Term
| Which statement about DTP is true? |
|
Definition
| Sends data on vlan 1. Controls like CDP, DTP, PAgP and VTP uses VLAN 1 even if you change the native vlan. |
|
|
Term
| How can you disable DTP on a switch port? |
|
Definition
| Configure the switch as a trunk. The only way to disable DTP is "switchport nonegotiage" but that cannot be configured until the port is a trunk. |
|
|
Term
Normal VLAN ID range?
Where are they stored? |
|
Definition
1-1005
1002 - 1005 are reserved
Stored in flash:/vlan.dat |
|
|
Term
| What are three statements about DTP? |
|
Definition
Enabled by default
Proprietary
Layer-2 based |
|
|
Term
| What is DTP's default mode in a switch? |
|
Definition
|
|
Term
| Which two circumstances can cause collision domain issues on a VLAN domain? |
|
Definition
duplex mismatches
congestion on the switch inbound path |
|
|
Term
| Which three statements are typical characteristics of VLAN arrangements? |
|
Definition
Connectivity between VLANs requires a layer 3 device.
Each vlan uses separate address space
A switch maintains a separate bridging table for each vlan. |
|
|
Term
| What are 3 valid reasons to assign ports to VLAN's on a switch? |
|
Definition
To isolate broadcast traffic
To logically group hosts according to function.
To increase network security |
|
|
Term
| Which statement about switch access ports is true? |
|
Definition
| They drop packets with 802.1q tags. |
|
|
Term
| What are the switchport desired states for Access, Dynamic Auto, Trunk, Dynamic Desireable? |
|
Definition
|
|
Term
| Which three options are types of slow Vlan connectivity? |
|
Definition
Slow broadcast domain connectivity.
Slow collision domain connectivity.
Slow inter Vlan connectivity.
The answers seem to relate to layer two connectivity except inter vlan. |
|
|
Term
| Which three statements regarding 802.1q trunking are correct? |
|
Definition
802.1q native vlan frames are untagged by defualt.
Can use 10 mb/s interfaces
Should have native vlans that are the same at both ends. |
|
|
Term
| Which three statements about VTP features are true? |
|
Definition
When properly configured, VTP minimizes VLAN misconfiguration and config inconsistiences.
VTP pruning is used to increase bandwidth in trunk links.
Client, server, and transparent are valid VTP modes. |
|
|
Term
| What is one benefit of PVST+? |
|
Definition
| PVST+ allows the root switch location to be optimized per vlan. |
|
|
Term
| If primary and secondary root switches with priority 16384 both experience catastrophic losses which tertiary switch can take over? |
|
Definition
| A switch with priority 20480. It isnt a switch with a priority lower than 16384 cause it would have already been the primary. |
|
|
Term
| Which factors generate bridge ID? |
|
Definition
MAC address and Bridge Priority.
Bridge ID = Bridge priority + MAC Address |
|
|
Term
| Which process is associated with Spanning-tree convergance? |
|
Definition
| Electing designated ports. |
|
|
Term
| Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding states? |
|
Definition
|
|
Term
| What kind of data message is sent to elect the root bridge? |
|
Definition
|
|
Term
| Which type does a port become when it receives the best BPDU on a bridge? |
|
Definition
|
|
Term
| Which value can you modify to configure a specific interface as the preferred forwarding interface? |
|
Definition
|
|
Term
| Which vlan bridge priority value is assigned by the command "set spantree root"? |
|
Definition
|
|
Term
| Which two statements about the spanning-tree bridge ID are true? |
|
Definition
It is composed of a 4bit priority and 12 bit system ID extension.
The bridge priority must be incremented in blocks of 4096. |
|
|
Term
| At which layer of the OSI model is RSTP used to prevent loops? |
|
Definition
|
|
Term
| Which three statements about RSTP are true? |
|
Definition
RSTP significantly reduces topology reconvening time after a link failure.
RSTP expands the STP port roles by adding the alternate and backup roles.
RSTP provides a faster transition to the forwarding state on point to point links than STP |
|
|
Term
| Which three states are valid for 802.1w? |
|
Definition
Learning
Discarding
Forwarding |
|
|
Term
|
Definition
| Rapid Spanning Tree Protocol |
|
|
Term
| Which two statements regarding RSTP are correct? |
|
Definition
RSTP defines new port roles.
