CCNA 1 Final

What are three characteristics of the CSMA/CD process? (Choose three.)

*After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired. *All of the devices on a segment see data that passes on the network medium. *A device listens and waits until the media is not busy before transmitting.

Which two statements describe features of an IPv4 routing table on a router? (Choose two.)​

*Directly connected interfaces will have two route source codes in the routing table: C and S . *If a default static route is configured in the router, an entry will be included in the routing table with source code S .

Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.)

*NAT provides a solution to slow down the IPv4 address depletion. *NAT introduces problems for some applications that require end-to-end connectivity.

Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) —> Case A

*implements trailer with frame check sequence for error detection *applies delimiting of Ethernet frame fields to synchronize communication between nodes

Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) —> Case B

*integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper *implements CSMA/CD over legacy shared half-duplex media

What are two characteristics shared by TCP and UDP? (Choose two.)

*port numbering *use of checksum

A network administrator is adding a new LAN to a branch office. The new LAN must support 25 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.224

Refer to the exhibit. A company uses the address block of 128.107.0.0/16 for its network. What subnet mask would provide the maximum number of equal size subnets while providing enough host addresses for each subnet in the exhibit?

255.255.255.128

A network administrator is adding a new LAN to a branch office. The new LAN must support 200 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.0

Which subnet would include the address 192.168.1.96 as a usable host address?

192.168.1.64/26

What would be the interface ID of an IPv6 enabled interface with a MAC address of 1C-6F-65-C2-BD-F8 when the interface ID is generated by using the EUI-64 process?

1E6F:65FF:FEC2:BDF8

Refer to the exhibit. A network engineer has been given the network address of 192.168.99.0 and a subnet mask of 255.255.255.192 to subnet across the four networks shown. How many total host addresses are unused across all four subnets?

200

What is the subnet ID associated with the IPv6 address 2001:DA48:FC5:A4:3D1B::1/64?

2001:DA48:FC5:A4::/64​

A network administrator wants to have the same network mask for all networks at a particular small site. The site has the following networks and number of devices: IP phones - 22 addressesPCs - 20 addresses neededPrinters - 2 addresses neededScanners - 2 addresses needed The network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks?

255.255.255.224

A network administrator wants to have the same subnet mask for three subnetworks at a small site. The site has the following networks and numbers of devices: Subnetwork A: IP phones - 10 addressesSubnetwork B: PCs - 8 addressesSubnetwork C: Printers - 2 addressesWhat single subnet mask would be appropriate to use for the three subnetworks?

255.255.255.240

What service is provided by HTTP?

A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.

What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.)

A large number of ARP request and reply messages may slow down the switching process, leading the switch to make many changes in its MAC table. The ARP request is sent as a broadcast, and will flood the entire subnet.

Which scenario describes a function provided by the transport layer?

A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.

Refer to the exhibit. Which protocol was responsible for building the table that is shown?

ARP

What service is provided by SMTP?

Allows clients to send email to a mail server and the servers to send email to other servers.

What service is provided by Internet Messenger?

An application that allows real-time chatting among remote users.

Which two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyzer? (Choose two.)

Capture traffic during peak utilization times to get a good representation of the different traffic types. Perform the capture on different network segments.

What happens when the transport input ssh command is entered on the switch vty lines?

Communication between the switch and remote users is encrypted.

An administrator defined a local user account with a secret password on router R1 for use with SSH. Which three additional steps are required to configure R1 to accept only encrypted SSH connections? (Choose three.)

Configure the IP domain name on the router Generate the SSH keys. Enable inbound vty SSH sessions

A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?

DHCP

Match the application protocols to the correct transport protocols.

DHCP TFTP

A client packet is received by a server. The packet has a destination port number of 53. What service is the client requesting?

DNS

Which type of server relies on record types such as A, NS, AAAA, and MX in order to provide services?

