extra cisco

Which subnet mask would be used as the classful mask for the IP address 128.107.52.27?

255.255.0.0*

Which subnet mask would be used as the classful mask for the IP address 192.135.250.27?

255.255.255.0*

Refer to the exhibit. The Branch Router has an OSPF neighbor relationship with the HQ router over the 198.51.0.4/30 network. The 198.51.0.8/30 network link should serve as a backup when the OSPF link goes down. The floating static route command ip route 0.0.0.0 0.0.0.0 S0/1/1 100 was issued on Branch and now traffic is using the backup link even when the OSPF link is up and functioning. Which change should be made to the static route command so that traffic will only use the OSPF link when it is up?

Change the administrative distance to 120.*

A standard ACL has been configured on a router to allow only clients from the 10.11.110.0/24 network to telnet or to ssh to the VTY lines of the router. Which command will correctly apply this ACL?

access-group 11 in*

The computers used by the network administrators for a school are on the 10.7.0.0/27 network. Which two commands are needed at a minimum to apply an ACL that will ensure that only devices that are used by the network administrators will be allowed Telnet access to the routers? (Choose two.)

access-list 5 permit 10.7.0.0 0.0.0.31* -access-class 5 in*

Which value represents the "trustworthiness" of a route and is used to determine which route to install into the routing table when there are multiple routes toward the same destination?

administrative distance*

A new network policy requires an ACL to deny HTTP access from all guests to a web server at the main office. All guests use addressing from the IPv6 subnet 2001:DB8:19:C::/64. The web server is configured with the address 2001:DB8:19:A::105/64. Implementing the NoWeb ACL on the interface for the guest LAN requires which three commands? (Choose three.)

deny tcp any host 2001:DB8:19:A::105 eq 80* permit ipv6 any any*

Which three pairs of trunking modes will establish a functional trunk link between two Cisco switches? (Choose three.)

dynamic desirable - dynamic auto* dynamic desirable - dynamic desirable* dynamic desirable - trunk*

The OSPF Type 1 packet is the _________ packet.

hello

Static routes are configured by the use of the global configuration command.

ip route

Refer to the exhibit. If the switch reboots and all routers have to re-establish OSPF adjacencies, which routers will become the new DR and BDR?

Router R4 will become the DR and router R3 will become the BDR.*

Refer to the exhibit. An attacker on PC X sends a frame with two 802.1Q tags on it, one for VLAN 40 and another for VLAN 12. What will happen to this frame?

SW-A will remove both tags and forward the rest of the frame across the trunk link, where SW-B will forward the frame to hosts on VLAN 40.*

Which statement is true about the difference between OSPFv2 and OSPFv3?

OSPFv3 routers do not need to have matching subnets to form neighbor adjacencies.*

What is the purpose of an access list that is created as part of configuring IP address translation?

The access list defines the private IP addresses that are to be translated.*

While analyzing log files, a network administrator notices reoccurring native VLAN mismatches. What is the effect of these reoccurring errors?

The control and management traffic on the error-occurring trunk port is being misdirected or dropped.*

Which two characteristics describe the native VLAN? (Choose two.)

The native VLAN provides a common identifier to both ends of a trunk.* The native VLAN traffic will be untagged across the trunk link.*

A network technician is configuring port security on switches. The interfaces on the switches are configured in such a way that when a violation occurs, packets with unknown source address are dropped and no notification is sent. Which violation mode is configured on the interfaces?

protect*

An OSPF router has three directly connected networks; 172.16.0.0/16, 172.16.1.0/16, and 172.16.2.0/16. Which OSPF network command would advertise only the 172.16.1.0 network to neighbors?

router(config-router)# network 172.16.1.0 0.0.255.255 area 0*

The default administrative distance for a static route is .

1

What are two ways of turning off DTP on a trunk link between switches? (Choose two.)

Configure attached switch ports with the nonegotiate command option.* Place the two attached switch ports in access mode.*

The buffers for packet processing and the running configuration file are temporarily stored in which type of router memory?

RAM*

Why would an administrator use a network security auditing tool to flood the switch MAC address table with fictitious MAC addresses?

to determine which ports are not correctly configured to prevent MAC address flooding*