RSTP is compatible with the original IEEE 802.1d STP |
|
|
Term
| Which two states are the port states when RSTP has converged? |
|
Definition
|
|
Term
| Explain the Spanning Tree election process? |
|
Definition
Step 1. Election of root bridge. Bridge with lowest BID wins. If tie then lowest MAC.
Step 2. Each non-root switch chooses its one and only path to the root switch. This is determined by path costs. |
|
|
Term
| What are the default IEEE switchport bandwidth cost? |
|
Definition
10Mbps = 100
100Mbps = 19
1 Gbps = 4
10 Gbps = 2 |
|
|
Term
| What two modes are available for PAgP etherchannel? |
|
Definition
|
|
Term
| What two modes are available for LACP etherchannel? |
|
Definition
|
|
Term
| Which statement about slow inter VLAN forwarding is true? |
|
Definition
The VLANs are experiencing slowness due to a duplex mismatch.
The causes of slow interVlan are usually duplex mismatch or collision domain issues. |
|
|
Term
|
Definition
| High Level Data Link Control is encapsulation applied to an IP packet to send the packet over a WAN link. |
|
|
Term
| Which WAN technology uses labels to make decisions about data forwarding? |
|
Definition
|
|
Term
| Which WAN solution is secured by default? |
|
Definition
|
|
Term
| Which WAN topology provides a direct connection from each site to all other sites on the network? |
|
Definition
|
|
Term
| After you configure a GRE tunnel between two networks the tunnel comes up but computers cannot communicate across the tunnel? |
|
Definition
| The route between the networks is undefined. |
|
|
Term
| What is the default encapsulation type for Cisco WAN serial interfaces? |
|
Definition
|
|
Term
| Which feature does PPP use to encapsulate multiple protocols? |
|
Definition
| NCP Network Control Protocols. |
|
|
Term
| Which two statements about using CHAP authentication in a PPP link are true? |
|
Definition
CHAP uses a three-way handshake.
CHAP authentication periodically occurs after link establishment. |
|
|
Term
| What is the purpose of LCP? |
|
Definition
| To negotiate control options. |
|
|
Term
| What command is used to enable CHAP with PAP as the fallback method on a serial interface |
|
Definition
| ppp authentication chap fallback ppp |
|
|
Term
| What are three reasons an organization with multiple branch offices with roaming users might implement a VPN solution instead of a point to point WAN. |
|
Definition
Reduced Cost
Increased Security
Scalability |
|
|
Term
| Which later 2 protocol encapsulation supports synchronous and asynchronous circuits and has built-in security mechanisms? |
|
Definition
|
|
Term
| Which PPP subprotocol negotiates authentication options? |
|
Definition
| LCP Link Control Protocol |
|
|
Term
| At which layer of the OSI model does PPP perform? |
|
Definition
|
|
Term
| Which type of interface can negotiate an IP address for a PPPoE client? |
|
Definition
|
|
Term
| Which part of the PPPoE server configuration contains the information used to assign an IP address to a PPPoE client? |
|
Definition
| virtual-template interface |
|
|
Term
| Which command do you enter to enable an interface to support PPPoE on a client? |
|
Definition
|
|
Term
| Which type of topology is required by DMVPN? |
|
Definition
|
|
Term
| Which statement about MPLS is true? |
|
Definition
| It operates between layer 2 and layer 3. MPLS operates at a layer that lies between traditional definitions of Layer 2 and Layer 3 and thus is often referred to as a layer 2.5 protocol. |
|
|
Term
| 3 true statements about HSRP operation? |
|
Definition
Virtual IP address and virtual MAC are active on the HSRP Master router.
HSRP default timers are 3 second hello and 10 second dead interval.