DNS

A network administrator notices that some newly installed Ethernet cabling is carrying corrupt and distorted data signals. The new cabling was installed in the ceiling close to fluorescent lights and electrical equipment. Which two factors may interfere with the copper cabling and result in signal distortion and data corruption? (Choose two.)

EMI RFI

A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?

Exit privileged EXEC mode and press Enter.

Which range of link-local addresses can be assigned to an IPv6-enabled interface?​

FE80::/10

A network technician is researching the use of fiber optic cabling in a new technology center. Which two issues should be considered before implementing fiber optic media? (Choose two.)

Fiber optic cabling requires different termination and splicing expertise from what copper cabling requires. Fiber optic provides higher data capacity but is more expensive than copper cabling.

Match the application protocols to the correct transport protocols. TCP

HTTP FTP SMTP

A client packet is received by a server. The packet has a destination port number of 143. What service is the client requesting?

IMAP

Refer to the exhibit. The network administrator has assigned the LAN of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 prefix. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the properties of the workgroup server to allow connectivity to the Internet?

IP address: 192.168.10.38 subnet mask: 255.255.255.248, default gateway: 192.168.10.33

What two pieces of information are displayed in the output of the show ip interface brief command? (Choose two.)

IP addresses

What three requirements are defined by the protocols used in network communcations to allow message transmission across a network? (Choose three.)

If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast. If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.

Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) —> Case C

Implements trailer with frame check sequence for error detection implements a process to delimit fields within an Ethernet 2 frame

What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?

It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.

What is an advantage to using a protocol that is defined by an open standard?

It encourages competition and promotes choices.

How does the service password-encryption command enhance password security on Cisco routers and switches?

It encrypts passwords that are stored in router or switch configuration files.

A client is using SLAAC to obtain an IPv6 address for its interface. After an address has been generated and applied to the interface, what must the client do before it can begin to use this IPv6 address?

It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.

A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in its ARP cache. How will the device obtain a destination MAC address?

It will send an ARP request for the MAC address of the default gateway.

Refer to the exhibit. Host B on subnet Teachers transmits a packet to host D on subnet Students. Which Layer 2 and Layer 3 addresses are contained in the PDUs that are transmitted from host B to the router?

Layer 2 destination address = 00-00-0c-94-36-abLayer 2 source address = 00-00-0c-94-36-bbLayer 3 destination address = 172.16.20.200Layer 3 source address = 172.16.10.200

What is an advantage for small organizations of adopting IMAP instead of POP?

Messages are kept in the mail servers until they are manually deleted from the email client.

Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC2. In this scenario, what will happen next?​

PC2 will send an ARP reply with its MAC address.

Which two protocols operate at the top layer of the TCP/IP protocol suite? (Choose two.)

POP DNS

Refer to the exhibit. The IP address of which device interface should be used as the default gateway setting of host H1?

R1: G0/0

A client packet is received by a server. The packet has a destination port number of 22. What service is the client requesting?

SSH

A client packet is received by a server. The packet has a destination port number of 69. What service is the client requesting?

TFTP

What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?

The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages.

What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?​

The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages.

Which two statements are correct in a comparison of IPv4 and IPv6 packet headers? (Choose two.)

The Source Address field name from IPv4 is kept in IPv6. The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6.

Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?

The administrator must first enter privileged EXEC mode before issuing the command.

What will happen if the default gateway address is incorrectly configured on a host?

The host cannot communicate with hosts in other networks.

The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command?

The switch can be remotely managed from a host on another network.

Refer to the exhibit. What is wrong with the displayed termination?

The untwisted length of each wire is too long.

Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)

There are 4 hops between this device and the device at 192.168.100.1. There is connectivity between this device and the device at 192.168.100.1.

Which value, that is contained in an IPv4 header field, is decremented by each router that receives a packet?

Time-to-Live

Data is being sent from a source PC to a destination server. Which three statements correctly describe the function of TCP or UDP in this situation? (Choose three.)

