CCNA 4 v.3.1 Voucher badly need answres

doublesided8 · Joined: 19 Dec 2006 Posts: 1

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1. How is RIP configured on a router?

RIP is configured globally and then assigned an IP address and subnet mask.
RIP is configured globally and then applied to each interface that will participate in the RIP routing process.
RIP is configured individually on each interface that will participate in the RIP routing process.
RIP is enabled globally and then networks are associated with the RIP routing process.

2

The network in the graphic is using EIGRP with the metrics shown. Router A has a route to network 210.67.130.0 through Router C, with a feasible distance of three. What will happen if the direct link between A and C becomes unavailable? (Choose two.)

DUAL will immediately promote the feasible successor route through Router B to successor route status.
The route to Network C on Router A will be placed in Active status.
The route to Network C on Router A will be placed in Passive status.
Router A will send query packets to all neighbor routers.
Router A will mark the link as down until regularly scheduled update packets are received.

3 Which three statements describe the operation of routing with EIGRP? (Choose three.)

As new neighbors are discovered, entries are placed in a neighbor table.
If the feasible successor has a higher advertised cost than the current successor route, then it becomes the primary route.
If hello packets are not received within the hold time, DUAL must recalculate the topology.
The reported distance is the distance to a destination as advertised by a neighbor.
EIGRP maintains full knowledge of the network topology in the topology table and exchanges full routing information with neighboring routers in every update.
EIGRP builds one routing table that contains routes for all configured routed protocols.

4 Which statements reflect the process of common LAN protocols accessing the media? (Choose three.)

Ethernet is a non-deterministic protocol that allows the first node that accesses the medium to transmit its data.
Token Ring is a deterministic protocol that allows only one node within the ring a turn to transmit data before passing control to the next node.
Token Ring is a non-deterministic protocol that uses a first-come, first-serve approach for nodes to seize the token and transmit data.
FDDI networks use a deterministic approach to assure that each node has fair access to the medium.
Ethernet and Token Ring networks avoid collisions by allowing only one node to transmit at a time.
Ethernet is a deterministic protocol that uses CSMA/CD to assure that each node takes turns to access the medium.

5 What command is used to verify that a Frame Relay link is up and operational?

Router# show line
Router# show version
Router# show interface
Router# show frame-relay
Router# show frame-relay status

6 Which statement describes the store and forward transmission mode of an Ethernet switch?

It is also referred to as a hybrid mode or as error sensing mode.
It requires the switch to read the first 64 bytes of an Ethernet frame and then begins to forward the data.
It decreases the latency of the transmission but has very little error detection.
It increases latency with large frames, but error detection is high.

7 Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately?

application
presentation
session
transport
network

8 A network administrator wants to reconfigure a router. Which of the following will clear the running-configuration in preparation for the reconfiguration?

erase running-config and then reload
erase running-config
reload
no running-config and then reload
erase startup-config and then reload
delete running-config

9 Identify the correct pairing of protocols and their classifications.

Routed - IP, RIP
Routed - RIP, OSPF
Routing - IPX, RIP
Routing - OSPF, RIP

10

A packet destined for 10.188.12.12 is received by a router with the configuration shown in the graphic. The routing table displays the following lines:

10.0.0.0/24 is subnetted, 3 subnets
R 10.5.5.0 [120/1] via 10.20.20.2, 00:00:18, Serial0/0
C 10.20.20.0 is directly connected, Serial0/0
C 10.10.10.0 is directly connected, FastEthernet0/0

What will happen?

The packet will be forwarded to the next hop.
The router will forward the packet out all ports.
The packet will be dropped.
The router will forward the packet out all ports except the receiving port.

11 When a user generates information to be sent on a network, in what order does data encapsulation occur?

data, frame, segment, packet, bits
data, packet, frame, segment, bits
data, packet, segment, frame, bits
data, segment, packet, frame, bits

12 Which of the following is a non-ISDN compatible device that requires a terminal adapter to connect to an ISDN network?

