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20 Cards in this Set
- Front
- Back
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What is subnet mask 10.2.1.3/22? |
255.255.252.0 |
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What is the administrative distance of EIGRP, eBGP, iBGP |
EIGRP is 90. EBGP is 20. IBGP is 200 |
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What is your favorite routing protocol. |
EIGRP |
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In EIGRP , what is a stuck in active route ? |
SIA messages are received when there is no reply to queries to locate a missing route or if there is no other feasible route in place. |
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In ospf, what is a totally stubby area? What does area zero do? |
Ospf stubby area is a standalone network. Ospf area 0 is the backbone area of a network , particularly in regards to WAN network. |
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Which internal routing protocol would use if you needed to route between Cisco and non Cisco equipment ? |
Any open standard dynamic routing protocol can be used to connect Cisco devices with non Cisco devices , however , this will require some configuration changes on Cisco devices. |
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Explain what a 3 what handshake is in TCP? |
HOST send sync message , server receives sync messages , server sends sync acknowledgement message , host receives SYN acknowledgement, host sends acknowledgement message , server receives acknowledgement, tcp/ip connection is now established |
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What is vlan trunking protocol ? |
Vtp is a protocol that carries vlan information to all switches in the network specifically within the same Vtp domain. And also speeds up layer 2 convergence because changes are handled appropriately and timely. |
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What is difference between 802.1q and ISL? |
ISL and 802.1q are essentially synonyms in most circumstances. ISL is cisco specific , 802.1q is a IEEE open standard. |
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Explain ether-channel ? |
Ether-channel is a medium which increases network performances on layer 2 by increasing bandwidth for users and servers. Can group together 2-8 fast or gig ports. |
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What do you need to setup a vtp domain? |
Elect the vtp domain server switch, regulate domain names on all switches services vlans. |
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What is spanning tree used for ? |
To prevent layer 2 loops |
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What is a root bridge and why you need one ? |
Root bridge is elected in a process multicast on the network. This root bridge is what actually prevents loops as it gives all switches a place to return to get where it sending information. Regulates traffic flow on layer 2. |
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What is needed on a router interface to allow DHCP to function on a subnet ? |
Ip helper address on subnet gateway. Tells the router where it is getting its address from. |
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Describe what a statefull firewall is ? |
Statefull inspection for wall checks the session flow of the connections. |
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What is HSRP, is this an open standard? |
Hot standby routing protocol is for virtual fail-over , allocates another way for traffic to get out of its network if the first hop fails. |
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In a PIX/ASA , what are security levels used for ? |
Security levels vary between 0-100 and 0 is the most unsecured and 100 the most secure network. If you use the default rules in the zones , traffic is permitted from more secure zones/IF to less secure zones. |
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What two things are needed in a PIX/ASA firewall to allow traffic to pass from a higher security level to lower security level ? |
ASA/PIX (config)# same-security-traffic permit [intra, inter] interface. Also need to configure acl to specify traffic flow between ports with mismatched security levels. |
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In IPSec VPNs , what is diffie hellman? What is it used for? |
Diffie hellman is algorithm used to for creation of encrypted public /private keys. |
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In an IPSec tunnel, what is main mode? |
Main mode is the quicker alternative for aggressive mode. When establishing the management connection in a IPSec tunnel phase 1 |
