CCNA4 v6.0 Pretest Exam - Online Assessment

1. Question

The buffers for packet processing and the running configuration file are temporarily stored in which type of router memory?

flash
NVRAM
RAM
ROM

2. Question

How does implementing STP allow for a scalable network design?

It eliminates Layer 2 loops from redundant links.
It provides failover services when duplicate network equipment is used.
It filters broadcasts and other undesirable traffic from the network.
It prevents local traffic from propagating to other parts of the network.

3. Question

A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used?

DSL
dial-up
satellite
cell modem
cable modem

4. Question

What is a characteristic of a default static route? 

It backs up a route already discovered by a dynamic routing protocol.
It uses a single network address to send multiple static routes to one destination address.
It identifies the gateway IP address to which the router sends all IP packets for which it does not have a learned or static route.
It is configured with a higher administrative distance than is the original dynamic routing protocol.

5. Question

Which three pairs of trunking modes will establish a functional trunk link between two Cisco switches? (Choose three.)

dynamic desirable - dynamic desirable
dynamic auto - dynamic auto
dynamic desirable - dynamic auto
dynamic desirable - trunk
access - trunk
access - dynamic auto

6. Question

On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?

FastEthernet0/1
VLAN 1
vty 0
console 0

7. Question

Which statement describes a route that has been learned dynamically?

It is automatically updated and maintained by routing protocols.
It is unaffected by changes in the topology of the network.
It has an administrative distance of 1.
It is identified by the prefix C in the routing table.

8. Question

Refer to the exhibit. Which switch will be the root bridge after the election process is complete?

CCNA4 v6.0 Pretest Exam 001

S1
S2
S3
S4

9. Question

What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)

ARP
DHCP
DNS
FTP
NAT
PPP

10. Question

In addition to the cable length, what two factors could interfere with the communication carried over UTP cables? (Choose two.)

crosstalk
bandwidth
size of the network
signal modulation technique
electromagnetic interference

11. Question

Which information does a switch use to keep the MAC address table information current?

the destination MAC address and the incoming port
the destination MAC address and the outgoing port
the source and destination MAC addresses and the incoming port
the source and destination MAC addresses and the outgoing port
the source MAC address and the incoming port
the source MAC address and the outgoing port

12. Question

A network engineer has been tasked with connecting two large autonomous systems (AS) together over the Internet. Which routing protocol should be selected?

EIGRP
OSPFv2
IS-IS
BGP

13. Question

What important information is examined in the Ethernet frame header by a Layer 2 device in order to forward the data onward?

source MAC address
source IP address
destination MAC address
Ethernet type
destination IP address

14. Question

What are two reasons to implement passive interfaces in the EIGRP configuration of a Cisco router? (Choose two.)

to provide increased network security
to shut down unused interfaces
to avoid unnecessary update traffic
to mitigate attacks coming from the interfaces
to exclude interfaces from load balancing

15. Question

Which two functions are primary functions of a router? (Choose two.)

packet forwarding
microsegmentation
domain name resolution
path selection
flow control

16. Question

Which two devices allow hosts on different VLANs to communicate with each other? (Choose two.)

Layer 2 switch
Layer 3 switch
hub
repeater
router

17. Question

An EIGRP router loses the route to a network. Its topology table contains two feasible successors to the same network. What action will the router take?

The DUAL algorithm is recomputed to find an alternate route.
The router uses the default route.
The best alternative backup route is immediately inserted into the routing table.
The router will query neighbors for an alternate route.

18. Question

What three blocks of addresses are defined by RFC 1918 for private network use? (Choose three.)

10.0.0.0/8
172.16.0.0/12
192.168.0.0/16
100.64.0.0/14
169.254.0.0/16
239.0.0.0/8

19. Question

Which two pieces of information are required when creating a standard access control list? (Choose two.)

destination address and wildcard mask
source address and wildcard mask
subnet mask and wildcard mask
access list number between 100 and 199
access list number between 1 and 99

20. Question

Match the subnetwork to a host address that would be included within the subnetwork. (Not all options are used.)

Sort elements

192.168.1.63
192.168.1.68
192.168.1.128
192.168.1.48
192.168.1.121

192.168.1.64/27

192.168.1.32/27

192.168.1.96/27

21. Question

Which criterion is preferred by the router to choose a router ID?

the IP address of the highest configured loopback interface on the router
the IP address of the highest active interface on the router
the router-id rid command
the IP address of the highest active OSPF-enabled interface

22. Question

A network administrator is entering the command ipv6 unicast-routing to start configuring DHCPv6 operation on a router. Which statement describes the function of this command?