NT1
NT2
TA1
TA2
TE1
TE2

13 Which utility shows the route a packet takes to reach its destination?

netstat
ping
Telnet
traceroute

14 Which fields are common to the TCP and the UDP segments? (Choose two.)

source address
sequence number
acknowledgement number
options
checksum
destination port

15 Which automatic process is started first whenever power is applied to a Cisco router?

empties contents of NVRAM
looks for the configuration file
performs a POST
starts the operating system

What is the correct order of the layers of the OSI reference model, starting at the lowest layer and working up the model?

data link, physical, transport, network, presentation, session, application
physical, data link, network, session, transport, presentation, application
physical, data link, network, transport, presentation, session, application
physical, data link, network, transport, session, presentation, application
application, session, presentation, transport, data link, network, physical

17 What is the term for the cabling that connects the customer premises equipment to the CO switch?

demarc
local loop
final mile
DTE
trunk line

18 How is spanning-tree path cost determined by default?

total hop count
sum of the costs based on bandwidth
dynamically determined based on load
individual link cost based on latency

19 Which of the following is an alternative to a dedicated WAN link?

X.25
ISDN
T1
DS3

20 Which of the following describes the CIR in a Frame Relay network?

guaranteed data rate that the service provider commits to providing
maximum data burst rate that the switch can handle
number of simultaneous virtual circuits available from a service provider
number of simultaneous DLCIs that can be established across the cloud

21 What is the length of a MAC address?

12 bits
24 bits
38 bits
48 bits

22 Which of the following does CHAP authentication use to increase security on a PPP link? (Choose three.)

periodic verification of identity while the link is established
secure recording of playback attacks
transmission of the CHAP password in plain text
the use of a unique and random challenge value
the use of a two-way handshake of CHAP exchanges
identity verification at the startup of a link

23 What is the purpose of the IOS enable secret command?

to set password protection on incoming Telnet sessions
to set password protection on the console terminal
to allow a user access to User mode
to allow a user to enter a password that will be encrypted

24 Which configuration parameters can a host receive from a DHCP server? (Choose three.)

MAC address
outside global address
DNS server address
DHCP helper address
default gateway address
IP address/subnet mask

25 What are the two basic functions that a router uses to relay packets?

filtering and switching
path determination and filtering
path determination and switching
traffic analysis and filtering

26

The internetwork in the diagram is assigned a Class B network address of 130.68.0.0. The network cannot use subnet zero but will use a single network mask for the internetwork. What subnet mask should be assigned to ensure the maximum number of host addresses are available for use on each subnetwork?

255.255.224.0
255.255.240.0
255.255.248.0
255.255.252.0
255.255.255.224
255.255.255.240

27 What operations can be executed from the Router> prompt? (Choose two.)

enter privileged mode with the enable command
modify passwords
modify the router name with the hostname command
view basic router status
view passwords
view the running-configuration with the show running-config command

28

A partial configuration of a Catalyst 1900 switch is shown in the graphic. Why do the following commands fail to delete VLAN1 and VLAN2? (Choose two.)

no vlan 1
no vlan 2

VLAN 1 is not configured on the switch.
VLAN 1 is the default VLAN and cannot be removed.
The network administrator is using the wrong command.
The switch is configured in VTP client mode.
Ports are still assigned to VLAN 1 and VLAN 2 and the VLANs cannot be deleted until those assignments are removed.

29 Which item is a commonly used metric?

ARP
Hop Count
Acknowledgment Number
Time

30 What are the two authentication options supported by PPP?

PAP and clear text
PAP and CHAP
CHAP and clear text
PPP does not support authentication

In an effort to minimize traffic, an administrator decided to keep web traffic from causing the ISDN link to come up by denying WWW traffic to the 192.168.20.5 remote server. Two minutes after making changes to the configuration as shown in the graphic, the administrator notices that web traffic is still passing over the link. What is the most likely cause of the problem?

The dialer-group has not been applied to outbound traffic.
The access-list is incorrectly configured.
Broadcasts are creating "interesting" traffic and keeping the link active.
The command ip access-group 128 out is missing from the bri0/0 interface.