HSRP supports up to 255 groups per interface. |
|
|
Term
| What is a valid HSRP virtual MAC address? |
|
Definition
0000.0C07.AC15
HSRP v1 = 0000.0c07.ACxx xx is HSRP group
HSRP v2 = 0000.0C9F.Fxxx xxx is HSRP group |
|
|
Term
| Which three options are the HSRP states for a router? Choose three |
|
Definition
Learn, Listen, Speak
HSRP consist of 6 states: Initial, learn, Listen, Speak, Standby, Active |
|
|
Term
| What about HSRP Ip address is true? |
|
Definition
| Acts as default route for that interface. |
|
|
Term
| Which of the following HSRP router states does an active router enter when it is preempted by a higher priority router? |
|
Definition
Speak
The router sends periodic HSRP hellos and participates in the election of the active or standby router. |
|
|
Term
| Which protocol specfified by RFC 2281 provides network redundancy for IP networks? |
|
Definition
|
|
Term
| Which option is the benefit of implementing an intelligent DNS for a cloud computing solution? |
|
Definition
| It can redirect user requests to locations that are using fewer network resources. |
|
|
Term
| Which statement about QoS default behavior is true? |
|
Definition
Ports are untrusted by default.
By default all ports are in the untrusted state when QoS is enabled. |
|
|
Term
| Which option describes the purpose of traffic policing? |
|
Definition
| It drops traffic that exceeds the CIR |
|
|
Term
| Which option is a benefit of switch stacking? |
|
Definition
| It provides higher port density with better resource usage. |
|
|
Term
| Which parameter would you tune to affect the selection of a static route as a backup, when a dynamic protocol is also being used? |
|
Definition
|
|
Term
| Which statement is true, as relates to classful or classless routing? |
|
Definition
| Automatic summarization at classful boundaries can cause problems on discontigous networks. |
|
|
Term
| Which two are advantages of static routing when compared to dynamic routing? |
|
Definition
Security increases because only the network admin may change the table.
Routing traffic load is reduced when used in a stub network links. |
|
|
Term
| How does a router handle an incoming packet whose destination network is missing from the routing table? |
|
Definition
|
|
Term
| What are two drawbacks of implementing a link-state routing protocol? |
|
Definition
Requirement for a hierarchical Ip addressing scheme for optimal function.
The high demand on router resources to run the link-state routing algorithm. |
|
|
Term
| Which two statements describe the identifier that is used in the command to configure OSPF on a router? |
|
Definition
Different process identifiers can be used to run multiple OSPF processes.
The process numbers range from 1 to 65,535 |
|
|
Term
| What are three characteristics of OSPF? |
|
Definition
Converges quickly.
Uses cost to determine the best route.
OSPF routers discover neighbors before exchanging routing information. |
|
|
Term
| Which two statements about the OSPR router ID are true? |
|
Definition
Identifies the source of Type 1 LSA.
The router automatically chooses the IP addresss of a loopback as the OSPF router ID |
|
|
Term
| What are two enhancements that ospfv3 supports over ospfv2 |
|
Definition
Support multiple IPv6 subnets on a single link.
It routes over links rather than over networks. |
|
|
Term
| What are OSPF default hello and dead timers? |
|
Definition
Hello timer is 10 seconds
Dead timer is 40 seconds. |
|
|
Term
| In order to become OSPF neighbors the following values must match on both routers. |
|
Definition
Area ID
Authentication
Hello and Dead Intervals
Stub Flag
MTU size |
|
|
Term
| What OSPF command when configured will include all interfaces into area 0? |
|
Definition
| network 0.0.0.0 255.255.255.255 area 0 |
|
|
Term
| What are two benefits of using a single OSPF are network design? |
|
Definition
Reduces the types of LSAs that are generated.
