and becomes active again.
	The secondary line activates once the traffic threshold on the primary line exceeds 25 percent.
	The secondary line waits 60 seconds after the primary goes down before activating.
	The secondary line is activated when the traffic on the primary line exceeds 25 connections.

75. Which of the following interfaces has weighted fair queuing disabled by default?

	serial interfaces at E1 speeds or below
	serial interfaces that use compressed PPP
	serial lines operating at E3 or T3
	serial interfaces that use X.25

76. Which of the following commands is used to determine if a user can access the privileged command level with TACACS+?

	aaa default accounting
	aaa authentication enable default
	aaa ppp authorization
	aaa ppp authentication
	aaa new-model
	tacacs-server key
	radius-server host
	login authentication

77. Analyze the following configuration example, and determine which of the options are true of this configuration. (Choose all that apply)

Router(config)#aaa authentication login default tacacs+ local 

Router(config)#aaa authentication login Cisco tacacs+ local 

Router(config)#line console 0 

Router(config-line)#login authentication Cisco 

Router(config-line)#line 1 37 

Router(config-line)#login authentication Cisco 

Router(config-line)#line vty 0 4 

Router(config-line)#

	Console login requires TACACS+ for authentication
	The default login is TACACS+ server
	On lines 1 through 37, the AAA list name assigned is Cisco
	Cisco is the default login password

78. Every computer must have an IP address in order to attach to a public network such as the Internet. The number of available IP addresses is dwindling as the number of computers attaching to public networks rapidly increases. To maximize the use of a registered IP address, Cisco uses Network Address Translation (NAT). Which of the following RFCs (Requests for Comments) are directly related to Cisco's implementation of NAT?

	RFC 1631
	RFC 1771
	RFC 1918
	RFC 1008

79. You want to configure static NAT translation on a router so that it enables the translation of an inside source address to a global inside address. Which of the following commands would you use to define the inside source address that needs translating?

	ip nat
	ip nat outside source
	ip nat pool
	ip nat inside destination
	ip pool nat translation
	ip nat inside translation
	ip nat inside source
	ip inside nat destination