32 How is an access list implemented in a router?

Enter the access list statements globally and apply the list globally.
Enter the access list statements globally and apply the list to a specific interface.
Enter the access list statements on a specific interface and apply the list globally.
Enter the access list statements on a specific interface and apply the list to that same interface.

33 Which utility can be used to verify connectivity through all seven layers of the OSI model?

netstat
ping
Telnet
traceroute

34 Which of the following are characteristics of RIPv2? (Choose two.)

requires classful addressing for configured interfaces
forwards routing updates using multicasts
forwards routing updates using broadcasts
operates as a hybrid routing protocol
supports variable-length subnet masking

35 What are the primary functions of a Layer 2 Ethernet switch? (Choose three.)

filters traffic between LAN segments
achieves greater bandwidth per user
prevents hosts from sending broadcasts
increases the number of broadcast domains through VLANs
decreases the number of collision domains through VLANs

36 Which protocol of the TCP/IP model internet layer provides connectionless, best-effort-delivery of datagrams?

ARP
ICMP
IP
RARP
TCP
DNS

37 Which ISDN channels are used for voice, video, and data?

A channels
B channels
E channels
D channels
Q channels
E channels

38 Which statements are true regarding OSPF DR and BDR elections? (Choose three.)

The command ip ospf prioritypriority number is used to set the priority value that determines the DR.
The default priority value for a router connected to a multiaccess network is 0.
The router with the highest MAC address is elected as the DR when the default priority values are used.
The loopback interface must be configured on the DR.
The BDR is selected from remaining routers and uses the same criteria applied in the DR election.
There are no DRs or BDRs on point-to-point links.

39

Refer to exhibit. Given the topology shown in the exhibit, what three commands are needed to configure EIGRP on the Paris router? (Choose three.)

Paris(config)# router eigrp 100
Paris(config)# router eigrp
Paris(config-router)# network 192.168.6.0
Paris(config-router)# network 192.168.7.0
Paris(config-router)# network 192.168.8.0
Paris(config-router)# network 192.168.9.0

40

Host A in the graphic has received its DHCP configuration from R1. Host A is unable to reach the Internet. What could cause this problem?

The DNS server is not on the same LAN as Host A.
The ip helper-address command must be configured on the Ethernet interface.
Host A did not receive the correct gateway address.
The DHCP service has not been enabled on interface e0.
The router IP address has been excluded from the DHCP pool.
The subnet mask in the network command is incorrect.

41 Which protocols or applications allow a network administrator to monitor a network? (Choose three.)

FTP
SNMP
RMON
syslog
DHCP
SMTP

42 What is the purpose of DLCIs in Frame Relay?

They determine the Frame Relay encapsulation type.
They identify the logical circuit between a local router and a Frame Relay WAN switch.
They represent the keepalives used to maintain the PVC in an active state.
They represent the physical address of the router attached to a Frame Relay network.

43 Which type of encapsulation is recommended to be used to connect two routers from different vendors through a dedicated point-to-point connection?

CIR
FCS
ANSI
PPP
HDLC

44 Which ISDN channel is used for call setup?

B
D
X
SS-7
PRI
BRI

45 In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another?

destination network address
source network address
source MAC address
well known port destination address

46 An administrator has an older 1900 switch located on the edge of the network. What can the network administrator do to ensure that it does not become the root bridge of the spanning-tree network?

decrease the BPDU hello timer update on the 1900
assign the highest IP address to the switch that should be the root
assign the lowest IP address to new root bridge
assign the lowest priority to the switch that should be the root
assign the highest priority to the new root bridge
decrease the BID on the 1900 switch

47

A ping 192.1.1.20 command is issued on workstation A to determine if workstation B can be reached. What events will occur if this command is successful? (Choose two.)

The router will block the ping request message.
The router will reply to the echo request with a proxy ping response.
Workstation A will send a UDP ping request message to workstation B.
Workstation B will send a UDP ping reply message to workstation A.
Workstation A will send an ICMP echo request message to workstation B.
Workstation B will send an ICMP echo reply message to workstation A.