Removes the need for virtual links. |
|
|
Term
| What can cause two OSPF neighbors to be stuck in EXSTART state? |
|
Definition
| The neighbors have different MTU settings. |
|
|
Term
| Which parameter or parameters are used to calculate OSPF cost in Cisco Routers? |
|
Definition
Bandwidth
Formula is Cost=10 to power of 8 / Bandwidth |
|
|
Term
| What is the default maximum number of equal-cost paths that can be placed into the routing of a Cisco OSPF router? |
|
Definition
|
|
Term
| What information does a router running a link-state protocol use to build and maintain its topological database? |
|
Definition
Hello Packets
LSAs from other routers |
|
|
Term
| What is the default administrative distance of OSPF? |
|
Definition
|
|
Term
| List the default administrative distances of Direct Connect, Static, EIGRP, EIGRP Summary Route, OSPF, RIP. |
|
Definition
Direct = 0
Static = 1
EIGRP = 90
EIGRP Summary = 5
OSPF = 110
RIP = 120 |
|
|
Term
| When a router undergoes the exchange protocol within OSPF, in what order does it pass through each state? |
|
Definition
| Exstart state > exchange state > loading state > full state |
|
|
Term
| Which command is used to display the collection of OSPF link states? |
|
Definition
|
|
Term
| Which statement describes the process ID that is used to run OSPF on a router? |
|
Definition
| It is locally significant and is used to identify an instance of the OSPF database? |
|
|
Term
| What is the default values for hello and dead packets in OSPF? |
|
Definition
|
|
Term
| Which purpose of the network command in OSPF configuration mode is true? |
|
Definition
| It defines a wildcard mask to identify the size of the network. |
|
|
Term
| Which EIGRP for IPv6 command can you enter to view the link-local addresses of the neighbors of a device? |
|
Definition
| show ipv6 eigrp neighbors |
|
|
Term
| Which option describes a difference between EIGRP for IPv4 and IPv6? |
|
Definition
| Only EIGRP for IPv6 requires a router ID to be configured under the routing process |
|
|
Term
| Which type of EIGRP route entry describes a feasible successor? |
|
Definition
| a BACKUP route, stored in the TOPOLOGY table. |
|
|
Term
| What are the two default metrics used by EIGRP for route selection? |
|
Definition
|
|
Term
| What does a router do if it has no EIGRP feasible successor route to a destination network and the successor route to that destination network is in an active state? |
|
Definition
| It sends a multicast query packet to all adjacent neighbors requesting available routing paths to the destination network. |
|
|
Term
| Which statement describes an EIGRP feasible successor route? |
|
Definition
| A backup route, added to the topology table. |
|
|
Term
| A network administrator is troubleshooting an EIGRP problem on a router to confirm the IP addresses of the devices with which the router has established adjacency. The retransmit interval and the queue counts for the adjacent routers also need to be checked. |
|
Definition
|
|
Term
| Which routing protocols are compatible with stubs? |
|
Definition
|
|
Term
| Which three checks must you perform when troubleshooting EIGRPv6 adjacencies? |
|
Definition
Verify that IPv6 is enabled
Verify that the interface is up
Verify that the router ID has been configured. |
|
|
Term
| Which command do you enter to view EIGRPv6 adjacencies |
|
Definition
| show ipv6 eigrp neighbors |
|
|
Term
| Which two components are used to identify a neighbor in a BGP configuration? |
|
Definition
Autonomous System Number
IP Address |
|
|
Term
| Which two statements about the IP SLAs ICMP Echo operation is true? |
|
Definition
It is used to determine the frequency of ICMP packets.
It is used to determine the one-way delay between devices. |
|
|
Term
|
Definition
|
|
Term
| Which protocol authenticates connected devices before allowing them to access the lan? |
|
Definition
|
|
Term
| What is the difference between TACACS+ and RADIUS in AAA? |
|
Definition
| Only TACACS+ allows for seperate authentication. |
|
|
Term
| What can be done to secure the virtual terminal interfaces on a router? |
|
Definition
Configure a vty password and login
Enter an access list and apply it to the virtual terminal interfaces using the access-class command. |
|
|
Term
| Which protocol is an open standard protocol framework that is commonly used in VPNs to provide secure end to end communication? |
|
Definition
|
|
Term
| Which IPsec security protocol should be used when confidentiality is required? |
|
Definition
|
|
Term
| Which three options are types of Layer 2 network attack? |
|
Definition
ARP attacks
spoofing attacks
VLAN hopping |
|
|
Term
| Which option describes a drawback of proxy ARP? |
|
Definition
| If proxy ARP is configured on multiple devices, the internal L2 network may become vulnerable to DDOS |
|
|
Term
| Which type of attack is when trusted source replace MAC tables with untrusted? |
|
Definition
|
|
Term
| Which three response does TACAS+ give while querying ... something like that. |
|
Definition
|
|
Term
| Which feature can validate address requests and filter out invalid messages? |
|
Definition
|
|
Term
| A network admin needs to configure port security on a switch. Which two statements are true? |
|
Definition
The sticky learning feature allows the addition of dynamically learned addresses to the running configuration.
