思科认证考试（ＣＣＮＡ）考试模拟题２０—３９及答案

    

29. [RINx] Given the IP address of 193.243.12.43 and a subnet mask of 255.255.255.128, what is the subnet address? 

a) 194.243.12.32 
b) 193.243.0.0 
c) 194.243.12.43 
d) 193.243.12.128 
e) None of the above. 

30. [CxNx] Cisco uses a naming convention to identify frame types. Which four of the following mappings are correct? 

Cisco_name = Common_name 
a) cisco_II = Ethernet_II 
b) arpa = Ethernet_II 
c) sap = Ethernet_802.3 
d) sap = Ethernet_802.2 LLC 
e) Novell Ether = Ethernet_802.2 LLC 
f) cisco_802 = Ethernet_802.2 LLC 
g) snap = Token Ring Snap 
h) snap = Ethernet_SNAP 

31. [RxNx] In order to communicate throughout an internetwork, which of the following are required. Choose Two. 

a) The use of a routable protocol such as NetBEUI or LAT 
b) A hierarchical naming scheme server such as DNS 
c) A host file at each communicating device 
d) A two part network addressing scheme such as Network/Host 
e) The use of a routable protocol such as IP or IPX 
f) The use of a routable protocol such as TCP or IPX 

32. [CxNx] What is the default route on an IP network? Choose one. 

a) This is the route that will be chosen first by IP for delivery of a datagram. 
b) The address of the nearest downstream neighbor in a Token ring network. 
c) At the router, it is the route used to direct frames for which the next hop has not been explicitly listed in the routing table. 
d) Any static route listing in a routing table. 
e) When all conditions are equal, the best route for delivery of IP datagrams. 

33. [CxNx] A caret symbol (^) inserted into a failed command indicates which of the following. Choose one. 

a) Numeric data is required for this command. 
b) The point in a command where you can simply press return to complete the syntax string. 
c) The point in a command where you have entered an incorrect command, keyword or argument. 
d) The point in a command where you must enter a required value. 
e) This is a normal indicator for any failed command. 

34. [RXNx] The metric used by IPX RIP is: 

a) hops 
b) ticks 
c) cost 
d) ticks and hops 
e) None of the above. 

35. [xINx] Which one of the following masks has the nickname of the "serial mask"? 

a) 255.255.255.192 
b) 255.255.255.224 
c) 255.255.255.240 
d) 255.255.255.248 
e) 255.255.255.252 

36. [SxNx] The following statement would deny traffic from what subnets? 

Router_B(config)#access-list 101 deny 

tcp 10.1.8.0 0.0.7.255 

192.16.5.0 0.0.0.255
a) 10.1.8.0 
b) 10.1.15.0 
c) 10.1.0.0 
d) 10.1.16.0 
e) choice a and b 

37. [SxNx] Name three reasons why VLAN s should be created. 

a) Moves, Adds and Changes are made simpler. 
b) There is less administrative overhead. 
c) The switch can route between VLANS. 
d) It limits broadcasts domains. 
e) The router can switch faster. 

38. [SxNx] The Catalyst 5000 uses which switching mode? 

a) Cut-through 
b) Store and forward 
c) Fast switching 
d) Choice a and b 
e) Choice a and c 

39. [OxNx] Which of the following layers defines data representation? 

a) Application Layer 7 
b) Presentation Layer 6 
c) Session Layer 5 
d) Transport Layer 4 
e) Network Layer 3 
f) Data Link Layer 2 
g) Physical Layer 1