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2016 Nov 400-101 ccie written exam price:

Q211. Which three options are three of the default EIGRP administrative distances? (Choose three.) 

A. Internal, 90 

B. External, 170 

C. Summary, 5 

D. Outside Local, 100 

E. Inside Local, 180 

F. Inside Global, 1 

Answer: A,B,C 


The following table lists the default administrative distances for various routing protocols used on Cisco routers. 

Routing Protocol 

Administrative distance 

Directly connected interface 

Static route out an interface 

Static route to next-hop address 

DMNR - Dynamic Mobile Network Routing 

EIGRP summary route 

External BGP 


Internal EIGRP 








Routing Information Protocol (RIP) 


Exterior Gateway Protocol (EGP) 


On Demand Routing (ODR) 


External EIGRP 


Internal BGP 


Floating Static Route (ex. DHCP-learned) 






Drag and drop the extended ping command field on the left to its usage on the right. 


Q213. Which two options are ways in which an OSPFv3 router handles hello packets with a clear address-family bit? (Choose two.) 

A. IPv4 unicast packets are discarded. 

B. IPv6 unicast packets are discarded. 

C. IPv4 unicast packets are forwarded. 

D. IPv6 unicast packets are forwarded. 

Answer: A,D 


A typical distance vector protocol saves the following information when computing the best path to a destination: the distance (total metric or distance, such as hop count) and the vector (the next hop). For instance, all the routers in the network in Figure 1 are running Routing Information Protocol (RIP). Router Two chooses the path to Network A by examining the hop count through each available path. 

Since the path through Router Three is three hops, and the path through Router One is two hops, Router Two chooses the path through One and discards the information it learned through Three. If the path between Router One and Network A goes down, Router Two loses all connectivity with this destination until it times out the route of its routing table (three update periods, or 90 seconds), and Router Three re-advertises the route (which occurs every 30 seconds in RIP). Not including any hold-down time, it will take between 90 and 120 seconds for Router Two to switch the path from Router One to Router Three. EIGRP, instead of counting on full periodic updates to re-converge, builds a topology table from each of its neighbor's advertisements (rather than discarding the data), and converges by either looking for a likely loop-free route in the topology table, or, if it knows of no other route, by querying its neighbors. Router Two saves the information it received from both Routers One and Three. It chooses the path through One as its best path (the successor) and the path through Three as a loop-free path (a feasible successor). When the path through Router One becomes unavailable, Router Two examines its topology table and, finding a feasible successor, begins using the path through Three immediately. 


Q214. Which OSPF feature supports LSA rate limiting in milliseconds to provide faster convergence? 

A. LSA throttling 

B. incremental SPF 

C. fast hello 

D. SPF tuning 



The OSPF Link-State Advertisement (LSA) Throttling feature provides a dynamic mechanism to slow down link-state advertisement (LSA) updates in OSPF during times of network instability. It also allows faster Open Shortest Path First (OSPF) convergence by providing LSA rate limiting in milliseconds. 


Q215. Refer to the exhibit. 

Which statement about the R1 configuration is true? 

A. It permits host to establish a Telnet connection to R1. 

B. It limits remote hosts to two SSH connection attempts. 

C. SSH connections to R1 will log out after a 5-minute idle interval. 

D. Hosts that reside on network can SSH to R1. 

E. The R1 timeout for outgoing SSH connection attempts is 30 seconds. 



The timeout for outgoing SSH connection is defined by the “ip sshh time-out” command (in seconds), which is configured here as 30. 

Update 400-101 ccie written passing score:

Q216. Which two statements about Layer 2 Frame Prioritization bits are true? (Choose two.) 

A. 802.1Q frame headers carry the CoS value in the three most-significant bits of the 2-byte Tag Control Information field. 

B. ISL frame headers carry an IEEE 802.1P CoS value in the three least-significant bits of the 2-byte User field. 

C. ISL frame headers carry an IEEE 802.1P CoS value in the three most-significant bits of the 1-byte User field. 

D. On 802.1Q trunks, traffic in the native VLAN is carried in 802.1Q frames. 

E. Only 802.1Q and ISL frame types can carry CoS information. 

F. On 802.1Q trunks, traffic in the native VLAN is carried in 802.1P frames. 

Answer: A,E 

Q217. Refer to the exhibit. 

Which two possible network conditions can you infer from this configuration? (Choose two.) 

A. The authentication parameters on R1 and R2 are mismatched. 

B. R1 is using the default NTP source configuration. 

C. R1 and R2 have established an NTP session. 

D. R2 is configured as the NTP master with a stratum of 7. 

Answer: A,B 


Answer A. The NTP associations are not synced, it is only listed as a candidate because it was configured. Routing is not the issue, so it must be mismatched authentication parameters. 

Answer B. NTP sets the source IP address for all NTP packets based on the address of the interface through which the NTP packets are sent. You can configure NTP to use a specific source IP address. 

Q218. Which three parameters must match to establish OSPF neighbor adjacency? (Choose three.) 

A. the process ID 

B. the hello interval 

C. the subnet mask 

D. authentication 

E. the router ID 

F. the OSPF interface priority 

Answer: B,C,D 

Q219. Which trunking configuration between two Cisco switches can cause a security risk? 

A. configuring different native VLANs on the switches 

B. configuring different trunk modes on the switches 

C. configuring mismatched VLANs on the trunk 

D. disabling DTP on the trunk ports 

E. configuring incorrect channel-groups on the switches 


Q220. Which flag in a configuration BPDU instructs all switches to shorten their bridge table aging process from the default 300 seconds to the current forward delay value? 

A. topology change bit 

B. topology change acknowledgment bit 

C. priority bit 

D. max-age bit 



The Root Bridge continues to set the Topology Change flag (TCN bit) in all Configuration BPDUs that it sends out for a total of Forward Delay + Max Age seconds (default = 35 (20+15) seconds). This flag instructs all bridges to shorten their MAC address table (Bridge table) aging process from the default value of 300 seconds to the current Forward Delay value of the bridge (default=15 seconds). The TCA flag is set by the upstream bridge to tell the downstream bridges to stop sending TCN BPDUs. The TC flag is set in configuration BPDU by the Root Bridge to shorten the bridge table age-out period from default 300 seconds to Forward Delay seconds.