Cisco Routing + Switching VOL 1 Flashcards

1. This definition refers to a comprehensive set of documents
2. Networking model
3. Networking architecture
4. Networking blueprint
5. All the above

A set of logical rules that devices must follow to communicate is called _________________

To define a protocol, TCP/IP uses documents called _________________

T/F: You can find RFC’s using any online search engine, such as rfc-editor.org

The TCP/IP application layer protocols provide ____________ to the ______________ running on a computer.

List two protocols for each layer in the TCP model

APPLICATION

TRANSPORT

INTERNET

DATA-LINK + PHYSICAL

Transport layer protocols provide services to the application layer protocols that reside one layer ____________ in the TCP/IP model.

1. higher
2. lower

TCP/IP needs a mechanism to guarantee delivery of data across a network. To recover from errors, TCP uses the concept of _______________

1. salutes
2. handshakes
3. agreements
4. acknowledgements

__________, which refers to the concepts of how adjacent layers in a networking model, on the same computer, work together.

1. Same-layer interaction
2. adjacent-layer interaction
3. OSI layer
4. Routing

Name the four different switchport modes can be configured on a switch:

TRUE/FALSE: The switchport mode access and switchport mode trunk commands statically configure a switchport as an access or a trunking port, respectively.

TRUE/FALSE: The switchport mode dynamic desirable and switchport mode dynamic auto commands ARE NOT used to configure a switchport to dynamically form a trunk.

TRUE/FALSE: A switchport in desirable mode will actively attempt to form a trunk, whereas the auto mode will not form a trunk unless connected to another device that is configured as either dynamic desirable or as static trunk .

Refer to the exhibit and diagram; to make it possible for all traffic to pass between PC1’s LAN and PC2’s LAN, the link between SW1 and SW2 will be configured as a trunk. Which Cisco IOS command could be used on SW1’s Gi0/1 interface to force it to actively attempt to trunk with SW2?

• switchport trunk negotiate
• switchport mode dynamic auto
• switchport mode dynamic desirable
• switchport trunk auto

In this network, all switches are powered on, and all relevant VLANs have been configured correctly and are working. Based on the output in the exhibit, which of the following statements is true about switch SW2?

• Not enough information is provided to know which interfaces are trunking.
• No interfaces are currently trunking.
• Three interfaces are trunking.
• Only one interface is trunking.
• Two interfaces are trunking.

Which Cisco IOS command can be used to display which VLANs are supported over a specific configured switch trunk?

TRUE/FALSE: Both the show interfaces trunk and the show interfaces interface switchport commands CAN BE USED to display the VLANs that are allowed over a trunk.

Refer to the highlighted photo. What does the highlighted text mean?

Refer to the highlighted photo. What is a port channel?

Refer to the highlighted photo.

TRUE/FALSE: Both the passive and active modes allow LACP to negotiate between ports to determine if they can form a port channel, based on criteria such as the port speed and the trunking state.

Refer to the highlighted photo:

TRUE/FALSE: A port in active mode can form a port channel successfully with another port that is in active mode.

Refer to the highlighted photo:

TRUE/FALSE: A port in active mode can form a port channel with another port in passive mode.

Refer to the highlighted photo:

TRUE/FALSE

• A port in passive mode cannot form a port channel with another port that is also in passive mode, because neither port will initiate negotiation.
• A port in on mode is not running LACP.

Which Cisco IOS command can be used to display which VLANs are supported over a specific configured switch trunk?

Refer to the highlighted photo. What is LACP?

RSTP serves as an improved protocol in comparison to the older STP. Which of the following answers lists a feature of RSTP that does not exist in STP?

• The criteria used by a nonroot switch to choose its own root port
• The criteria used by switches to determine the designated port on a segment
• The criteria used by switches to determine a port to act in the backup port role
• The criteria used by switches to elect a root switch

TRUE/FALSE: RSTP uses the same rules as STP for choosing the root and choosing which ports serve as root port and designated port.

What is the default bridge priority on Cisco switches?

TRUE/FALSE: Both the show interfaces trunk and the show interfaces interface switchport commands can be used to display the VLANs that are allowed over a trunk.

For which reasons was the RFC 1918 address space defined?

• To reduce the Internet router’s routing table size
• To support the NAT protocol
• To preserve the public IPv6 address space
• To avoid/delay IPv4 address exhaustion

TRUE/FALSE: In the early 1990s, IANA could see issues with the current assignment of IPv4 addresses.

1) Routing information overload.

2) Eventual exhaustion of IP network numbers because of the quick growth of the Internet.

An engineer at Acme Corporation was tasked with the subnetting design for a new headquarters location. The only information she was given is shown here:

Use the 172.20.0.0/16 address space.

Plan for at least 400 different subnets of the same size.

Plan for each subnet to have at least 50 hosts per subnet.

How many subnet and host bits would be required?

• Subnet: 8, Host: 8
• Subnet: 11, Host: 5
• Subnet: 9, Host: 7
• Subnet: 10, Host: 6

To which subnet does host 192.168.148.76/29 belong?