When dynamic mac address learning is enabled on an interface, the switch can learn new addresses up to the maximum defined |
|
|
Term
| Which version of SNMP first allowed user-based access? |
|
Definition
|
|
Term
| What is the first step you perform to configure an SNMPv3 user? |
|
Definition
| Configure the server group. |
|
|
Term
| Which feature can you use to restrict SNMP queries to a specific OID tree? |
|
Definition
|
|
Term
| What is the minimum command to turn on encryption on SNMP? |
|
Definition
|
|
Term
| Which feature can you use to monitor traffic on a switch by replicating it to another port or ports on the same switch? |
|
Definition
|
|
Term
| If you configure syslog messages without specifying the logging trap level, which log messages will the router send? |
|
Definition
| All levels except debugging |
|
|
Term
| What is the default read-only mode of SNMP community string? |
|
Definition
|
|
Term
| What is the output of the command "show snmp engineID" |
|
Definition
| Local SNMP engineID and remote engine ID |
|
|
Term
| Which protocol HSRP uses to interchange? |
|
Definition
|
|
Term
| When does your enterprise require high-speed broadband internet? |
|
Definition
|
|
Term
| What protocol CGMP is not compatible with? |
|
Definition
|
|
Term
| What about GRE tunnel is true? |
|
Definition
|
|
Term
| Which algorithm routing protocols are using? |
|
Definition
Dijkstra -> OSPF
Bellman-Ford > RIP
Dual > EIGRP |
|
|
Term
| Which command is used to remove vlans from the trunk? |
|
Definition
| sw trunk allowed vlan remove |
|
|
Term
| Which of the following provide the highest availability? |
|
Definition
|
|
Term
|
Definition
|
|
Term
| Which feature can prevent switch to become Root Bridge? |
|
Definition
|
|
Term
| Which is correct about APIC-EM path trace ACL? |
|
Definition
| It checks ingress and egress interfaces |
|
|
Term
| If trap in SNMP is not working, where can be issue? |
|
Definition
wasn't put in the command
snmp-server enable traps |
|
|
Term
| What is the default DTP mode? |
|
Definition
|
|
Term
| Which command is used to check to see if trunkport is enabled on an interface? |
|
Definition
|
|
Term
| What prevents DDOS attack? |
|
Definition
|
|
Term
| Why can the security of RADIUS be comp |
|
Definition
|
|
Term
| Which layer is ACL APIC-EM Path running on? |
|
Definition
|
|
Term
| What is Application Policy Infrastructure Controller? |
|
Definition
APIC
Ciscos centralized Application Policy Infrastructure Controller. |
|
|
Term
|
Definition
| Application Policy Infrastructure Controller Enterprise Module |
|
|
Term
| Which two options describe benefits of aggregated chassis technology? |
|
Definition
It reduces management overhead.
It requires only one IP address per vlan |
|
|
Term
| What routing protocol uses first-hand information? |
|
Definition
|
|
Term
| Which command can you enter on a switch to determine the current SNMP security model? |
|
Definition
|
|
Term
| What two options are causes of network slowness that can result from inter-VLAN routing problem? |
|
Definition
Packet Loss
Hardware Forwarding Issues |
|
|
Term
| Which two commands debug a PPPoE connection that has failed to establish? |
|
Definition
debug ppp negotiation
debug dialer packet |
|
|
Term
| Which command do you enter to determing whether LACP is in use on a device? |
|
Definition
| show etherchannel summary |
|
|
Term
| Which three commands do you use to verify that IPsec over a GRE tunnel is working properly? |
|
Definition
show crypto ipsec sa
show crypto isakmp sa
debug crypto isakmp |
|
|
Term
| Which two types of cloud services may require you to alter the design of your network infrastructure? |
|
Definition
Platform as a service
Infrastructure as a Service |
|
|
Term
| Which encryption method does CHAP authentication use for the peer response? |
|
Definition
|
|
Term
| Which layer 2 attack is specifically mitigated by changing the native VLAN to an unused VLAN? |
|
Definition
|
|
Term
| What feature or value must be configured to enable EIGRPv6? |
|
Definition
|
|
Term
| Which command do you enter to enable local authentication for MPPP on an interface? |
|
Definition
| ppp chap password password1 |
|
|
Term
| What options are the two differences between HSRPv1 and V2? |
|
Definition
Only HSRPv2 can be configured with a group number of 4095.
