CCNA DC Networking Practice Test

Exam: 640-911

Question 1 / 55 - Mode : Demo

90:00

What is the maximum number of hops, the RIPv1 can handle?

A. Unlimited

B. 10

C. 20

D. 15

Which connectionless protocol, operating at Layer 3 of the OSI model, is responsible for sending a one-way datagram to a destination device without advanced warning?

A. EIGRP

B. BGP

C. OSPF

D. IP

What is the dotted hexadecimal equivalent of the IP address 192.168.10.99?

A. D1.B8.10.99

B. D0.9F.A0.F9

C. AC.9F.0B.99

D. C0.A8.0A.63

What subnet mask should be chosen to create 40 subnets with a Class B network?

A. 255.255.248.0

B. 255.255.224.0

C. 255.255.240.0

D. 255.255.252.0

E. 255.255.255.128

Which topology is the most expensive to implement?

A. Point-to-Point

B. Bus

C. Mesh

D. Hub and spoke

What characteristic do TCP and UDP have in common?

A. They are capable of performing a very limited form of error checking

B. They operate at the transport layer of the OSI model

C. They provide service on a best-effort basis and do not guarantee packet delivery

D. They provide no special features that recover lost or corrupted packets

Which component of an Ethernet MAC address identifies the manufacturer of the NIC card?

A. Broadcast bit

B. LAA bit

C. OUI

D. Vendor assigned address

What are the characteristics of the 24-bit OUI of an Ethernet MAC address? (Choose two)

A. It contains two bits that matter only when used in the source address

B. It contains two bits that matter only when used in the destination address

C. It identifies the manufacturer of the NIC card

D. It uniquely identifies the Ethernet hardware

What feature of IPv6 will make the DHCP unnecessary?

A. SSL

B. DHCPv6

C. Stateless autoconfiguration

D. Link-local addressing

The OSI model breaks network communications into smaller, simpler parts. Which OSI model benefit is this a description of?

A. Reduced complexity

B. Simplifying teaching and learning

C. Accelerating evolution

D. Standardizing interfaces

Which bits are used in 802.1w flags and are not used in 802.1D flags? (Choose two)

A. Agree

B. TCA

C. Prop

D. TC

How does a switch handle a unicast frame when it does not have an entry for the destination address?

A. It filters the frame.

B. It forwards the frame.

C. It floods the frame.

D. The frame is dropped.

You are given an IP address of 192.168.1.12/27.

Determine the subnet ID, broadcast address, and usable address range of this subnet.

A. The usable range is 192.168.1.1 to 192.168.1.62, the subnet ID is 192.168.1.0, the broadcast address is 192.168.1.63

B. The usable range is 192.168.1.1 to 192.168.2.254, the subnet ID is 192.168.1.0, the broadcast address is 192.168.2.255

C. The usable range is 192.168.1.1 to 192.168.1.126, the subnet ID is 192.168.1.0, the broadcast address is 192.168.1.127

D. The usable range is 192.168.1.1 to 192.168.1.30, the subnet ID is 192.168.1.0, the broadcast address is 192.168.1.31

Which command is entered next after enabling SVI for VLAN 20 using the IP address and mask 10.1.1.1/24 on a Cisco Nexus switch when configuring an SVI?

A. no shutdown

B. ip address 10.1.1.1/24

C. interface vlan 20

D. interface-vlan feature

E. feature interface-vlan

F. vlan interface 20

What are startup characteristics of a switch? (Choose two)

A. The CLI can be used to customize the configuration at any time

B. You can create a default configuration for continued operation

C. If the POST fails, you must configure the switch

D. An automatic setup program can be used to assign passwords for the admin role

Which two statements are true with respect to ACL guidelines? (Choose two)

A. The most specific statements go at the top of the ACL.

B. ACLs are created globally first before being applied to an interface.

C. Two ACLs per direction, two ACLs per interface, and two ACLs per protocol are permitted.

D. An ACL only filters traffic from going through a Nexus switch.

E. The last ACL test is always implicit "allow everything else" statement.

How many bits are contained in an IPv6 address?

A. 64

B. 48

C. 128

D. 32

Which three options are Layer 2 features of Cisco NX-OS? (Choose three)

A. GLBP

B. FCoE

C. MST

D. LACP

E. RIP

F. PIM

Which information is included in the output of the "show startup-config" command but not in the "show running-config" command?

