Network Essentials exam version A 25B

Which three statements describe ACL processing of packets?

-An implicit deny any rejects any packet that does not match any ACE. -A packet can either be rejected or forwarded as directed by the ACE that is matched. -Each statement is checked only until a match is detected or until the end of the ACE list.

Which two pieces of information are in the RAM of a Cisco router during normal operation?

-IP routing table -Cisco IOS

Which two statements are true regarding switch port security?

-If fewer than the maximum number of MAC addresses for a port are configured statically, dynamically learned addresses are added to CAM until the maximum number is reached. -Dynamically learned secure MAC addresses are lost when the switch reboots.

What are two common types of static routes in routing tables?

-a default static route -a static route to a specific network

What network address and subnet mask combination would be used to create a default static route that matches any IPv4 destination?

0.0.0.0 0.0.0.0

Which wildcard mask would be used to advertise the 192.168.5.96/27 network as part of an OSPF configuration?

0.0.0.31

What are three characteristics of an SVI?

1. It is not associated with any physical interface on a switch. 2. It provides a means to remotely manage a switch. 3. It is associated with VLAN1 by default.

Match the Numbers with the features of the shielded twisted pair cable. Braided or Foil shield Foil shields Outer Jacket Twisted Pairs

1. Outer Jacket 2. Braided or Foil shield 3. Foil shields 4. Twisted Pairs

What is the Max Length of the Shielded twisted pair cable?

100m

What is the administrative distance of OSPF?

110

The address pool of a DHCP server is configured with 172.18.93.0/25. The network administrator reserves 10 IP addresses for web servers. How many IP addresses are left in the pool to be assigned to other hosts?

116

Refer to the exhibit. Which address or addresses represent the inside global address? Router1(config)# ip nat inside source static 192.168.0.100 209.165.20.25 Router1(config)# interface serial0/0/0 Router1(config-if)# ip nat inside Router1(config-if)# ip address 10.1.1.2 255.255.255.0 Router1(config)# interface serial 0/0/2 Router1(config-if)# ip address 209.165.20.25 255

209.165.20.25

A high school uses VLAN15 for the laboratory network and VLAN30 for the faculty network. What is required to enable communication between these two VLANs while using the router- on-a-stick approach?

A switch with a port that is configured as a trunk is needed when connecting to the router

Match the subnet mask with the correct wildcard mask. A. 255.255.255.0 B. 255.255.192.0 C. 255.255.255.252 D. 255.255.224.0

A. 0.0.0.255 B. 0.0.63.255 C. 0.0.0.3 D. 0.0.31.255

what are the port numbers for these packets? A. packets with destination of 172.17.10.5 B. packets with destination of 172.17.12.10 C. packets with destination of 172.17.14.8 D. packets with destination of 172.17.8.20 E. packets with destination of 172.17.6.15

A. FastEthernet 1/1 B. FastEthernet 1/0 C. FastEthernet 0/1 D. Serial 0/0/0 E. FastEthernet 0/0

Match each DHCP message type with its description DHCP ACK HCP REQUES DHCP DISCOVER OFFER

DHCP ACK- The DHCP server confirming that the address lease has been accepted D HCP REQUEST- The client accepting the IP address provided by the DHCP server DHCP DISCOVER- A client initiating a message to find a DHCP server DHCP OFFER- A DHCP server responding to the initial request by a client

Which message does an IPv4 host use to reply when it receives a DHCPOFFER message from a DHCP server?

DHCP REQUEST

What command is used to advertise the default route via OSPFv2?

Default-information originate

Which Fiber-Optic connector is this? *PICTURE*

Duplex Multimode LC Connectors

What is the effect of using the switchport port- security command?

Enables port security on an interface

True Or False? Single Mode Fiber has a larger core than Multi mode Fiber

False

True or false? Multi mode Fiber uses Lasers as the light source?

False

True or false? This is the correct standard for the T568B pinout *picture* G/ G O/ B B/ O BR/ BR

False

When data is encoded as pulses of light, which media is being used to transmit the data?

Fiber-Optic Cable

An administrator who is troubleshooting connectivity issues on a switch notices that a switch port configured for port security is in the err-disabled state. After verifying the cause of the violation, how should the administrator re-enable the port without disrupting network operation?