Only HSRPv2 send hello to 224.0.0.102 |
|
|
Term
| For which reason can a GRE tunnel have an up/down status? |
|
Definition
| A tunnel destination in undefined |
|
|
Term
| Which utility do you use to view IP traffic that is switched through the router to locate errors in a TCP stream? |
|
Definition
|
|
Term
| Which command do you enter so that a port enters an immediate forwarding state? |
|
Definition
| spanning-tree portfast default |
|
|
Term
| Which term represents the minimum bandwidth provided in a metro ethernet connection? |
|
Definition
| CIR Committed Information Rate |
|
|
Term
| Which three effects of using local span are true? |
|
Definition
It doubles the load on the forwarding engine.
It prevents span destination from using port security.
It double internal switch traffic |
|
|
Term
| Which tree fields can be marked with QOS? |
|
Definition
Ip precedence
DSCP
discard class |
|
|
Term
| Which two values are needed to run the APIC-EM ACL analysis tool? |
|
Definition
Source Address
Destination Address |
|
|
Term
| In which two models can control plane functionality be implemented? |
|
Definition
|
|
Term
| Which PPPoE authentication method is the lest secure? |
|
Definition
|
|
Term
| Which two QoS tools can provide congestion management? |
|
Definition
CBWFQ Class Based Weighted Fair Queueing
PQ Priority Queueing |
|
|
Term
|
Definition
|
|
Term
| Which LACP mode sends offer to connect device? |
|
Definition
|
|
Term
| Which IPv6 ACL rules are applied as first? |
|
Definition
|
|
Term
|
Definition
OpenSent: wait for an OPEN message
OpenConfirm: wait for a KEEPALIVE or NOTIFICATION message
Established: UPDATE, NOTIFICATION and KEEPALIVE messages are exchanged with peers
Idle: refuse connections
Active: listen for and accept connection
Connect: wait for the connection to be completed |
|
|
Term
| Three HSRP multicast messages are sent between the devices? |
|
Definition
|
|
Term
| How will HSRP choose the active router? |
|
Definition
Highest IP
Configured Priority |
|
|
Term
| What is the results or a saturated tunnel? |
|
Definition
|
|
Term
| Which utility can you use to identify redundant or shadow rules? |
|
Definition
| The ACL analysis tool in Cisco APIC-EM |
|
|
Term
| How can QoS be implemented? |
|
Definition
|
|
Term
| What do you need to reduce GRE fragmentation? |
|
Definition
|
|
Term
| When you use cloud services which service is more "exposed" to the cloud? |
|
Definition
|
|
Term
| Question about Dynamic VPN? |
|
Definition
It allows dynamic addressing
It does not need additional configuration on the hub for new spokes.
It allows partial mesh topology |
|
|
Term
| What are the differences between link state vs vector routing protocols? |
|
Definition
Link state protocols are faster than vector routing protocols.
Link state protocols take up more memory than vector routing protocols |
|
|
Term
| Which two options are well-known southbound APIs? |
|
Definition
|
|
Term
| Which two functions of an SDN controller are true? |
|
Definition
Managing the controller
Coordinating VTNs |
|
|
Term
| Which event triggers a switch stack election? |
|
Definition
| Adding a new powered-on standalone switch to the stack. |
|
|
Term
| What can be used to modify ToS field in IPv4 and traffic class on IPv6 headers? |
|
Definition
|
|
Term
| Which routing protocols are compatible with stubs? |
|
Definition
|
|
Term
| DHCP can be prevented by which protocol? |
|
Definition
|
|
Term
| Which protocol is incompatible with CGMP leave processing? |
|
Definition
|
|
Term
| Which three features are supported when you use TACACS+ for device management? |
|
Definition
It can restrict the commands that individual users are allowed to execute.
It can provide additional challenges beyond the username and password.
It supports user notifications. |
|
|
Term
| Which configuration item is the default username for PPP local authentiation? |
|
Definition
|
|
Term
| Which technology can identify and classify mission-critical applications for path selection? |
|
Definition
|
|
Term
| Which type of routing protocol is used to exchange routes between different autonomous systems? |
|
Definition
|
|