48 What are the advantages of OSPF in comparison with RIP v2? (Choose two.)

OSPF provides support for Classless Interdomain Routing but RIP v2 does not.
OSPF may result in faster convergence, due to triggered updates.
OSPF's built-in features make it easy to design, implement, and troubleshoot.
OSPF routers build a complete view of the network, reducing the potential for routing loops.
OSPF sends periodic link state advertisements to keep the link active.
OSPF routers have lower memory and processor requirements.

49 Which of the following represents a group of routers under a common administration and is required when configuring routing protocols such as EIGRP?

control group
autonomous system
corporate system
Domain Name System
local-area network
wide-area network

50 Which layer of the OSI model establishes, manages, and terminates sessions between applications?

Layer 7
Layer 6
Layer 5
Layer 4
Layer 3
Layer 2

51 Which command displays the active configuration of a router?

Router# show flash
Router# show configuration
Router# show running-config
Router# show startup-config

52 Which command will verify that a router is configured with RIPv2 and that the hold-down timer and administrative distance are set to the default values?

show ip route
show interface brief
show ip protocols
show interface

53 Which command will display statistics for all interfaces configured on a router?

list interfaces
show interfaces
show processes
show statistics

54 What is the reference point for a connection between a TA and a non-ISDN-compatible device?

R
S
T
U

55 Which of the following are true regarding bridges and switches? (Choose two.)

Bridges are faster than switches because they have fewer ports.
A switch is a multiport bridge.
Bridges and switches learn MAC addresses by examining the source MAC address of each frame received.
A bridge will forward a broadcast but a switch will not.
Bridges and switches increase the size of a collision domain.

56 How many host addresses may be assigned on each subnetwork when using the 130.68.0.0 network address with a subnet mask of 255.255.248.0?

30
256
2046
2048
4094
4096

57 Which layer of the OSI model can provide connection-oriented and reliable data transfer between two hosts?

application
presentation
session
transport

58 Which device imposes boundaries on broadcast traffic?

bridge
repeater
router
transceiver

59 Which packet-switched WAN technologies are characterized by the use of Permanent Virtual Circuits (PVCs)?

Frame Relay and ISDN
Frame Relay and X.25
ISDN and X.25
ISDN only

60 How are VLANs configured?

by moving switches to different router ports
by changing switchports for each host on the segment
by physically moving equipment to a different network
through software
through hardware
automatically with a plug and play module

When using distance-vector routing protocols in a frame relay environment with multiple DLCIs on a single physical router interface, split-horizon issues must be resolved. According to Cisco best practices, what should be configured to manage these issues?

a single network address
multiple LMIs
subinterfaces
multiple IP addresses on the same subnet

62 What is another term for latency?

backoff algorithm
hold-down timer
propagation delay
redundancy

63 A static route needs to be configured to network 192.17.10.0/24. This route should have an administrative distance of 180. Which command will configure this route if the IP address of the next hop interface is 10.15.0.1?

Router(config)# ip route 192.17.10.1 255.255.255.0 10.15.0.0 180
Router(config)# ip route 192.17.10.0 255.255.255.0 10.15.0.1 180
Router(config)# ip route 10.15.0.1 192.17.10.0 255.255.255.0 180
Router (config)# ip static-route 192.17.10.0 255.255.255.255 10.15.0.1 180
Router (config)# ip default-route 192.17.10.0 255.255.255.255 10.15.0.1 180

64 Which statement best describes the difference between exterior routing protocols and interior routing protocols?

Exterior routing protocols are used for communications within a single autonomous system, and interior routing protocols are used for communications between autonomous systems.
Interior routing protocols are used between neighbor routers, and exterior routing protocols are used between peer routers.
Interior routing protocols are used by mid size companies, and exterior routing protocols are used by large organizations.
Interior routing protocols are used for communications within a single autonomous system, and exterior routing protocols are used for communications between autonomous systems.

65

The administrator of the network shown in the graphic would like to use VLSM to subnet the company's Class C address. Which subnet masks should be used on the LANs and serial links to waste the fewest host addresses? (Choose three.)

255.255.255.0
255.255.255.192
255.255.255.224
255.255.255.240
255.255.255.248
255.255.255.252

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