juniper认证考试
What is the purpose of a network mask?（）A、It is used in conjunction with the wildcard mask to determine the number of hosts on a networkB、It is used to define which parts of the IP address are allocated to host addresses and network prefixesC、It is used t
题目
What is the purpose of a network mask?（）
- A、It is used in conjunction with the wildcard mask to determine the number of hosts on a network
- B、It is used to define which parts of the IP address are allocated to host addresses and network prefixes
- C、It is used to hide subnets from external networks by masking the subnets with NAT
- D、It is used to differentiate a network as a classful network or a classless network
相似问题和答案
第1题：
A.15.234.118.63
B.83.121.178.93
C.134.178.18.56
D.192.168.19.37
E.201.45.116.159
F.217.63.12.192
第2题：
When a DHCP server is configured, which two IP addresses should never be assignable to hosts? （）
- A、network or subnetwork IP address
- B、broadcast address on the network
- C、IP address leased to the LAN
- D、IP address used by the interfaces
- E、manually assigned address to the clients
- F、designated IP address to the DHCP server
正确答案:A,B
第3题：
A. The summarized address for all internal subnetted addresses.
B. A private IP address assigned to a host on the inside network.
C. A registered address that represents an inside host to an outside network.
D. A unique IP address used on an internal network
E. Non of the above
第4题：
In any NAT (network address translation) configuration, what is the Inside Global IP address?（）
- A、The summarized address for all internal subnetted addresses.
- B、A private IP address assigned to a host on the inside network.
- C、A registered address that represents an inside host to an outside network.
- D、A unique IP address used on an internal network
- E、Non of the above
正确答案:C
第5题：
What is the purpose of a network mask?（）
- A、It is used to identify the maximum hop count of a subnetwork
- B、It is used to identify an IP address as either private or public
- C、It is used to identify the network to which an IP address belongs
- D、It is used to identify the total number of bits present in an IP address
正确答案:C
第6题：
An administrator must assign static IP addresses to the servers in a network.For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP propertied box for the sales server?（）
A. IP address:192.168.20.14 Subnet Mask:255.255.255.248 Default Gateway:192.168.20.9
B. IP address:192.168.20.254 Subnet Mask:255.255.255.0 Default Gateway:192.168.20.1
C. IP address:192.168.20.30 Subnet Mask:255.255.255.248 Default Gateway:192.168.20.25
D. IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.17
E. IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.25
第7题：
What are the "bound IP addresses" used for in LDP？（）
- A、For each such address and mask /32, one label binding is created.
- B、As the TCP endpoint, IP addresses are used by the LDP session.
- C、These addresses are used to find the label binding to put in the LFIB, by looking up these IP addresses in the routing table.
- D、These addresses are used for penultimate hop popping (PHP) when forwarding packets to the next router directly.
正确答案:C
第8题：
A./24
B./30
C./27
D./26
E./32
第9题：
In network that support VLSM, which network mask should be used for point-to-point WAN links in order to reduce waste of IP addresses?（）
- A、/24
- B、/30
- C、/27
- D、/26
- E、/32
正确答案:B
第10题：
When selecting a Network Interface Card (NIC), which of the following factors need to be considered?（）
- A、The type of application used on the network
- B、The type of system bus used by the computers
- C、The type of memory installed in each computer
- D、The type of media used in the network topology
- E、The type of protocols used in the network
- F、The physical layout of the network hosts
正确答案:B,D,F