It is required for sending ICMPv6 RA messages.
It is required to configure stateful DHCPv6 server on the router.
It is required to configure stateless DHCPv6 server on the router.
It is required for enabling DNS service in DHCPv6 configurations.

23. Question

What three services are provided by the transport layer? (Choose three.)

flow control
encryption of data
path determination
connection establishment
error recovery
bit transmission
data representation

24. Question

Which TCP/IP model layer is closest to the end user?

application
internet
network access
transport

25. Question

When applied to a router, which command would help mitigate brute-force password attacks against the router?

exec-timeout 30
service password-encryption
banner motd $Max failed logins = 5$
login block-for 60 attempts 5 within 60

26. Question

Which circumstance would result in an enterprise deciding to implement a corporate WAN?

when its employees become distributed across many branch locations
when the network will span multiple buildings
when the number of employees exceeds the capacity of the LAN
when the enterprise decides to secure its corporate LAN

27. Question

A corporation is searching for an easy and low cost solution to provide teleworkers with a secure connection to headquarters. Which solution should be selected?

dial-up connection
leased line connection
site-to-site VPN over the Internet
remote access VPN over the Internet

28. Question

Which three statements are true about PPP? (Choose three.)

PPP can use synchronous and asynchronous circuits.
PPP can only be used between two Cisco devices.
PPP carries packets from several network layer protocols in LCPs.
PPP uses LCPs to establish, configure, and test the data-link connection.
PPP uses LCPs to agree on format options such as authentication, compression, and error detection.

29. Question

A network administrator is configuring a PPP link with the commands:

R1(config-if)# encapsulation ppp
R1(config-if)# ppp quality 70

What is the effect of these commands?

The PPP link will be closed down if the link quality drops below 70 percent.
The NCP will send a message to the sending device if the link usage reaches 70 percent.
The LCP establishment phase will not start until the bandwidth reaches 70 percent or more.
The PPP link will not be established if more than 30 percent of options cannot be accepted.

30. Question

What is the protocol that provides ISPs the ability to send PPP frames over DSL networks?

PPPoE
CHAP
ADSL
LTE

31. Question

Refer to the exhibit. All routers are successfully running the BGP routing protocol. How many routers must use EBGP in order to share routing information across the autonomous systems?

CCNA4 v6.0 Pretest Exam 002

2
3
4
5

32. Question

Which three values or sets of values are included when creating an extended access control list entry? (Choose three.)

access list number between 1 and 99
access list number between 100 and 199
default gateway address and wildcard mask
destination address and wildcard mask
source address and wildcard mask
source subnet mask and wildcard mask
destination subnet mask and wildcard mask

33. Question

Which pillar of the Cisco IoT System allows data to be analyzed and managed at the location where it is generated?

data analytics
fog computing
network connectivity
application enhancement platform

34. Question

What two protocols are supported on Cisco devices for AAA communications? (Choose two.)

VTP
LLDP
HSRP
RADIUS
TACACS+

35. Question

What guideline is generally followed about the placement of extended access control lists?

They should be placed as close as possible to the source of the traffic to be denied.
They should be placed as close as possible to the destination of the traffic to be denied.
They should be placed on the fastest interface available.
They should be placed on the destination WAN link.

36. Question

What network monitoring tool copies traffic moving through one switch port, and sends the copied traffic to another switch port for analysis?

802.1X
SNMP
SPAN
syslog

37. Question

Match the term to the description. (Not all options are used.)

Sort elements

an interface that is presented with more traffic than it can handle.
measured in the number of bits that can be sent in a single second
packet that are buffered and played out in a steady stream
the variation in the latency between each received packet
the time it takes for a messages to travel from the source to the destination.

congestion

bandwidth

jitter

delay

38. Question

Which type of QoS marking is applied to Ethernet frames?

CoS
ToS
DSCP
IP precedence

39. Question

Users are reporting longer delays in authentication and in accessing network resources during certain time periods of the week. What kind of information should network engineers check to find out if this situation is part of a normal network behavior?

syslog records and messages
the network performance baseline
debug output and packet captures
network configuration files

40. Question

Which feature sends simulated data across the network and measures performance between multiple network locations?

LLDP
IP SLA
syslog
SPAN

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CCNA4 Pretest Exam - Online Assessment

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