**TROUBLESHOOTING LAYER 3**

TRUE OR FALSE:the portchannel interface must be configured with no switchport command, and so must the physical interfaces

A ping means that you have what kind of layer connectivity?

TRUE/FALSE: A ping fails does not mean that your devices are not connected

The number of routers that a packet has to go to in order to reach a destination is called what?

true/false: Access Control Lists filter traffic

TRUE/FALSE: A ping will not work on a switch

TRUE/FALSE: A ping on a switch will not work, because a switch is a layer 2 device

Name the protocol that provides a command line interface for communication with a remote device or server, sometimes employed for remote management but also for initial device setup like network hardware.

T/F: a router has the responsibility of finding out the best path for network traffic.

This type of protocol:

1. Learns routing info about IP subnets from neighboring routers
2. Advertises routing info about IP subnets from neighboring routers
3. If more than one possible route exists to reach one subnet, this protocol pics the best route based on a metric
4. Picks a route based on convergence

What does the letters in OSPF stand for?

What algorithm does OSPF to determin the best path?

What algoritm does EIGRP (Enhanced Interior Gateway Routing Protocol) use?

TRUE/FALSE: Routers discard data link headers and trailers as they forward IP packets.

Which two steps must you perform to enable router-on-a-stick on a router subinterface?

Fill in the blank: A ____________ static route is a method that is used to add a static route to the routing table should an existing better route disappear. This usually happens when the main routing protocol that is used is cut off from a spoke/branch. When the device sees that the routing protocol route has been removed from the routing table, it inserts the static route.

FILL IN THE BLANK: Although modern routers often have CSU/DSUs that are built into the card installed, external CSU/DSUs are still installed; in these circumstances, a ________________ is used to connect a router to the CSU/DSU.

What 3 troubleshooting tools can you use to help resolve a connectivity problem?

Which Cisco IOS command can be used on a router to view the different VLANs that have been configured into a ROAS configuration?

The __________________ command is very useful because it not only displays the different VLANs that have been configured on a router but also displays the interfaces or subinterfaces that are handling the traffic, which interface or subinterface is handling the native traffic, and some brief packet statistics.

The command _________________ will show the LSAs known by that router.

The___________, ________________, _______________, and _______________ commands are all valid commands that can assist in the verification and troubleshooting of OSPF, but they do not show the LSAs known to the router in OSPF.

Which OSPF command will display the OSPF network type that a specific interface uses?

Which Cisco IOS command can be used to disable the OSPF process temporarily?

Which Cisco command can be used to list details about the route that a router would match when processing a packet destined for the IPv6 address in the command ?

Validation of the right kind of hardware, using an 802.11 capable device is called ________-

What does the letters in WEP stand fopr and why is it used

Router R1 has the configuration shown in the exhibit. The only users allowed to telnet into R1 sit in the subnet connected to R1's Fa0/0 interface. Which of the following configuration commands, added to R1's configuration, would allow access to R1 for only those users, while allowing packets to flow through router R1?

• ip access-group 1 in, from inside interface configuration mode for Fast Ethernet 0/0
• ip access-group 9 in, from inside interface configuration mode for Fast Ethernet 0/0
• access-class 1 in, from inside vty configuration mode
• access-class 9 in, from inside vty configuration mode
• access-class 9 out, from inside vty configuration mode

Well known (system) ports are assigned by the Internet Assigned Numbers Authority (IANA) with a strict review process for new ports.

• Well known (system) ports range from 0 through _____.
• User (registered) ports range from _____ through _________.
• Ephemeral (dynamic, private) ports are unassigned ports that are intended to be dynamically allocated and temporarily used for client applications while the application is running. Ephemeral ports range from ____ through _____.

If you wanted to see the configured subnet mask value in prefix notation rather than in dotted decimal on a Linux system, which command(s) would you use?

The ____ command shows the subnet mask in dotted decimal format, while the ____ command shows the subnet mask in prefix notation, also referred to as “slash notation.”

The ____ command is used to show the local routing table on a Windows, macOS, and Linux device.The ________________ command is used to show the configured default gateway on a macOS

What VPN feature provides encryption and authentication services, but only for applications accessible from the user’s web browser?

What is a Secure Sockets Layer?

Which of the types of malware in the answers propagates automatically?

Web browsers connect to web servers by referencing the ____ of the web server.

Which of the following can be assigned to a host?

1. 214.122.127.76/26
2. 225.16.102.232/28
3. 0.102.62.1/24
4. 150.159.216.202/24
5. 12.150.146.96/27

What type of output is shown in the exhibit?

What congestion management solution was designed specifically for voice and video that has specialized low delay, jitter, and loss requirements?

____provides preferential treatment for this traffic over other class-based queuing methods so that regardless of the current congestion conditions the traffic is forwarded.

When comparing next-generation firewalls to traditional firewalls what additional capability can be leveraged to more efficiently block invalid application traffic?

For a particular NAT implementation, a private address 192.168.1.1 should always be translated with a 1:1 mapping to IP address 12.150.146.100. Which command accomplishes this?