A. License

B. Version number

C. Creation date

D. Switch name

What are characteristics of VTP operations? (Choose two)

A. The revision number is always 1 in transparent mode

B. VTP advertisements are sent every 10 minutes or whenever there is a change in the VLAN configurations

C. Each time a VTP server modifies its VLAN information, the VTP server increments the configuration revision number by one

D. A device that receives VTP advertisements must check various parameters before incorporating the received VLAN information

Which of the following routing protocols is an Exterior Gateway Protocol?

A. BGP

B. RIP

C. IGP

D. OSPF

Which Cisco NX-OS design feature makes it possible to nondisruptively perform complete image upgrades without affecting the data forwarding plane?

A. Modular software design

B. Control plane and data plane functional separation

C. Integrated virtualization support for Layer 2 and Layer 3

D. Cisco NX-OS ISSU

How does a traffic find the appropriate host computer once it is on the destination network?

A. APIPA address

B. Host IP address

C. Host MAC address

D. Host name

You are given an IP address of 172.16.3.0/23.

What is the usable range of addresses within this subnet?

A. 172.16.0.0 to 172.16.4.254

B. 172.16.3.1 to 172.16.4.254

C. 172.16.1.0 to 172.16.3.254

D. 172.16.2.1 to 172.16.3.254

What is defined by RFC 4193?

A. Public IPv4 addresses

B. Link-local IPv6 unicast addresses

C. Unique local IPv6 unicast addresses

D. Private IPv4 addresses

What is required to connect multiple VLANs together?

A. Layer 3 device

B. Trunk

C. Hub

D. Repeater

Which key or key sequence would you use to determine the syntax of a particular CLI command?

A. Esc-F

B. Ctrl-C

C. ?

D. Tab

E. Ctrl-Z

Which Ethernet connection type is hot-swappable and allows connecting to different connection media?

A. MT-RJ

B. SFPs

C. GBICs

D. RJ-45

Identify the characteristics of Layer 3 addressing. (Choose two)

A. The OSI model uses a NSAP and a TCP/IP uses an IP address

B. MAC addresses are assigned to end devices such as hosts

C. In most cases, devices such as bridges and switches are not assigned a MAC address

D. Each NOS has its own Layer 3 address format

Which three STP protocols support fast convergence? (Choose three)

A. RPVST+

B. RSTP

C. PVST+

D. CST

E. MSTP

Which type of connector can a 1000BASE-LX10 SMF cable use?

A. DE-9 or 8P8C

B. Single LC/PC

C. RJ-45

D. Dual LC

What is the binary equivalent of the decimal number 1,291?

A. 10100001011

B. 11010101001

C. 10110011011

D. 10110111001

You have entered a command and received an error message that it is incomplete.

What character can you use to display more information about the command?

A. h

B. /

C. #

D. ?

What are the characteristics of port channel operation? (Choose two)

A. The Cisco Nexus Series switches support the bundling of up to 24 ports into a port channel

B. A port channel must be negotiated dynamically using LACP

C. When virtual device contexts are used, all the ports in a port channel must be in the same VDC

D. Port channels combine multiple physical links into single logical link

How would you abbreviate the IPv6 address 2001:0db8:3c4d:0015:0000:0000:1a2f:1a2b?

A. Remove the quartets that are all zeroes

B. Remove all the leading zeros

C. Remove the first quartet

D. Remove all of the zeroes

You have a Class A address of 10.1.18.2 and have applied the /20 mask.

What is the result of applying this mask? (Choose three)

A. The network ID is 10.0.16.0, the directed broadcast is 10.0.31.255, the first host is 10.0.16.1, and the last host is 10.0.31.254

B. It provides 12 bits for subnetting and 12 bits for hosts

C. It provides 22 bits for subnetting and 2 bits for hosts

D. The network ID is 10.0.18.0, the directed broadcast is 10.0.18.255, the first host is 10.0.18.1, and the last host is 10.0.18.254

E. It provides 4096 subnets and 4094 host addresses

F. It provides 256 subnets and 65534 host addresses

Which three options represent the default subnet mask associated with a Class A address? (Choose three)

A. 255.0.0.0

B. 255.255.255.0

C. 11111111.00000000.00000000.00000000

D. /24

E. /8

F. 00000000.11111111.11111111.11111111

G. /16

Which statements best describe the TCP segment sequencing process? (Choose two)

A. Each segment contains the sender and receiver port, the sequence number, and the acknowledgment number

B. The sender generates the sequence numbers before it transmits the segments

C. TCP reassembles the segments into the proper order at the sender end

D. Port numbers may vary throughout the connection

Which component is responsible for the interconnection of application sessions to the network layer?