Issue the shutdown command followed by the no shutdown command on the interface

What are two benefits of NAT?

It saves public IP addresses. It adds a degree of privacy and security to a network.

Match the following: Latency Throughput Goodput

Latency: Amount of time, including delays, for data to travel from one given point to another Throughput: The measure of the transfer of bits across the media over a given period of time Goodput: The measure of usable data transferred over a given period of time

Which distinct type of VLAN is used by an administrator to access and configure a switch?

Management VLAN

An IT security specialist enables port security on a switch port of a Cisco switch. What is the default violation mode in use until the switch port is configured to use a different violation mode?

shutdown

Which characteristic describes crosstalk?

the distortion of the transmitted messages from signals carried in adjacent wires

What is the purpose of the startup configuration file on a Cisco router?

to contain the commands that are used to initially configure a router on startup

Refer to the exhibit. A technician is configuring R2 for static NAT to allow the client to access the web server. What is a possible reason that the client PC cannot access the web server?

Interface S0/0/0 should be identified as the outside NAT interface

When would it be more beneficial to use a dynamic routing protocol instead of static routing?

On a network where there is a lot of topology changes

On which router should the show access-lists command be executed?

On the router that has the ACL configured

Refer to the exhibit. If the network administrator created a standard ACL that allows only devices that connect to the R2 G0/0 network access to the devices on the R1 G0/1 interface, how should the ACL be applied?

Outbound on the R1 G0/1 interface

Port Fa0/11 on a switch is assigned to VLAN 30. If the command no switchport access vlan 30 is entered on the Fa0/11 interface, what will happen?

Port Fa0/11 will be returned to VLAN 1

Which of the following is a valid Single-Area OSPFv2 configuration?

R1 (config) #router ospf 10 R1 (config-router) #router-id 1.1.1.1 R1 (config-router) #network 192.168.1.0 0.0.0.255 area 0 R1 (config-router) #network 192.168.2.0 0.0.0.3 area 0

A technician configures a switch with these commands: SwitchA(config)# interface vlan 1 SwitchA(config-if)# ip address 192.168.1.1 255.255.255.0 SwitchA(config-if)# no shutdown What is the technician configuring?

SVI

Which address is required in the command syntax of a standard ACL?

Source IP address

Which fiber-optic connector is this? *picture*

Subscriber Connector (SC) Connectors

Allan contacts the ISP complaining of issues connecting to the internet. He is unsure of the problem. The ISP sends a new preconfigured modem to Allan in hopes that it solves the situation. Which structured troubleshooting method is the ISP using?

Substitution

Refer to the exhibit. The Fa0/2 interface on switch S1 has been configured with the switchport port-security mac-address 0023.189d.6456 command and a workstation has been connected. What could be the reason that the Fa0/2 interface is shutdown?

The MAC address of PC1 that connects to the Fa0/2 interface is not the configured MAC address

What is one indication that a Windows computer did not receive an IPv4 address from a DHCP server?

The computer receives an IP address that starts with 169.254

Refer to the exhibit. A router-on-a-stick configuration was implemented for VLANS 15, 30, and 45, according to the show running-config command output. PCs on VLAN 45 that are using the 172.16.45.0 /24 network are having trouble connecting to PCs on VLAN 30 in the 172.16.30.0 /24 network. Which error is most likely causing this problem?

There is an incorrect IP address configured on GigabitEthernet 0/0.30

What is a disadvantage of using dynamic routing protocols?

They send messages about network status insecurely across networks by default

Why would a Layer 2 switch need an IP address?

To enable the switch to be managed remotely

What is NOT considered a physical layer problem?

Wireless configuration

What is a result when the DHCP servers are not operational in a network?

Workstations are assigned with IP addresses in the 169.254.0.0/16 network

A network administrator is determining the best placement of VLAN trunk links. Which two types of point-to-point connections utilize VLAN trunking? (Choose two.) between two switches that utilize multiple VLANs between a switch and a client PC between a switch and a server that has an 802.1Q NIC between a switch and a network printer between two switches that share a common VLAN

between two switches that utilize multiple VLANs between a switch and a server that has an 802.1Q NIC

Which of the following terminates with BNC, N type and F type connectors?

coaxial