• ip nat outside source static 192.168.1.1 12.150.146.100
• ip nat inside source static 192.168.1.1 12.150.146.100
• ip nat inside source list 1 pool outside
• ip nat inside source int s0 overload

Which part of the following URI is the hostname?

Refer to the diagram. PC1 sent out a DHCP discover message looking to find a DHCP server to obtain an address. What source IP address would R1 use for this message to R2?

• 0.0.0.0
• 255.255.255.255
• 192.168.1.1
• 192.168.2.1

The figure shows a design planned by a junior engineer. It shows the switches at three buildings in the same campus. The senior network engineer sends the junior engineer an e-mail, without reviewing the design, and asks the junior engineer to make sure to use a collapsed core design. What must the junior engineer do to change the design into a collapsed core design?

Refer to the diagram; as a network engineer, you are tasked with creating an ACL. The ACL must be configured on R1 and block traffic coming from PC1 on TCP port 1100 to S1, as well as block traffic coming from PC1 going to S1’s TCP port 80. Which configuration commands will successfully fulfill these requirements?

There are two Layer 3 switches acting as core routers called SW1 and SW2. SW1 and SW2 have the IP addresses 192.168.1.1 and 192.168.1.2 on VLAN 10, respectively. If host 1 has a configured default gateway of 192.168.1.1 and SW1 were to have a failure that brings the device offline, what protocol should be implemented to mitigate this failure scenario?

Where in the SDA fabric is the VXLAN tunneling performed?

In a three-tier design, what are the capabilities for the core devices?

What commands does TFTP support?

______ has very limited functionality compared to FTP because it was meant to be a lightweight protocol.

what is the SDA fabric device role to its current function:

Tracks all endpoints in the fabric site and associates the endpoints to fabric nodes. Uses LISP to do this

what is the SDA fabric device role to its current function:

The gateway between SDA and external networks

what is the SDA fabric device role to its current function:

Routes and transports IP traffic inside the fabric. Does not run VXLAN.

what is the SDA fabric device role to its current function:

Where endpoints register with the fabric.

What layer of a three-tier campus LAN topology provides a connection point for end-user devices?

what does a DHCP server do?

what is gratuitous arp?

what is a dynamic arp inspection

what is dhcp snooping

What is the proper major steps in order for PoE autonegotiation

What protocols utilizes the well-known port number 53?

What option(s) are required criteria for a service to be a cloud service?

Which of the following are true about TCP?

• This protocol is used by Telnet.
• This protocol supports multiplexing.
• This protocol provides a limited variety of services.
• This protocol is suited for important traffic such as Voice over IP (VoIP).

Which options are true about TACACS+?

• Uses ports 1645 and 1812
• Uses UDP
• Doesn’t encrypt the entire packet
• Uses port 49
• Encrypts the entire packet
• Uses TCP

The SDA underlay uses a well-known design called a routed access layer design. What are the features of a routed access layer design?

Which public cloud WAN connection options do not offer the ability to have reliable QoS?

• Ethernet VPN
• Internet
• Internet VPN
• Intercloud
• MPLS VPN

Select 2 answers

What is the field that is used on modern systems that allows an IP packet to be marked with a specific QoS value?

The configuration of a router uses default settings related to terminal monitor, and none of the users have changed their settings after login. User 1 connects to the console, user 2 connects via Telnet, and user 3 connects via SSH. User 3 issues debug ip ospf hello. Which user(s) sees the debug messages?

What is true in a spine-leaf architecture?

• Spine switches must be connected to each other
• Spine switches cannot connect to each other
• Leaf switches cannot connect to each other
• Leaf switches must be connected to each other

What is the name of the Cisco feature that allows for the identification of protocols that are traditionally hard to classify because of their operation?

Considering the differences between NAT and PAT, which is the most accurate description?

• NAT allows for multiple protocols across a single IP address.
• PAT allows for multiple protocols across multiple IP addresses.
• NAT translates many IP addresses into a few or even one IP address.
• PAT translates many IP addresses into a few or even one IP address.

Which of the following are true about VPNs?

• AnyConnect is an example of software that would be used in a site-to-site VPN solution.
• VPNs remove the need for users to manually log in to their computers each morning.
• SSL and IPsec are the same basic technology and are used for the same types of VPNs.
• IPsec provides authentication, data integrity, and confidentiality.
• Remote-access and site-to-site VPNs are often used as a less-expensive option to traditional WANs.

From the following options, what are the required REST API attributes?

• Peer-to-peer architecture
• Stateless operation
• Stateful operation
• Client/server architecture

Which public cloud WAN connection options do not offer the ability to easily migrate between providers?

• Internet VPN
• MPLS VPN
• Internet
• Ethernet VPN
• Intercloud

Port Address Translation (PAT) is also known as what?

AAA refers to Authentication, Authorization and Accounting. What two protocols does it use?

What is Cisco TACACS?

Is RADIUS TCP or UDP?

Port 53 is used by?

Port 69 is used by?

Does DNS use TCP or UDP

List the Cisco Syslog Severity Levels in order.