A. TCP

B. CDP

C. LLDP

D. ARP

E. STP

What tasks should a VTP be responsible for? (Choose two)

A. It minimizes misconfigurations and configuration inconsistencies

B. It maintains VLAN configuration consistency by managing additions, deletions, and name changes

C. It inserts a 4-byte tag field into the original Ethernet frame

D. It carries the traffic of multiple VLANs over a single physical link

Which field in a MAC layer of the IEEE 802.3 Ethernet frame contains bits that signal the receiving computer that the transmission of the actual frame is about to start?

A. DSAP

B. FCS

C. SOF

D. SSAP

What subnet mask will create a required amount of 16 subnets within a Class B network?

A. 255.255.128.0

B. 255.255.254.0

C. 255.255.240.0

D. 255.255.192.0

Which part of the IP PDU header specifies the IP address of the sending node?

A. Source address

B. Protocol

C. Destination address

D. Options

Which three features does EIGRP support? (Choose three)

A. Load balancing

B. Classless routing

C. More overhead

D. Easy summarization

After trying to configure EIGRP on a Cisco Nexus switch you receive an error message. Which command must you enter first to configure EIGRP?

A. feature eigrp

B. autonomous-system 100

C. ip router eigrp N7K-2

D. router eigrp N7K-2

You are required to create 8 subnets in the 192.168.1.0/24 network.

What is the new network mask that will be used, and how many hosts can be used on each of the subnets? (Choose two)

A. Network mask /26

B. Network mask /25

C. 62 hosts

D. 30 hosts

E. 126 hosts

F. Network mask /27

Identify the characteristics of an unshielded twisted pair cable. (Choose two)

A. The number of twists in the wire pairs is static

B. When used as a networking medium, it has an impedance of 100 ohms

C. An advantage is its ability to cancel interference

D. It is a three-pair wire

What are the characteristics of 802.1s MSTP? (Choose two)

A. A failure in one instance can cause a failure in another instance

B. It groups a set of instances to single VLAN

C. It can group a set of VLANs to single spanning tree instance

D. The total number of spanning tree instances should match the number of redundant switch paths

How does peer-to-peer communication work? (Choose two)

A. Each layer depends on the OSI layer above it to provide a service

B. The physical layer encodes the data link frame into a pattern of bits for transmission

C. The data link layer presents data to the network subsystem

D. The protocols at each layer exchange packets of information between peer layers

Which layer of the OSI model is the transport layer?

A. Layer 5

B. Layer 1

C. Layer 2

D. Layer 4

Which device forms the connection points for LANs at Layer 2 of the OSI model?

A. Repeater

B. Switch

C. Router

D. Hub

Which STP protocol uses one 802.1D spanning-tree instance for the entire network?

A. RPVST+

B. CST

C. RSTP

D. MSTP

E. PVST+

Which two criteria does EIGRP use to make a composite metric for determining the best path to a destination? (Choose two)

A. Delay

B. Cost

C. Hop count

D. Weight

E. Bandwidth

Convert the binary number 10101101 to decimal.

A. 211

B. 201

C. 185

D. 173

Which Cisco NX-OS command mode allows access to the broadest range of commands?

A. Line Configuration Mode

B. Routing Protocol Configuration Mode

C. Global Configuration Mode

D. Interface Configuration Mode

While calculating your results take a moment to complete our simple survey!
How likely is it that you would recommend LearnCisco.net to a friend or colleague?
0	1	2	3	4	5	6	7	8	9	10

Not at all likely								Extremely likely
Why?

Cisco test CCNA 640-911

While calculating your results take a moment to complete our simple survey!

How likely is it that you would recommend LearnCisco.net to a friend or colleague?

Why?

How likely is it that you would recommend LearnCisco.net
to a friend or colleague?