300-101

Question 1

By default what percentage of link bandwidth will EIGRP use?

Answer 1

50%

Question 2

What is the default active timer on modern versions of EIGRP? older versions?

Answer 2

3 minutes / 1 minute

Question 3

With what does EIGRP seed its routing table before learning topology data from neighbors?

Answer 3

1) All routes on working interfaces with static neighbors defined.
2) All routes redistributed into this router

Question 4

What is the max size of the standard TCP window

Answer 4

65535 bytes

Question 5

What command enables TCP window scaling?

Answer 5

R1(config) # ip tcp window-size <0-1073741823> (bytes)

Question 6

What is TCP selective acknowledgement?

Answer 6

The ability of a recipient to indicate which segments were not received so that the entire window doesn’t need to be resent.

Question 7

What command enable TCP selective ACK

Answer 7

(config)# ip tcp selective-ack

Question 8

T/F TCP header compression can be used with TCP timestamps?

Answer 8

False. Header compression must be off to enable TCP timestamps.

Question 9

What features does PPP offer that HDLC does not?

Answer 9

authentication
error detection
error recovery

Question 10

What are the phases of a PPPoE session?

Answer 10

1) Active Discovery (client is looking for a server)

2) Session (auth and negotiation take place)

Question 11

What does the EIGRP network statement without a wildcard mask do?

Answer 11

Uses the default classful mask

Question 12

What is the default AD for an EIGRP summary route?

Answer 12

5

Question 13

How do you see the AD of an EIGRP summary route

Answer 13

sh ip route

Question 14

What types of routes will an EIGRP stub advertise?

Answer 14

connected and summary

Question 15

What command configures an EIGRP stub router?

Answer 15

(config-router)# eigrp stub [summary] [connected] [static] [redistributed]

Question 16

How do you make an EIGRP interface passive?

Answer 16

(config-router)# passive-interface

Question 17

How do you make EIGRP interfaces passive by default?

Answer 17

(config-router)# passive-interface default

Question 18

What are the EIGRP K-values?

Answer 18

K1 - Bandwidth (kbps)
K2- Load (ratio: 1-255)
K3 - Delay (10’s of microseconds)
K4 - Reliability (ratio: 0-255)

Question 19

What command changes the EIGRP K values?

Answer 19

(config-router)# metric weights

Question 20

What is the EIGRP bandwidth command for?

Answer 20

Limits the amount of bandwidth that EIGRP will use for itself.

Question 21

What is the default EIGRP bandwidth percentage? How do you change it?

Answer 21

1) 50%

2) (config-if)# ip bandwidth-percent eigrp

Question 22

What are two ways to distribute a default router in EIGRP?

Answer 22

1) Set a static and redistribute static

2) Use ip default-network

Question 23

What two things, must you do to use the ip default-network feature?

Answer 23

1) Advertise the network you want to be the default

2) use the ip default-network command to make it the default.

Question 24

How is a DR/BDR election performed?

Answer 24

1) All routers with a priority of 1 or greater are eligible to participate.
2) The router with the highest priority is elected DR.
3) In case of tie, the router with the highest RID wins.
4 ) Process repeats for a BDR.

Question 25

How is OSPF RID determined?

Answer 25

1) IP of loopback with highest IP address
2) If no loopback, IP of physical interface with highest IP.
Alternatively, can be set with router-id command.

Question 26

What is the default route type for OSPF route redistribution?

Answer 26

E2 (External type 2)

Question 27

What is the difference betwen OSPF E1 and E2 routes/

Answer 27

E1’S metric includes the cost from the local router to the desination.

E2’s metric only shows the cost from the ASBR to the destination

Question 28

What is the default metric type for an OSPF external router?

Answer 28

E2

Question 29

List the OSPF route selection order

Answer 29

1) Intra area routes
2) Inter area routes
3) E1
4) E2
5) N1
6) N2

Question 30

What are the two ways to summarize routes in OSPF?

Answer 30

1) On ABR (for inter area) do,
(config-router)# area range

2) On ASBR (for external routes) do,
(config-router)# summary-address