Cisco Networking Final Exam Review

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

video
voice

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

ZigBee

Which layer of the TCP/IP model provides a route to forward messages through an internetwork?

internet

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

DNS

What are proprietary protocols?

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

What service is provided by DNS?

Resolves domain names, such as cisco.com, into IP addresses.

A client packet is received by a server. The packet has a destination port number of 110. What service is the client requesting?

POP3

What command can be used on a Windows PC to see the IP configuration of that computer?

ipconfig

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)

What characteristic describes a virus?

malicious software or code running on an end device

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

What service is provided by Internet Messenger?

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

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.)

RFI​
EMI

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?A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in the 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.

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

- 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

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

DNS

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

What characteristic describes a Trojan horse?

malicious software or code running on an end device

What service is provided by HTTPS?

Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.

A technician with a PC is using multiple applications while connected to the Internet. How is the PC able to keep track of the data flow between multiple application sessions and have each application receive the correct packet flows?

The data flow is being tracked based on the source port number that is used by each application.

A network administrator is adding a new LAN to a branch office. The new LAN must support 61 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.192

What characteristic describes a DoS attack?

an attack that slows or crashes a device or network service

What service is provided by SMTP?

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

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.

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

loss of signal strength as distance increases

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

POP
DNS

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

message size
message encoding
delivery options

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

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

security
quality of service
fault tolerance

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

improper termination
low-quality cable or connectors

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

192.168.1.64/26

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

- application
- session
- presentation

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

The host cannot communicate with hosts in other networks.

What are two features of ARP? (Choose two.)

- 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.

A network administrator is adding a new LAN to a branch office. The new LAN must support 90 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.128

What are two ICMPv6 messages that are not present in ICMP for IPv4? (Choose two.)

- Neighbor Solicitation
- Router Advertisement

A client packet is received by a server. The packet has a destination port number of 80. What service is the client requesting?

HTTP

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.

A technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem?

nslookup

Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)

- enables IPv4 and IPv6 to utilize the same physical medium
- places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame

OR

- handles communication between upper layer networking software and Ethernet NIC hardware
- adds Ethernet control information to network protocol data

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.

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

Communication between the switch and remote users is encrypted.

A disgruntled employee is using some free wireless networking tools to determine information about the enterprise wireless networks. This person is planning on using this information to hack the wireless network. What type of attack is this?

reconnaissance

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.

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

DHCP

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

- The ARP request is sent as a broadcast, and will flood the entire subnet.
- All ARP request messages must be processed by all nodes on the local network.

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

During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?

switch the packet to the directly connected interface

What characteristic describes antispyware?

applications that protect end devices from becoming infected with malicious software

A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen?

SSH

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 type of security threat would be responsible if a spreadsheet add-on disables the local software firewall?

Trojan horse

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

A network administrator is adding a new LAN to a branch office. The new LAN must support 4 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.248

What service is provided by POP3?

Retrieves email from the server by downloading the email to the local mail application of the client.

What two security solutions are most likely to be used only in a corporate environment? (Choose two.)

- virtual private networks
- intrusion prevention systems

What characteristic describes antivirus software?

applications that protect end devices from becoming infected with malicious software

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.

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

TFTP

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.

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

- places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame
- implements trailer with frame check sequence for error detection

OR

- 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
applies source and destination MAC addresses to Ethernet frame

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​

What are the three parts of an IPv6 global unicast address? (Choose three.)

- subnet ID
- global routing prefix
- interface ID

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.)

interference
security
coverage area

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 .

What method is used to manage contention-based access on a wireless network?

CSMA/CA

What is a function of the data link layer?

provides for the exchange of frames over a common local media

What is the purpose of the TCP sliding window?

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

What characteristic describes spyware?

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

Which switching method drops frames that fail the FCS check?

store-and-forward switching

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

FE80::/10

What service is provided by FTP?

Allows for data transfers between a client and a file server.

A user is attempting to access http://www.cisco.com/ without success. Which two configuration values must be set on the host to allow this access? (Choose two.)

- DNS server
- default gateway

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

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

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

What service is provided by BOOTP?

Legacy application that enables a diskless workstation to discover its own IP address and find a BOOTP server on the network.

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

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

- accessing the media
- data encapsulation

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

2001:DA48:FC5:A4::/64​

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

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.

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.

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 addresses
PCs - 20 addresses needed
Printers - 2 addresses needed
Scanners - 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

What characteristic describes identity theft?

the use of stolen credentials to access private data

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

What are three commonly followed standards for constructing and installing cabling? (Choose three.)

- cable lengths
- pinouts
- connector types

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

IMAP

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

- port numbering
- use of checksum

A client packet is received by a server. The packet has a destination port number of 21. What service is the client requesting?

FTP

What attribute of a NIC would place it at the data link layer of the OSI model?

MAC address

A network administrator is adding a new LAN to a branch office. The new LAN must support 10 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.240

What technique is used with UTP cable to help protect against signal interference from crosstalk?

twisting the wires together into pairs

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

SSH

What characteristic describes an IPS?

a network device that filters access and traffic coming into a network

What service is provided by DHCP?

Dynamically assigns IP addresses to end and intermediary devices.

Which wireless technology has low-power and low-data rate requirements making it popular in IoT environments?

Zigbee