UDP segments are encapsulated within IP packets for transport across the network. The UDP destination port number identifies the application or service on the server which will handle the data The source port field identifies the running application or service that will handle data returning to the PC.

What are the two most effective ways to defend against malware? (Choose two.)

Update the operating system and other application software. Install and update antivirus software.

Which wireless technology has low-power and data rate requirements making it popular in home automation applications?

ZigBee

What are two primary responsibilities of the Ethernet MAC sublayer? (Choose two.)

accessing the media data encapsulation

An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet?​

all IPv6 configured routers on the local link​

Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)

application session presentation

Refer to the exhibit. If Host1 were to transfer a file to the server, what layers of the TCP/IP model would be used?

application, transport, Internet, and network access layers

What characteristic describes antispyware?

applications that protect end devices from becoming infected with malicious software

Three bank employees are using the corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other corporate managers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types?

audio conference, financial transactions, web page

A company has a file server that shares a folder named Public. The network security policy specifies that the Public folder is assigned Read-Only rights to anyone who can log into the server while the Edit rights are assigned only to the network admin group. Which component is addressed in the AAA network service framework?

authorization

What are two characteristics of IP? (Choose two.)

does not require a dedicated end-to-end connection operates independently of the network media

Which frame field is created by a source node and used by a destination node to ensure that a transmitted data signal has not been altered by interference, distortion, or signal loss?

frame check sequence field

What does the term "attenuation" mean in data communication?

loss of signal strength as distance increases

What are two common causes of signal degradation when using UTP cabling? (Choose two.)

low-quality cable or connectors improper termination

What characteristic describes a Trojan horse?

malicious software or code running on an end device

Refer to the exhibit. The switches are in their default configuration. Host A needs to communicate with host D, but host A does not have the MAC address for its default gateway. Which network hosts will receive the ARP request sent by host A?

only hosts B, C, and router R1

A wired laser printer is attached to a home computer. That printer has been shared so that other computers on the home network can also use the printer. What networking model is in use?

peer-to-peer (P2P)

A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)

ping ipconfig nslookup

What are proprietary protocols?

protocols developed by organizations who have control over their definition and operation

What is a function of the data link layer?

provides for the exchange of frames over a common local media

An employee of a large corporation remotely logs into the company using the appropriate username and password. The employee is attending an important video conference with a customer concerning a large sale. It is important for the video quality to be excellent during the meeting. The employee is unaware that after a successful login, the connection to the company ISP failed. The secondary connection, however, activated within seconds. The disruption was not noticed by the employee or other employees.What three network characteristics are described in this scenario? (Choose three.)

quality of service fault tolerance security

Refer to the exhibit. If PC1 is sending a packet to PC2 and routing has been configured between the two routers, what will R1 do with the Ethernet frame header attached by PC1?

remove the Ethernet header and configure a new Layer 2 header before sending it out S0/0/0

A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.)

security interference coverage area

What characteristic describes adware?

software that is installed on a user device and collects information about the user

When a switch configuration includes a user-defined error threshold on a per-port basis, to which switching method will the switch revert when the error threshold is reached?

store-and-forward

Which switching method drops frames that fail the FCS check?

store-and-forward switching

Which information does the show startup-config command display?​

the contents of the saved configuration file in the NVRAM

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?

the network performance baseline

Why would a Layer 2 switch need an IP address?

to enable the switch to be managed remotely

What is the purpose of the TCP sliding window?

to request that a source decrease the rate at which it transmits data

A user is complaining that an external web page is taking longer than normal to load.The web page does eventually load on the user machine. Which tool should the technician use with administrator privileges in order to locate where the issue is in the network?

tracert

Which two traffic types use the Real-Time Transport Protocol (RTP)? (Choose two.)

video voice

Users report that the network access is slow. After questioning the employees, the network administrator learned that one employee downloaded a third-party scanning program for the printer. What type of malware might be introduced that causes slow performance of the network?

worm