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NETACAD > FINAL > Flashcards

FINAL Flashcards

1
Q

A network administrator enters the service password-encryption command into the configuration mode of a router. What does this command accomplish?

A

This command prevents someone from viewing the running configuration passwords

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2
Q

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

A

default gateway

DNS server

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3
Q

HostA is attempting to contact ServerB. Which two statements correctly describe the addressing that HostA will generate in the process?

A

A frame with the destination MAC address of RouterA.

A packet with the destination IP address of ServerB.

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4
Q

What three primary functions does data link layer encapsulation provide?

A

addressing
error detection
frame delimiting

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5
Q

What is the function of CSMA/CA in a WLAN?

A

It provides the mechanism for media access.

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6
Q

What are two actions performed by a Cisco switch?

A

Using the source MAC addresses of frames to build and maintain a MAC address table
Utilizing the MAC address table to forward frames via the destination MAC address

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7
Q

What information is added during encapsulation at OSI Layer 3?

A

source and destination IP address

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8
Q

Which two statements are correct in a comparison of IPv4 and IPv6 packet headers?

A

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The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6.

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9
Q

Which two functions are primary functions of a router?

A

packet switching

path selection

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10
Q

A router boots and enters setup mode. What is the reason for this?

A

The configuration file is missing from NVRAM.

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11
Q

What will be the result of entering this configuration the next time a network administrator connects a console cable to the router and no additional commands have been entered?

A

The administrator will be presented with the R1> prompt.

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12
Q

Why are port numbers included in the TCP header of a segment?

A

to enable a receiving host to forward the data to the appropriate application

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13
Q

A PC that is communicating with a web server is utilizing a window size of 6,000 bytes when sending data and a packet size of 1,500 bytes. What byte of information will the web server acknowledge after it has received four packets of data from the PC?

A

6,001

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14
Q

Using VLSM, what is the largest and smallest subnet mask required on this network in order to minimize address waste? 500 25

A

255.255.254.0 and 255.255.255.252

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15
Q

A network administrator has been issued a network address of 192.31.7.64/26. How many subnets of equal size could be created from the assigned /26 network by using a /28 prefix?

A

4

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16
Q

small satellite office has been given the overall network number of 192.168.99.0/24 and the network technician can subdivide the network addresses as needed. The office needs network access for both wired and wireless devices. However, because of the security consideration, these two networks should be separate. The wired network will have 20 devices. The wireless network has a potential connection of 45 devices. Which addressing scheme would be most efficient for these two networks?

A
  1. 168.99.0/26

192. 168.99.64/27

17
Q

What are the three parts of an IPv6 global unicast address?

A

subnet ID
subnet mask
interface ID

18
Q

The administrator of a branch office receives an IPv6 prefix of 2001:db8:3000::/52 from the corporate network manager. How many subnets can the administrator create?

A

4096

19
Q

What three statements describe features or functions of media access control?

A

It is responsible for detecting transmission errors in transmitted data.
Data link layer protocols define the rules for access to different media.
Ethernet utilizes CSMA/CD.

20
Q

A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?

A

physical layer

21
Q

The ARP table in a switch maps which two types of address together?

A

Layer 3 address to a Layer 2 address

22
Q

Which devices should be secured to mitigate against MAC address spoofing attacks?

A

Layer 2

23
Q

Which router configuration mode would an administrator use to configure the router for SSH or Telnet login access?

A

line

24
Q

An administrator is testing connectivity to a remote device with the IP address 10.1.1.1. What does the output of this command indicate?

A

A router along the path did not have a route to the destination.

25
Q

Which is a function of the show ip route command when used as a tool for troubleshooting network connectivity?

A

shows the IP address of the next hop router for each route

26
Q

A user calls the help desk to report that a Windows XP workstation is unable to connect to the network after startup and that a popup window says “This connection has limited or no connectivity.” The technician asks the user to issue the ipconfig /all command. The user reports the IP address is 169.254.69.196 with subnet mask of 255.255.0.0 and nothing is displayed for the DNS server IP address. What is the cause of the problem?

A

The workstation is unable to obtain an IP address from a DHCP server.

27
Q

To revert to a previous configuration, an administrator issues the command copy tftp startup-config on a router and enters the host address and file name when prompted. After the command is completed, why does the current configuration remain unchanged?

A

The configuration should have been copied to the running configuration instead.

28
Q

What is the effect of setting the security mode to WEP on the Linksys integrated router?

A

It encrypts data between the wireless client and the access point.

29
Q

The minimum Ethernet frame size is bytes. Anything smaller than that should be considered a “runt frame.”

A 
MIN= 64
MAX= 1518`
30
Q

Which interface configuration mode command puts a Layer 3 switch interface into Layer 3 mode?

A

no switchport

31
Q

Diagram

A

[+] cables connecting rooms to wiring closets
[+] desktop PC in a classroom
[#] IP address of a server
[#] a switch located in a classroom

32
Q
  • not scored -
    192. 168.1.64/27
  • not scored -
    192. 168.1.32/27
    192. 168.1.96/27
A

Subnet 192.168.1.32/27 will have a valid host range from 192.168.1.33 - 192.168.1.62 with the broadcast address as 192.168.1.63
Subnet 192.168.1.64/27 will have a valid host range from 192.168.1.65 - 192.168.1.94 with the broadcast address as 192.168.1.95
Subnet 192.168.1.96/27 will have a valid host range from 192.168.1.97 - 192.168.1.126 with the broadcast address as 192.168.1.127

33
Q

physical damage to routers
brownouts
- not scored -
poor cabling of the network infrastructure

A

HARD WARE
ELECTRIC

MAINTAINENCE

34
Q

nslookup

A

10.20.20.3, non-authoritative answer

35
Q

hat is the secret keyword that is displayed on the web page?

A

packet

NETACAD (1 decks)

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