Deck 1

Question 1

means that out of all routes in a routing table, the router should choose the one that has the longest… and at the same time this… matches the… of the destination IP address.

Answer 1

prefix match

Question 2

leaf switches connect endpoint devices, ….connect leaves

Answer 2

spines

Question 3

what command creates an ipv6 address?

Answer 3

ipv6 address autoconfig

Question 4

What IPV6 multicast groups are joined when config’ing an inteface with IPV6?

Answer 4

FF02::1 and FF02::2

Question 5

What address range(s) can be used to communicate WITHOUT internet connectivity?

Answer 5

Private ranges

Question 6

IPV6 multicast uses what address block? IPV6 link local (subnet) uses what?

Answer 6

FF00::/8, FE80::/10 (w/64 bit int identifier)

Question 7

Define late collision? How do they occur?

Answer 7

-happens after first 512 bits/64 bytes of frame transmission
-duplex mismatch or cable too long

Question 8

POE power classification override, what happens?

Answer 8

-port is shutdown and err-disabled because max admin value exceeded

Question 9

frame flooding. What happens? How different from broadcast?

Answer 9

Frames are sent to all ports on switch in same vlan except ORIGINAL port

Difference is broadcast destination make is an FF address, whereas frame flooding destination is the ACTUAL MAC address

Question 10

Auto configures IPV6 address on an int derived from a MAC. Doesn’t need DHCP

Answer 10

SLAAC

Question 11

Features of FIBER?

Answer 11

-Glass core encased in cladding
-light goes thru core of fiber

Question 12

How does CAPWAP communicate between access point in local mode and a WLC?

Answer 12

link thru switch, assuming connection to the WLC

Question 13

link local, global unicast, and unique local are all UNICAST types

FF00::/12 is what kind of address?
2000::/3?
FC00::/7 and FD00::/8?
FE80::/10?

Answer 13

-IPV6 multicast
-global unicast
-unique local\
-link-local (similar to APIPA in IPV4)

Question 14

IPV4 unicast address range?

Answer 14

0.0.0.0-223.255.255.255

Question 15

…….: from one source to one destination i.e. One-to-One
……..: from one source to all possible destinations i.e. One-to-All
……: from one source to multiple destinations stating an interest in receiving the traffic i.e. One-to-Many

Answer 15

unicast, broadcast, multicast

Question 16

Equivalent to IPV4 public addresses

Answer 16

IPV6 global unicast

Question 17

320 ppl, one subnet, address range 192.168.0.0

What will subnet mask be?

Answer 17

/23 (use the power of 2. 2 to the 9th= 512. 512 is CLOSEST number to 320 that is also LARGER than 320)

Question 18

Frames under 64 bytes are called

Also what is CRC?

Answer 18

runts.

CRC detects accidental data changes for integrity purposes

Question 19

Imagine a router with the following routing table:

192.168.0.0/16 via Next_Hop_X
192.168.10.0/24 via Next_Hop_Y
192.168.10.64/26 via Next_Hop_Z
0.0.0.0/0 (default route) via Next_Hop_W

Now, if a packet comes in with the destination IP address 192.168.10.70, which next hop would the router choose based on its routing table?

Answer 19

192.168.10.64/26 via Next_Hop_Z

Question 20

TCP uses checksums, retransmissions, and…

UDP uses checksums only

Answer 20

ACK

Question 21

enabling this can move traffic from a congested 2.4 to a less congested 5

Answer 21

band select

Question 22

refers to the ability of a network system, particularly wireless networks, to apply specific attributes dynamically to individual clients or users based on the results of the AAA (Authentication, Authorization, and Accounting) process.

Answer 22

AAA override

Question 23

SMTP SSH FTP are TCP or UDP?

VOIP TFTP SNMP?

Answer 23

-TCP

-UDP

Question 24

Two router interfaces cannot be in the…

Answer 24

same network

Question 25

Break it down: ip route 172.16.3.0 255.255.255.0 192.168.2.4

Answer 25

-static route for 172.16.3.0 created
-192.168.x.x is NEXT HOP
-default admin distance is used because no other is specified. 1 by default. If you see number at end, it’s a admin distance being set. Lowest admin distance is preferable to others.

Question 26

Private IPs less costly than public ones. True?

Answer 26

Yeah

Question 27

Benefits of private IPs?

Answer 27

-conserve IPV4 addresses because ALL devices NAT’d on internet to appear as though from one IP

Question 28

Best WAN technology for a SOHO?

Why is frame relay and PPP leased line not?

Answer 28

-broadband cable?
-frame relay is old
-leased line is expensive and better for large corporations

Question 29

Best WAN architectures for a for scalability/redundancy

Answer 29

-Dual homed branches (home branch has two providers/connections)
-dynamic routing

Question 30

Binary patterns for the following:

-unique local
-global unicast
-multicast
-link local

Answer 30

-11111110
-001
-11111111
-1111111010

Question 31

SFP modules convert fiber to ethernet and vice versa. They are also…

Answer 31

hot swappable

Question 32

Combine core and distribution layers. What is this called and what does it enforce?

Answer 32

-collapsed core
-security policies

Question 33

In a three tier network, core layer does what two things?

Answer 33

-ensure uninterrupted forward service
-timely data transfer between layers

Question 34

DTE receives clock signal. Who sets/sends clock signal?

Answer 34

DCE

Question 35

Management Plane protocols?

Answer 35

telnet, ssh, snmp, syslog